diff --git a/experiments/tutorial/go.mod b/experiments/tutorial/go.mod
new file mode 100644
index 0000000..ca5df39
--- /dev/null
+++ b/experiments/tutorial/go.mod
@@ -0,0 +1,5 @@
+module tutorial
+
+go 1.25.0
+
+require github.com/google/uuid v1.6.0
diff --git a/experiments/tutorial/go.sum b/experiments/tutorial/go.sum
new file mode 100644
index 0000000..7790d7c
--- /dev/null
+++ b/experiments/tutorial/go.sum
@@ -0,0 +1,2 @@
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
diff --git a/experiments/tutorial/main.go b/experiments/tutorial/main.go
new file mode 100644
index 0000000..c9b9ae8
--- /dev/null
+++ b/experiments/tutorial/main.go
@@ -0,0 +1,720 @@
+// ============================================
+// main.go - Tutorial Server
+// ============================================
+package main
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"html/template"
+	"log"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/google/uuid"
+)
+
+// ============================================
+// Data Structures
+// ============================================
+
+type StudentState struct {
+	ID                 string
+	CurrentNode        string
+	NodesVisited       []string
+	QuizScores         map[string]int
+	Attempts           map[string]int
+	MasteryScore       int
+	StartTime          time.Time
+	LastActivity       time.Time
+	CompletedExercises map[string]bool
+}
+
+type QuizOption struct {
+	ID   string
+	Text string
+}
+
+type NodeData struct {
+	*StudentState
+	QuizOptions     []QuizOption
+	ShowHint        bool
+	ProgressPercent int
+	NodesCompleted  int
+	TotalNodes      int
+	WantsMoreDetail bool
+	Explanation     string
+	NextNode        string
+	Hint            string
+	Topic           string
+	StartingCode    string
+	Instructions    string
+	ExerciseID      string
+	Title           string
+}
+
+type TutorialServer struct {
+	templates *template.Template
+	sessions  map[string]*StudentState
+}
+
+// ============================================
+// Template Functions
+// ============================================
+
+var funcMap = template.FuncMap{
+	"add": func(a, b int) int { return a + b },
+	"ge":  func(a, b int) bool { return a >= b },
+	"gt":  func(a, b int) bool { return a > b },
+	"lt":  func(a, b int) bool { return a < b },
+}
+
+// ============================================
+// Server Setup
+// ============================================
+
+func NewTutorialServer() *TutorialServer {
+	// Load templates from file
+	tmpl, err := template.New("").Funcs(funcMap).ParseFiles("templates/tutorial.html")
+	if err != nil {
+		log.Fatalf("Error loading templates: %v", err)
+	}
+
+	return &TutorialServer{
+		templates: tmpl,
+		sessions:  make(map[string]*StudentState),
+	}
+}
+
+// ============================================
+// Simple Router (supports "VERB /path/{param}" specs)
+// ============================================
+
+type routeSpec struct {
+	method  string
+	pattern string
+	handler http.HandlerFunc
+}
+
+type SimpleRouter struct {
+	routes []routeSpec
+}
+
+type ctxKey string
+
+var routeParamsKey ctxKey = "routeParams"
+
+func NewSimpleRouter() *SimpleRouter {
+	return &SimpleRouter{
+		routes: []routeSpec{},
+	}
+}
+
+// Register a route using a string like "GET /node/{nodeID}"
+func (sr *SimpleRouter) HandleFunc(spec string, h http.HandlerFunc) {
+	parts := strings.SplitN(spec, " ", 2)
+	if len(parts) != 2 {
+		log.Fatalf("invalid route spec: %s", spec)
+	}
+	method := strings.ToUpper(strings.TrimSpace(parts[0]))
+	pattern := strings.TrimSpace(parts[1])
+	sr.routes = append(sr.routes, routeSpec{method: method, pattern: pattern, handler: h})
+}
+
+func (sr *SimpleRouter) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	path := r.URL.Path
+	method := r.Method
+
+	for _, rt := range sr.routes {
+		if rt.method != method {
+			continue
+		}
+		ok, params := matchPattern(rt.pattern, path)
+		if ok {
+			ctx := context.WithValue(r.Context(), routeParamsKey, params)
+			rt.handler.ServeHTTP(w, r.WithContext(ctx))
+			return
+		}
+	}
+
+	// If no route matched, return 404
+	log.Printf("No route matched for %s %s", method, path)
+	http.NotFound(w, r)
+}
+
+// Match a pattern like "/node/{nodeID}" against a path and return params
+func matchPattern(pattern, path string) (bool, map[string]string) {
+	pattern = strings.TrimSuffix(pattern, "/")
+	path = strings.TrimSuffix(path, "/")
+
+	pSeg := strings.Split(pattern, "/")
+	qSeg := strings.Split(path, "/")
+
+	// Special-case root
+	if len(pSeg) == 1 && pSeg[0] == "" {
+		if path == "" || path == "/" {
+			return true, map[string]string{}
+		}
+	}
+
+	if len(pSeg) != len(qSeg) {
+		return false, nil
+	}
+
+	params := map[string]string{}
+	for i := 0; i < len(pSeg); i++ {
+		p := pSeg[i]
+		q := qSeg[i]
+		if p == "" && q == "" {
+			continue
+		}
+		if strings.HasPrefix(p, "{") && strings.HasSuffix(p, "}") {
+			name := strings.TrimSuffix(strings.TrimPrefix(p, "{"), "}")
+			params[name] = q
+			continue
+		}
+		if p != q {
+			return false, nil
+		}
+	}
+	return true, params
+}
+
+// Helper to retrieve a route parameter from request context
+func routeVar(r *http.Request, name string) string {
+	v := r.Context().Value(routeParamsKey)
+	if v == nil {
+		return ""
+	}
+	if m, ok := v.(map[string]string); ok {
+		return m[name]
+	}
+	return ""
+}
+
+// Simple logging middleware to help debug requests
+func loggingMiddleware(next http.Handler) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		log.Printf("--> %s %s cookies=%v", r.Method, r.URL.Path, r.Cookies())
+		next.ServeHTTP(w, r)
+		log.Printf("<-- %s %s", r.Method, r.URL.Path)
+	})
+}
+
+// ============================================
+// Session Management
+// ============================================
+
+func (s *TutorialServer) getOrCreateState(sessionID string) *StudentState {
+	if state, exists := s.sessions[sessionID]; exists {
+		state.LastActivity = time.Now()
+		return state
+	}
+
+	state := &StudentState{
+		ID:                 sessionID,
+		CurrentNode:        "intro",
+		NodesVisited:       []string{},
+		QuizScores:         make(map[string]int),
+		Attempts:           make(map[string]int),
+		CompletedExercises: make(map[string]bool),
+		MasteryScore:       0,
+		StartTime:          time.Now(),
+		LastActivity:       time.Now(),
+	}
+
+	s.sessions[sessionID] = state
+	return state
+}
+
+func getSessionID(r *http.Request) string {
+	cookie, err := r.Cookie("session_id")
+	if err != nil {
+		return ""
+	}
+	return cookie.Value
+}
+
+func setSessionID(w http.ResponseWriter) string {
+	sessionID := uuid.New().String()
+	http.SetCookie(w, &http.Cookie{
+		Name:     "session_id",
+		Value:    sessionID,
+		Path:     "/",
+		MaxAge:   86400 * 7, // 7 days
+		HttpOnly: true,
+	})
+	return sessionID
+}
+
+// ============================================
+// HTTP Handlers
+// ============================================
+
+func (s *TutorialServer) HandleIndex(w http.ResponseWriter, r *http.Request) {
+	sessionID := getSessionID(r)
+	if sessionID == "" {
+		sessionID = setSessionID(w)
+	}
+
+	state := s.getOrCreateState(sessionID)
+
+	data := NodeData{
+		StudentState: state,
+		TotalNodes:   15, // Total nodes in our tutorial
+	}
+
+	var buf bytes.Buffer
+	if err := s.templates.ExecuteTemplate(&buf, "main-page", data); err != nil {
+		log.Printf("Template error: %v", err)
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	// normalize attribute names for datastar rc6 compatibility
+	out := normalizeDataOnAttrs(buf.String())
+
+	w.Header().Set("Content-Type", "text/html")
+	w.Write([]byte(out))
+}
+
+func (s *TutorialServer) RenderNode(w http.ResponseWriter, r *http.Request) {
+	nodeID := routeVar(r, "nodeID")
+	if nodeID == "" {
+		http.Error(w, "No nodeID", http.StatusBadRequest)
+		return
+	}
+
+	// Ensure there is a session cookie; create one if missing
+	sessionID := getSessionID(r)
+	if sessionID == "" {
+		sessionID = setSessionID(w)
+	}
+
+	state := s.getOrCreateState(sessionID)
+
+	// Track visit
+	if !contains(state.NodesVisited, nodeID) {
+		state.NodesVisited = append(state.NodesVisited, nodeID)
+	}
+	state.CurrentNode = nodeID
+
+	data := s.prepareNodeData(nodeID, state)
+
+	var buf bytes.Buffer
+	if err := s.templates.ExecuteTemplate(&buf, nodeID, data); err != nil {
+		log.Printf("Template error for node %s: %v", nodeID, err)
+		http.Error(w, fmt.Sprintf("Template error: %v", err), http.StatusInternalServerError)
+		return
+	}
+
+	// If the client expects SSE (Datastar) send event-stream; otherwise return raw HTML
+	accept := r.Header.Get("Accept")
+	fragment := normalizeDataOnAttrs(buf.String())
+	if strings.Contains(accept, "text/event-stream") {
+		// Send as SSE for Datastar
+		w.Header().Set("Content-Type", "text/event-stream")
+		w.Header().Set("Cache-Control", "no-cache")
+		w.Header().Set("Connection", "keep-alive")
+
+		fmt.Fprintf(w, "event: datastar-fragment\n")
+		fmt.Fprintf(w, "data: selector #content\n")
+		fmt.Fprintf(w, "data: merge morph\n")
+		fmt.Fprintf(w, "data: fragment %s\n\n", fragment)
+
+		if flusher, ok := w.(http.Flusher); ok {
+			flusher.Flush()
+		}
+		return
+	}
+
+	// Fallback: return the fragment HTML directly so simple fetch() clients can replace #content
+	w.Header().Set("Content-Type", "text/html; charset=utf-8")
+	w.WriteHeader(http.StatusOK)
+	w.Write([]byte(fragment))
+}
+
+func (s *TutorialServer) HandleAnswer(w http.ResponseWriter, r *http.Request) {
+	var answer struct {
+		Quiz   string `json:"quiz"`
+		Answer string `json:"answer"`
+	}
+
+	if err := json.NewDecoder(r.Body).Decode(&answer); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	// Ensure session exists (create cookie if needed)
+	sessionID := getSessionID(r)
+	if sessionID == "" {
+		sessionID = setSessionID(w)
+	}
+	state := s.getOrCreateState(sessionID)
+
+	state.Attempts[answer.Quiz]++
+	isCorrect := s.validateAnswer(answer.Quiz, answer.Answer)
+
+	w.Header().Set("Content-Type", "text/event-stream")
+	w.Header().Set("Cache-Control", "no-cache")
+	w.Header().Set("Connection", "keep-alive")
+
+	var buf bytes.Buffer
+
+	if isCorrect {
+		state.QuizScores[answer.Quiz] = 100
+		state.MasteryScore = s.calculateMastery(state)
+
+		nextNode := s.getNextNode(answer.Quiz, state)
+
+		data := NodeData{
+			StudentState: state,
+			Explanation:  s.getExplanation(answer.Quiz),
+			NextNode:     nextNode,
+		}
+
+		s.templates.ExecuteTemplate(&buf, "correct-answer", data)
+	} else {
+		data := NodeData{
+			StudentState: state,
+			Hint:         s.getHint(answer.Quiz, state.Attempts[answer.Quiz]),
+			ShowHint:     state.Attempts[answer.Quiz] > 1,
+			Topic:        s.getTopicFromQuiz(answer.Quiz),
+		}
+
+		s.templates.ExecuteTemplate(&buf, "wrong-answer", data)
+	}
+
+	fragment := normalizeDataOnAttrs(buf.String())
+
+	fmt.Fprintf(w, "event: datastar-fragment\n")
+	fmt.Fprintf(w, "data: selector #quiz-feedback\n")
+	fmt.Fprintf(w, "data: merge morph\n")
+	fmt.Fprintf(w, "data: fragment %s\n\n", fragment)
+
+	// Update progress
+	progress := (len(state.NodesVisited) * 100) / 15
+	fmt.Fprintf(w, "event: datastar-signal\n")
+	fmt.Fprintf(w, "data: {\"progress\": %d, \"mastery\": %d}\n\n", progress, state.MasteryScore)
+
+	if flusher, ok := w.(http.Flusher); ok {
+		flusher.Flush()
+	}
+}
+
+func (s *TutorialServer) HandleCodeCheck(w http.ResponseWriter, r *http.Request) {
+	var submission struct {
+		ExerciseID string `json:"exerciseId"`
+		Code       string `json:"code"`
+	}
+
+	if err := json.NewDecoder(r.Body).Decode(&submission); err != nil {
+		http.Error(w, err.Error(), http.StatusBadRequest)
+		return
+	}
+
+	// Ensure session exists (create cookie if needed)
+	sessionID := getSessionID(r)
+	if sessionID == "" {
+		sessionID = setSessionID(w)
+	}
+	state := s.getOrCreateState(sessionID)
+
+	result := s.validateCode(submission.ExerciseID, submission.Code)
+
+	w.Header().Set("Content-Type", "text/event-stream")
+	w.Header().Set("Cache-Control", "no-cache")
+
+	var buf bytes.Buffer
+
+	if result.Passed {
+		state.CompletedExercises[submission.ExerciseID] = true
+		state.MasteryScore += 10
+
+		feedback := fmt.Sprintf(`
+			<div class="feedback success">
+				✅ Excellent! Your code works correctly.
+				<div class="output"><pre>%s</pre></div>
+				<button data-on:click="$$get('/node/%s')" class="btn-primary">
+					Continue to Next Lesson →
+				</button>
+			</div>
+		`, result.Output, result.NextNode)
+
+		buf.WriteString(feedback)
+	} else {
+		feedback := fmt.Sprintf(`
+			<div class="feedback error">
+				❌ Not quite right. %s
+				<button data-on:click="$$get('/node/hint-%s')" class="btn-secondary">
+					Get a Hint 💡
+				</button>
+			</div>
+		`, result.Error, submission.ExerciseID)
+
+		buf.WriteString(feedback)
+	}
+
+	fragment := normalizeDataOnAttrs(buf.String())
+
+	fmt.Fprintf(w, "event: datastar-fragment\n")
+	fmt.Fprintf(w, "data: selector #exercise-feedback\n")
+	fmt.Fprintf(w, "data: merge morph\n")
+	fmt.Fprintf(w, "data: fragment %s\n\n", fragment)
+
+	if flusher, ok := w.(http.Flusher); ok {
+		flusher.Flush()
+	}
+}
+
+// ============================================
+// Business Logic
+// ============================================
+
+func (s *TutorialServer) prepareNodeData(nodeID string, state *StudentState) NodeData {
+	data := NodeData{
+		StudentState:    state,
+		QuizOptions:     s.getQuizOptions(nodeID),
+		ProgressPercent: (len(state.NodesVisited) * 100) / 15,
+		NodesCompleted:  len(state.NodesVisited),
+		TotalNodes:      15,
+		WantsMoreDetail: len(state.NodesVisited) > 5,
+		ShowHint:        state.Attempts[nodeID] > 1,
+	}
+
+	// Set exercise-specific data
+	switch nodeID {
+	case "exercise-first-tag":
+		data.StartingCode = "<html>\n  <body>\n    \n  </body>\n</html>"
+		data.Instructions = "Add an <h1> tag with the text 'Hello World' inside the body."
+		data.ExerciseID = "first-tag"
+		data.Title = "Your First HTML Tag"
+	case "exercise-paragraph":
+		data.StartingCode = "<html>\n  <body>\n    <h1>My Page</h1>\n    \n  </body>\n</html>"
+		data.Instructions = "Add a <p> tag with any text you like below the h1."
+		data.ExerciseID = "paragraph"
+		data.Title = "Adding a Paragraph"
+	}
+
+	return data
+}
+
+func (s *TutorialServer) getQuizOptions(nodeID string) []QuizOption {
+	quizzes := map[string][]QuizOption{
+		"quiz-what-is-html": {
+			{ID: "a", Text: "HyperText Markup Language"},
+			{ID: "b", Text: "High Technology Modern Language"},
+			{ID: "c", Text: "Home Tool Markup Language"},
+			{ID: "d", Text: "HyperText Modern Language"},
+		},
+		"quiz-html-tags": {
+			{ID: "a", Text: "<paragraph>"},
+			{ID: "b", Text: "<p>"},
+			{ID: "c", Text: "<text>"},
+			{ID: "d", Text: "<para>"},
+		},
+	}
+
+	return quizzes[nodeID]
+}
+
+func (s *TutorialServer) validateAnswer(quiz, answer string) bool {
+	correctAnswers := map[string]string{
+		"quiz-what-is-html": "a",
+		"quiz-html-tags":    "b",
+	}
+
+	return correctAnswers[quiz] == answer
+}
+
+func (s *TutorialServer) getExplanation(quiz string) string {
+	explanations := map[string]string{
+		"quiz-what-is-html": "HTML stands for HyperText Markup Language. It's the standard language for creating web pages!",
+		"quiz-html-tags":    "The <p> tag creates a paragraph. The 'p' stands for paragraph!",
+	}
+
+	return explanations[quiz]
+}
+
+func (s *TutorialServer) getHint(quiz string, attempts int) string {
+	hints := map[string][]string{
+		"quiz-what-is-html": {
+			"Think about what HTML stands for...",
+			"The 'HT' in HTML stands for HyperText",
+		},
+		"quiz-html-tags": {
+			"Think about the first letter of 'paragraph'",
+			"Paragraph tags are very short - just one letter!",
+		},
+	}
+
+	hintList := hints[quiz]
+	if attempts-1 < len(hintList) {
+		return hintList[attempts-1]
+	}
+	return hintList[len(hintList)-1]
+}
+
+func (s *TutorialServer) getNextNode(quiz string, state *StudentState) string {
+	nextNodes := map[string]string{
+		"quiz-what-is-html": "html-structure",
+		"quiz-html-tags":    "exercise-first-tag",
+	}
+
+	// Could add logic based on mastery score
+	if state.MasteryScore > 80 {
+		// Fast track for high performers
+		if quiz == "quiz-html-tags" {
+			return "advanced-tags"
+		}
+	}
+
+	return nextNodes[quiz]
+}
+
+func (s *TutorialServer) getTopicFromQuiz(quiz string) string {
+	topics := map[string]string{
+		"quiz-what-is-html": "HTML Basics",
+		"quiz-html-tags":    "HTML Tags",
+	}
+	return topics[quiz]
+}
+
+func (s *TutorialServer) calculateMastery(state *StudentState) int {
+	if len(state.QuizScores) == 0 {
+		return 0
+	}
+
+	total := 0
+	for _, score := range state.QuizScores {
+		total += score
+	}
+
+	mastery := total / len(state.QuizScores)
+
+	// Bonus for completed exercises
+	mastery += len(state.CompletedExercises) * 5
+
+	if mastery > 100 {
+		mastery = 100
+	}
+
+	return mastery
+}
+
+type CodeResult struct {
+	Passed   bool
+	Output   string
+	Error    string
+	NextNode string
+}
+
+func (s *TutorialServer) validateCode(exerciseID, code string) CodeResult {
+	code = strings.TrimSpace(code)
+
+	switch exerciseID {
+	case "first-tag":
+		if strings.Contains(code, "<h1>") && strings.Contains(code, "Hello World") && strings.Contains(code, "</h1>") {
+			return CodeResult{
+				Passed:   true,
+				Output:   "Your page would display:\n\nHello World\n(as a large heading)",
+				NextNode: "html-attributes",
+			}
+		}
+		return CodeResult{
+			Passed: false,
+			Error:  "Make sure you have an <h1> tag with 'Hello World' inside it, and don't forget the closing </h1> tag!",
+		}
+
+	case "paragraph":
+		if strings.Contains(code, "<p>") && strings.Contains(code, "</p>") {
+			return CodeResult{
+				Passed:   true,
+				Output:   "Perfect! Your page now has both a heading and a paragraph.",
+				NextNode: "quiz-html-tags",
+			}
+		}
+		return CodeResult{
+			Passed: false,
+			Error:  "You need to add a <p> tag with some text, and close it with </p>",
+		}
+	}
+
+	return CodeResult{
+		Passed: false,
+		Error:  "Unknown exercise",
+	}
+}
+
+// ============================================
+// Utilities
+// ============================================
+
+func contains(slice []string, item string) bool {
+	for _, s := range slice {
+		if s == item {
+			return true
+		}
+	}
+	return false
+}
+
+// ============================================
+// Main
+// ============================================
+
+func main() {
+	server := NewTutorialServer()
+
+	r := NewSimpleRouter()
+
+	// Use route specs like "GET /", "GET /node/{nodeID}", "POST /answer", etc.
+	r.HandleFunc("GET /", server.HandleIndex)
+	r.HandleFunc("GET /node/{nodeID}", server.RenderNode)
+	r.HandleFunc("POST /answer", server.HandleAnswer)
+	r.HandleFunc("POST /code/check", server.HandleCodeCheck)
+
+	// serve local datastar.js from ./static/datastar.js
+	r.HandleFunc("GET /datastar.js", func(w http.ResponseWriter, req *http.Request) {
+		http.ServeFile(w, req, "static/datastar.js")
+	})
+	// serve source map if requested
+	r.HandleFunc("GET /datastar.js.map", func(w http.ResponseWriter, req *http.Request) {
+		http.ServeFile(w, req, "static/datastar.js.map")
+	})
+
+	// CORS for development - wrap the router
+	var handler http.Handler = http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
+		w.Header().Set("Access-Control-Allow-Origin", "*")
+		w.Header().Set("Access-Control-Allow-Methods", "GET, POST, OPTIONS")
+		w.Header().Set("Access-Control-Allow-Headers", "Content-Type")
+
+		if req.Method == "OPTIONS" {
+			w.WriteHeader(http.StatusOK)
+			return
+		}
+
+		r.ServeHTTP(w, req)
+	})
+
+	// wrap with logging middleware to print incoming requests
+	handler = loggingMiddleware(handler)
+
+	fmt.Println("🚀 Tutorial server starting on http://localhost:8080")
+	fmt.Println("📚 Open your browser and start learning!")
+	log.Fatal(http.ListenAndServe(":8080", handler))
+}
+
+// normalizeDataOnAttrs replaces older data-on-click attrs with rc6's data-on:click
+func normalizeDataOnAttrs(s string) string {
+	if s == "" {
+		return s
+	}
+	// replace old attr name (and any accidental variants) with the new rc6 name
+	s = strings.ReplaceAll(s, "data-on-click", "data-on:click")
+	s = strings.ReplaceAll(s, "data-on\\:click", "data-on:click") // defensive
+	return s
+}
diff --git a/experiments/tutorial/notes.txt b/experiments/tutorial/notes.txt
new file mode 100644
index 0000000..e0d50b6
--- /dev/null
+++ b/experiments/tutorial/notes.txt
@@ -0,0 +1 @@
+<script type="module" src="https://cdn.jsdelivr.net/gh/starfederation/datastar@1.0.0-RC.6/bundles/datastar.js"></script>
\ No newline at end of file
diff --git a/experiments/tutorial/static/datastar.js b/experiments/tutorial/static/datastar.js
new file mode 100644
index 0000000..be57e9d
--- /dev/null
+++ b/experiments/tutorial/static/datastar.js
@@ -0,0 +1,9 @@
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+//# sourceMappingURL=datastar.js.map
diff --git a/experiments/tutorial/static/datastar.js.map b/experiments/tutorial/static/datastar.js.map
new file mode 100644
index 0000000..f82819f
--- /dev/null
+++ b/experiments/tutorial/static/datastar.js.map
@@ -0,0 +1,7 @@
+{
+  "version": 3,
+  "sources": ["../library/src/engine/consts.ts", "../library/src/utils/text.ts", "../library/src/utils/polyfills.ts", "../library/src/utils/paths.ts", "../library/src/engine/signals.ts", "../library/src/utils/dom.ts", "../library/src/engine/engine.ts", "../library/src/engine/morph.ts", "../library/src/plugins/actions/peek.ts", "../library/src/plugins/actions/setAll.ts", "../library/src/plugins/actions/toggleAll.ts", "../library/src/plugins/actions/fetch.ts", "../library/src/plugins/attributes/attr.ts", "../library/src/plugins/attributes/bind.ts", "../library/src/plugins/attributes/class.ts", "../library/src/plugins/attributes/computed.ts", "../library/src/plugins/attributes/effect.ts", "../library/src/plugins/attributes/indicator.ts", "../library/src/plugins/attributes/jsonSignals.ts", "../library/src/utils/tags.ts", "../library/src/utils/timing.ts", "../library/src/utils/view-transitions.ts", "../library/src/plugins/attributes/on.ts", "../library/src/plugins/attributes/onIntersect.ts", "../library/src/plugins/attributes/onInterval.ts", "../library/src/plugins/attributes/init.ts", "../library/src/plugins/attributes/onSignalPatch.ts", "../library/src/plugins/attributes/ref.ts", "../library/src/plugins/attributes/show.ts", "../library/src/plugins/attributes/signals.ts", "../library/src/plugins/attributes/style.ts", "../library/src/plugins/attributes/text.ts", "../library/src/plugins/watchers/patchElements.ts", "../library/src/plugins/watchers/patchSignals.ts"],
+  "sourcesContent": ["const lol = /\uD83D\uDD95JS_DS\uD83D\uDE80/.source\nexport const DSP = lol.slice(0, 5)\nexport const DSS = lol.slice(4)\nexport const DATASTAR_FETCH_EVENT = 'datastar-fetch'\nexport const DATASTAR_SIGNAL_PATCH_EVENT = 'datastar-signal-patch'\n", "import type { Modifiers } from '@engine/types'\n\nexport const kebab = (str: string): string =>\n  str\n    .replace(/([a-z0-9])([A-Z])/g, '$1-$2')\n    .replace(/([a-z])([0-9]+)/gi, '$1-$2')\n    .replace(/([0-9]+)([a-z])/gi, '$1-$2')\n    .toLowerCase()\n\nexport const camel = (str: string): string =>\n  kebab(str).replace(/-./g, (x) => x[1].toUpperCase())\n\nexport const snake = (str: string): string => kebab(str).replace(/-/g, '_')\n\nexport const pascal = (str: string): string =>\n  camel(str).replace(/(^.|(?<=\\.).)/g, (x) => x[0].toUpperCase())\n\nexport const jsStrToObject = (raw: string) => {\n  try {\n    return JSON.parse(raw)\n  } catch {\n    // If JSON parsing fails, try to evaluate as a JavaScript object\n    // This is less safe and should be used with caution\n    return Function(`return (${raw})`)()\n  }\n}\n\nconst caseFns: Record<string, (s: string) => string> = {\n  camel: (str) => str.replace(/-[a-z]/g, (x) => x[1].toUpperCase()),\n  snake: (str) => str.replace(/-/g, '_'),\n  pascal: (str) => str[0].toUpperCase() + caseFns.camel(str.slice(1)),\n}\n\nexport const modifyCasing = (\n  str: string,\n  mods: Modifiers,\n  defaultCase = 'camel',\n): string => {\n  for (const c of mods.get('case') || [defaultCase]) {\n    str = caseFns[c]?.(str) || str\n  }\n  return str\n}\n\nexport const aliasify = (name: string) =>\n  ALIAS ? `data-${ALIAS}-${name}` : `data-${name}`\n", "export const hasOwn: (obj: object, prop: PropertyKey) => boolean =\n  // @ts-expect-error\n  Object.hasOwn ?? Object.prototype.hasOwnProperty.call\n", "import type { Paths } from '@engine/types'\nimport { hasOwn } from '@utils/polyfills'\n\nexport const isPojo = (obj: any): obj is Record<string, any> =>\n  obj !== null &&\n  typeof obj === 'object' &&\n  (Object.getPrototypeOf(obj) === Object.prototype ||\n    Object.getPrototypeOf(obj) === null)\n\nexport const isEmpty = (obj: Record<string, any>): boolean => {\n  for (const prop in obj) {\n    if (hasOwn(obj, prop)) {\n      return false\n    }\n  }\n  return true\n}\n\nexport const updateLeaves = (\n  obj: Record<string, any>,\n  fn: (oldValue: any) => any,\n) => {\n  for (const key in obj) {\n    const val = obj[key]\n    if (isPojo(val) || Array.isArray(val)) {\n      updateLeaves(val, fn)\n    } else {\n      obj[key] = fn(val)\n    }\n  }\n}\n\nexport const pathToObj = (paths: Paths): Record<string, any> => {\n  const result: Record<string, any> = {}\n  for (const [path, value] of paths) {\n    const keys = path.split('.')\n    const lastKey = keys.pop()!\n    const obj = keys.reduce((acc, key) => (acc[key] ??= {}), result)\n    obj[lastKey] = value\n  }\n  return result\n}\n", "import { DATASTAR_SIGNAL_PATCH_EVENT } from '@engine/consts'\nimport type {\n  Computed,\n  Effect,\n  JSONPatch,\n  MergePatchArgs,\n  Paths,\n  Signal,\n  SignalFilterOptions,\n} from '@engine/types'\nimport { isPojo, pathToObj } from '@utils/paths'\nimport { hasOwn } from '@utils/polyfills'\n\ninterface ReactiveNode {\n  deps_?: Link\n  depsTail_?: Link\n  subs_?: Link\n  subsTail_?: Link\n  flags_: ReactiveFlags\n}\n\ninterface Link {\n  version_: number\n  dep_: ReactiveNode\n  sub_: ReactiveNode\n  prevSub_?: Link\n  nextSub_?: Link\n  prevDep_?: Link\n  nextDep_?: Link\n}\n\ninterface Stack<T> {\n  value_: T\n  prev_?: Stack<T>\n}\n\nenum ReactiveFlags {\n  None = 0,\n  Mutable = 1 << 0,\n  Watching = 1 << 1,\n  RecursedCheck = 1 << 2,\n  Recursed = 1 << 3,\n  Dirty = 1 << 4,\n  Pending = 1 << 5,\n}\n\nenum EffectFlags {\n  Queued = 1 << 6,\n}\n\ninterface AlienEffect extends ReactiveNode {\n  fn_(): void\n}\n\ninterface AlienComputed<T = unknown> extends ReactiveNode {\n  value_?: T\n  getter(previousValue?: T): T\n}\n\ninterface AlienSignal<T = unknown> extends ReactiveNode {\n  previousValue: T\n  value_: T\n}\n\nconst currentPatch: Paths = []\nconst queuedEffects: (AlienEffect | undefined)[] = []\nlet batchDepth = 0\nlet notifyIndex = 0\nlet queuedEffectsLength = 0\nlet prevSub: ReactiveNode | undefined\nlet activeSub: ReactiveNode | undefined\nlet version = 0\n\nexport const beginBatch = (): void => {\n  batchDepth++\n}\n\nexport const endBatch = (): void => {\n  if (!--batchDepth) {\n    flush()\n    dispatch()\n  }\n}\n\nexport const startPeeking = (sub?: ReactiveNode): void => {\n  prevSub = activeSub\n  activeSub = sub\n}\n\nexport const stopPeeking = (): void => {\n  activeSub = prevSub\n  prevSub = undefined\n}\n\nexport const signal = <T>(initialValue?: T): Signal<T> => {\n  return signalOper.bind(0, {\n    previousValue: initialValue,\n    value_: initialValue,\n    flags_: 1 satisfies ReactiveFlags.Mutable,\n  }) as Signal<T>\n}\n\nconst computedSymbol = Symbol('computed')\nexport const computed = <T>(getter: (previousValue?: T) => T): Computed<T> => {\n  const c = computedOper.bind(0, {\n    flags_: 17 as ReactiveFlags.Mutable | ReactiveFlags.Dirty,\n    getter,\n  }) as Computed<T>\n  // @ts-expect-error\n  c[computedSymbol] = 1\n  return c\n}\n\nexport const effect = (fn: () => void): Effect => {\n  const e: AlienEffect = {\n    fn_: fn,\n    flags_: 2 satisfies ReactiveFlags.Watching,\n  }\n  if (activeSub) {\n    link(e, activeSub)\n  }\n  startPeeking(e)\n  beginBatch()\n  try {\n    e.fn_()\n  } finally {\n    endBatch()\n    stopPeeking()\n  }\n  return effectOper.bind(0, e)\n}\n\nconst flush = () => {\n  while (notifyIndex < queuedEffectsLength) {\n    const effect = queuedEffects[notifyIndex]!\n    queuedEffects[notifyIndex++] = undefined\n    run(effect, (effect.flags_ &= ~EffectFlags.Queued))\n  }\n  notifyIndex = 0\n  queuedEffectsLength = 0\n}\n\nconst update = (signal: AlienSignal | AlienComputed): boolean => {\n  if ('getter' in signal) {\n    return updateComputed(signal)\n  }\n  return updateSignal(signal, signal.value_)\n}\n\nconst updateComputed = (c: AlienComputed): boolean => {\n  startPeeking(c)\n  startTracking(c)\n  try {\n    const oldValue = c.value_\n    return oldValue !== (c.value_ = c.getter(oldValue))\n  } finally {\n    stopPeeking()\n    endTracking(c)\n  }\n}\n\nconst updateSignal = <T>(s: AlienSignal<T>, value: T): boolean => {\n  s.flags_ = 1 satisfies ReactiveFlags.Mutable\n  return s.previousValue !== (s.previousValue = value)\n}\n\nconst notify = (e: AlienEffect): void => {\n  const flags = e.flags_\n  if (!(flags & EffectFlags.Queued)) {\n    e.flags_ = flags | EffectFlags.Queued\n    const subs = e.subs_\n    if (subs) {\n      notify(subs.sub_ as AlienEffect)\n    } else {\n      queuedEffects[queuedEffectsLength++] = e\n    }\n  }\n}\n\nconst run = (e: AlienEffect, flags: ReactiveFlags): void => {\n  if (\n    flags & (16 satisfies ReactiveFlags.Dirty) ||\n    (flags & (32 satisfies ReactiveFlags.Pending) && checkDirty(e.deps_!, e))\n  ) {\n    startPeeking(e)\n    startTracking(e)\n    beginBatch()\n    try {\n      e.fn_()\n    } finally {\n      endBatch()\n      stopPeeking()\n      endTracking(e)\n    }\n    return\n  }\n  if (flags & (32 satisfies ReactiveFlags.Pending)) {\n    e.flags_ = flags & ~(32 satisfies ReactiveFlags.Pending)\n  }\n  let link = e.deps_\n  while (link) {\n    const dep = link.dep_\n    const depFlags = dep.flags_\n    if (depFlags & EffectFlags.Queued) {\n      run(dep as AlienEffect, (dep.flags_ = depFlags & ~EffectFlags.Queued))\n    }\n    link = link.nextDep_\n  }\n}\n\nconst signalOper = <T>(s: AlienSignal<T>, ...value: [T]): T | boolean => {\n  if (value.length) {\n    if (s.value_ !== (s.value_ = value[0])) {\n      s.flags_ = 17 as ReactiveFlags.Mutable | ReactiveFlags.Dirty\n      const subs = s.subs_\n      if (subs) {\n        propagate(subs)\n        if (!batchDepth) {\n          flush()\n        }\n      }\n      return true\n    }\n    return false\n  }\n  const currentValue = s.value_\n  if (s.flags_ & (16 satisfies ReactiveFlags.Dirty)) {\n    if (updateSignal(s, currentValue)) {\n      const subs_ = s.subs_\n      if (subs_) {\n        shallowPropagate(subs_)\n      }\n    }\n  }\n  if (activeSub) {\n    link(s, activeSub)\n  }\n  return currentValue\n}\n\nconst computedOper = <T>(c: AlienComputed<T>): T => {\n  const flags = c.flags_\n  if (\n    flags & (16 satisfies ReactiveFlags.Dirty) ||\n    (flags & (32 satisfies ReactiveFlags.Pending) && checkDirty(c.deps_!, c))\n  ) {\n    if (updateComputed(c)) {\n      const subs = c.subs_\n      if (subs) {\n        shallowPropagate(subs)\n      }\n    }\n  } else if (flags & (32 satisfies ReactiveFlags.Pending)) {\n    c.flags_ = flags & ~(32 satisfies ReactiveFlags.Pending)\n  }\n  if (activeSub) {\n    link(c, activeSub)\n  }\n  return c.value_!\n}\n\nconst effectOper = (e: AlienEffect): void => {\n  let dep = e.deps_\n  while (dep) {\n    dep = unlink(dep, e)\n  }\n  const sub = e.subs_\n  if (sub) {\n    unlink(sub)\n  }\n  e.flags_ = 0 satisfies ReactiveFlags.None\n}\n\nconst link = (dep: ReactiveNode, sub: ReactiveNode): void => {\n  const prevDep = sub.depsTail_\n  if (prevDep && prevDep.dep_ === dep) {\n    return\n  }\n  const nextDep = prevDep ? prevDep.nextDep_ : sub.deps_\n  if (nextDep && nextDep.dep_ === dep) {\n    nextDep.version_ = version\n    sub.depsTail_ = nextDep\n    return\n  }\n  const prevSub = dep.subsTail_\n  if (prevSub && prevSub.version_ === version && prevSub.sub_ === sub) {\n    return\n  }\n  const newLink =\n    (sub.depsTail_ =\n    dep.subsTail_ =\n      {\n        version_: version,\n        dep_: dep,\n        sub_: sub,\n        prevDep_: prevDep,\n        nextDep_: nextDep,\n        prevSub_: prevSub,\n      })\n  if (nextDep) {\n    nextDep.prevDep_ = newLink\n  }\n  if (prevDep) {\n    prevDep.nextDep_ = newLink\n  } else {\n    sub.deps_ = newLink\n  }\n  if (prevSub) {\n    prevSub.nextSub_ = newLink\n  } else {\n    dep.subs_ = newLink\n  }\n}\n\nconst unlink = (link: Link, sub = link.sub_): Link | undefined => {\n  const dep_ = link.dep_\n  const prevDep_ = link.prevDep_\n  const nextDep_ = link.nextDep_\n  const nextSub_ = link.nextSub_\n  const prevSub_ = link.prevSub_\n  if (nextDep_) {\n    nextDep_.prevDep_ = prevDep_\n  } else {\n    sub.depsTail_ = prevDep_\n  }\n  if (prevDep_) {\n    prevDep_.nextDep_ = nextDep_\n  } else {\n    sub.deps_ = nextDep_\n  }\n  if (nextSub_) {\n    nextSub_.prevSub_ = prevSub_\n  } else {\n    dep_.subsTail_ = prevSub_\n  }\n  if (prevSub_) {\n    prevSub_.nextSub_ = nextSub_\n  } else if (!(dep_.subs_ = nextSub_)) {\n    if ('getter' in dep_) {\n      let toRemove = dep_.deps_\n      if (toRemove) {\n        dep_.flags_ = 17 as ReactiveFlags.Mutable | ReactiveFlags.Dirty\n        do {\n          toRemove = unlink(toRemove, dep_)\n        } while (toRemove)\n      }\n    } else if (!('previousValue' in dep_)) {\n      effectOper(dep_ as AlienEffect)\n    }\n  }\n  return nextDep_\n}\n\nconst propagate = (link: Link): void => {\n  let next = link.nextSub_\n  let stack: Stack<Link | undefined> | undefined\n\n  top: while (true) {\n    const sub = link.sub_\n\n    let flags = sub.flags_\n\n    if (\n      !(\n        flags &\n        (60 as\n          | ReactiveFlags.RecursedCheck\n          | ReactiveFlags.Recursed\n          | ReactiveFlags.Dirty\n          | ReactiveFlags.Pending)\n      )\n    ) {\n      sub.flags_ = flags | (32 satisfies ReactiveFlags.Pending)\n    } else if (\n      !(flags & (12 as ReactiveFlags.RecursedCheck | ReactiveFlags.Recursed))\n    ) {\n      flags = 0 satisfies ReactiveFlags.None\n    } else if (!(flags & (4 satisfies ReactiveFlags.RecursedCheck))) {\n      sub.flags_ =\n        (flags & ~(8 satisfies ReactiveFlags.Recursed)) |\n        (32 satisfies ReactiveFlags.Pending)\n    } else if (\n      !(flags & (48 as ReactiveFlags.Dirty | ReactiveFlags.Pending)) &&\n      isValidLink(link, sub)\n    ) {\n      sub.flags_ =\n        flags | (40 as ReactiveFlags.Recursed | ReactiveFlags.Pending)\n      flags &= 1 satisfies ReactiveFlags.Mutable\n    } else {\n      flags = 0 satisfies ReactiveFlags.None\n    }\n\n    if (flags & (2 satisfies ReactiveFlags.Watching)) {\n      notify(sub as AlienEffect)\n    }\n\n    if (flags & (1 satisfies ReactiveFlags.Mutable)) {\n      const subSubs = sub.subs_\n      if (subSubs) {\n        const nextSub = (link = subSubs).nextSub_\n        if (nextSub) {\n          stack = { value_: next, prev_: stack }\n          next = nextSub\n        }\n        continue\n      }\n    }\n\n    if ((link = next!)) {\n      next = link.nextSub_\n      continue\n    }\n\n    while (stack) {\n      link = stack.value_!\n      stack = stack.prev_\n      if (link) {\n        next = link.nextSub_\n        continue top\n      }\n    }\n\n    break\n  }\n}\n\nconst startTracking = (sub: ReactiveNode): void => {\n  version++\n  sub.depsTail_ = undefined\n  sub.flags_ =\n    (sub.flags_ &\n      ~(56 as\n        | ReactiveFlags.Recursed\n        | ReactiveFlags.Dirty\n        | ReactiveFlags.Pending)) |\n    (4 satisfies ReactiveFlags.RecursedCheck)\n}\n\nconst endTracking = (sub: ReactiveNode): void => {\n  const depsTail_ = sub.depsTail_\n  let toRemove = depsTail_ ? depsTail_.nextDep_ : sub.deps_\n  while (toRemove) {\n    toRemove = unlink(toRemove, sub)\n  }\n  sub.flags_ &= ~(4 satisfies ReactiveFlags.RecursedCheck)\n}\n\nconst checkDirty = (link: Link, sub: ReactiveNode): boolean => {\n  let stack: Stack<Link> | undefined\n  let checkDepth = 0\n  let dirty = false\n\n  top: while (true) {\n    const dep = link.dep_\n    const flags = dep.flags_\n\n    if (sub.flags_ & (16 satisfies ReactiveFlags.Dirty)) {\n      dirty = true\n    } else if (\n      (flags & (17 as ReactiveFlags.Mutable | ReactiveFlags.Dirty)) ===\n      (17 as ReactiveFlags.Mutable | ReactiveFlags.Dirty)\n    ) {\n      if (update(dep as AlienSignal | AlienComputed)) {\n        const subs = dep.subs_!\n        if (subs.nextSub_) {\n          shallowPropagate(subs)\n        }\n        dirty = true\n      }\n    } else if (\n      (flags & (33 as ReactiveFlags.Mutable | ReactiveFlags.Pending)) ===\n      (33 as ReactiveFlags.Mutable | ReactiveFlags.Pending)\n    ) {\n      if (link.nextSub_ || link.prevSub_) {\n        stack = { value_: link, prev_: stack }\n      }\n      link = dep.deps_!\n      sub = dep\n      ++checkDepth\n      continue\n    }\n\n    if (!dirty) {\n      const nextDep = link.nextDep_\n      if (nextDep) {\n        link = nextDep\n        continue\n      }\n    }\n\n    while (checkDepth--) {\n      const firstSub = sub.subs_!\n      const hasMultipleSubs = firstSub.nextSub_\n      if (hasMultipleSubs) {\n        link = stack!.value_\n        stack = stack!.prev_\n      } else {\n        link = firstSub\n      }\n      if (dirty) {\n        if (update(sub as AlienSignal | AlienComputed)) {\n          if (hasMultipleSubs) {\n            shallowPropagate(firstSub)\n          }\n          sub = link.sub_\n          continue\n        }\n        dirty = false\n      } else {\n        sub.flags_ &= ~(32 satisfies ReactiveFlags.Pending)\n      }\n      sub = link.sub_\n      if (link.nextDep_) {\n        link = link.nextDep_\n        continue top\n      }\n    }\n\n    return dirty\n  }\n}\n\nconst shallowPropagate = (link: Link): void => {\n  do {\n    const sub = link.sub_\n    const flags = sub.flags_\n    if (\n      (flags & (48 as ReactiveFlags.Pending | ReactiveFlags.Dirty)) ===\n      (32 satisfies ReactiveFlags.Pending)\n    ) {\n      sub.flags_ = flags | (16 satisfies ReactiveFlags.Dirty)\n      if (flags & (2 satisfies ReactiveFlags.Watching)) {\n        notify(sub as AlienEffect)\n      }\n    }\n  } while ((link = link.nextSub_!))\n}\n\nconst isValidLink = (checkLink: Link, sub: ReactiveNode): boolean => {\n  let link = sub.depsTail_\n  while (link) {\n    if (link === checkLink) {\n      return true\n    }\n    link = link.prevDep_\n  }\n  return false\n}\n\nexport const getPath = <T = any>(path: string): T | undefined => {\n  let result = root\n  const split = path.split('.')\n  for (const path of split) {\n    if (result == null || !hasOwn(result, path)) {\n      return\n    }\n    result = result[path]\n  }\n  return result as T\n}\n\nconst deep = (value: any, prefix = ''): any => {\n  const isArr = Array.isArray(value)\n  if (isArr || isPojo(value)) {\n    const deepObj = (isArr ? [] : {}) as Record<string, Signal<any>>\n    for (const key in value) {\n      deepObj[key] = signal(\n        deep((value as Record<string, Signal<any>>)[key], `${prefix + key}.`),\n      )\n    }\n    const keys = signal(0)\n    return new Proxy(deepObj, {\n      get(_, prop: string) {\n        // JSON.stringify calls `.toJSON()` directly instead of checking if it exists on the object\n        // so we have to check if `toJSON` is being called and prevent a signal from automatically\n        // being made so JSON.stringify can fallback to the default stringify\n        if (!(prop === 'toJSON' && !hasOwn(deepObj, prop))) {\n          // special case for when prop is an array function because every array function needs to\n          // be reactive to when the keys change\n          if (isArr && prop in Array.prototype) {\n            keys()\n            return deepObj[prop]\n          }\n          // if prop is a symbol just return the symbol because we don't want to make up that theres\n          // an iterator symbol on an object or not\n          if (typeof prop === 'symbol') {\n            return deepObj[prop]\n          }\n          // if obj doesnt have prop OR prop is null or undefined then create a signal and default\n          // to an empty string\n          if (!hasOwn(deepObj, prop) || deepObj[prop]() == null) {\n            deepObj[prop] = signal('')\n            dispatch(prefix + prop, '')\n            keys(keys() + 1)\n          }\n          return deepObj[prop]()\n        }\n      },\n      set(_, prop: string, newValue) {\n        const path = prefix + prop\n        // special case for when setting length so we can make a diff patch\n        if (isArr && prop === 'length') {\n          const diff = (deepObj[prop] as unknown as number) - newValue\n          deepObj[prop] = newValue\n          // manually make a diff patch for now, shouldnt have to do this when object diffing is\n          // implemented. see https://github.com/starfederation/datastar-dev/issues/274\n          if (diff > 0) {\n            const patch: Record<string, any> = {}\n            for (let i = newValue; i < deepObj[prop]; i++) {\n              patch[i] = null\n            }\n            dispatch(prefix.slice(0, -1), patch)\n            keys(keys() + 1)\n          }\n        } else if (hasOwn(deepObj, prop)) {\n          if (newValue == null) {\n            delete deepObj[prop]\n            // if newValue is a computed set the computed directly instead of wrapping in signal\n          } else if (hasOwn(newValue, computedSymbol)) {\n            deepObj[prop] = newValue\n            dispatch(path, '')\n            // if prop changed after setting it then dispatch\n          } else if (deepObj[prop](deep(newValue, `${path}.`))) {\n            dispatch(path, newValue)\n          }\n          // if newValue is null or undefined then noop\n        } else if (newValue != null) {\n          // if newValue is a computed set the computed directly instead of wrapping in signal\n          if (hasOwn(newValue, computedSymbol)) {\n            deepObj[prop] = newValue\n            dispatch(path, '')\n          } else {\n            deepObj[prop] = signal(deep(newValue, `${path}.`))\n            dispatch(path, newValue)\n          }\n          keys(keys() + 1)\n        }\n\n        return true\n      },\n      deleteProperty(_, prop: string) {\n        delete deepObj[prop]\n        keys(keys() + 1)\n        return true\n      },\n      ownKeys() {\n        keys()\n        return Reflect.ownKeys(deepObj)\n      },\n      has(_, prop) {\n        keys()\n        return prop in deepObj\n      },\n    })\n  }\n  return value\n}\n\nconst dispatch = (path?: string, value?: any) => {\n  if (path !== undefined && value !== undefined) {\n    currentPatch.push([path, value])\n  }\n  if (!batchDepth && currentPatch.length) {\n    const detail = pathToObj(currentPatch)\n    currentPatch.length = 0\n    document.dispatchEvent(\n      new CustomEvent<JSONPatch>(DATASTAR_SIGNAL_PATCH_EVENT, {\n        detail,\n      }),\n    )\n  }\n}\n\nexport const mergePatch = (\n  patch: JSONPatch,\n  { ifMissing }: MergePatchArgs = {},\n): void => {\n  beginBatch()\n  for (const key in patch) {\n    if (patch[key] == null) {\n      if (!ifMissing) {\n        delete root[key]\n      }\n    } else {\n      mergeInner(patch[key], key, root, '', ifMissing)\n    }\n  }\n  endBatch()\n}\n\nexport const mergePaths = (paths: Paths, options?: MergePatchArgs): void =>\n  mergePatch(pathToObj(paths), options)\n\nconst mergeInner = (\n  patch: any,\n  target: string,\n  targetParent: Record<string, any>,\n  prefix: string,\n  ifMissing: boolean | undefined,\n): void => {\n  if (isPojo(patch)) {\n    if (\n      !(\n        hasOwn(targetParent, target) &&\n        (isPojo(targetParent[target]) || Array.isArray(targetParent[target]))\n      )\n    ) {\n      targetParent[target] = {}\n    }\n\n    for (const key in patch) {\n      if (patch[key] == null) {\n        if (!ifMissing) {\n          delete targetParent[target][key]\n        }\n      } else {\n        mergeInner(\n          patch[key],\n          key,\n          targetParent[target],\n          `${prefix + target}.`,\n          ifMissing,\n        )\n      }\n    }\n  } else if (!(ifMissing && hasOwn(targetParent, target))) {\n    targetParent[target] = patch\n  }\n}\n\nconst toRegExp = (val: string | RegExp): RegExp =>\n  typeof val === 'string' ? RegExp(val.replace(/^\\/|\\/$/g, '')) : val\n\n/**\n * Filters the root store based on an include and exclude RegExp\n *\n * @returns The filtered object\n */\nexport const filtered = (\n  { include = /.*/, exclude = /(?!)/ }: SignalFilterOptions = {},\n  obj: JSONPatch = root,\n): Record<string, any> => {\n  const includeRe = toRegExp(include)\n  const excludeRe = toRegExp(exclude)\n  const paths: Paths = []\n  const stack: [any, string][] = [[obj, '']]\n\n  while (stack.length) {\n    const [node, prefix] = stack.pop()!\n\n    for (const key in node) {\n      const path = prefix + key\n      if (isPojo(node[key])) {\n        stack.push([node[key], `${path}.`])\n      } else if (includeRe.test(path) && !excludeRe.test(path)) {\n        paths.push([path, getPath(path)])\n      }\n    }\n  }\n\n  return pathToObj(paths)\n}\n\nexport const root: Record<string, any> = deep({})\n", "import type { HTMLOrSVG } from '@engine/types'\n\nexport const isHTMLOrSVG = (el: Node): el is HTMLOrSVG =>\n  el instanceof HTMLElement ||\n  el instanceof SVGElement ||\n  el instanceof MathMLElement\n", "import { DATASTAR_FETCH_EVENT, DSP, DSS } from '@engine/consts'\nimport { snake } from '@utils/text'\nimport { root } from '@engine/signals'\nimport type {\n  ActionPlugin,\n  ActionContext,\n  AttributeContext,\n  AttributePlugin,\n  DatastarFetchEvent,\n  HTMLOrSVG,\n  Requirement,\n  WatcherPlugin,\n} from '@engine/types'\nimport { isHTMLOrSVG } from '@utils/dom'\nimport { aliasify } from '@utils/text'\n\nconst url = 'https://data-star.dev/errors'\n\nconst error = (\n  ctx: Record<string, any>,\n  reason: string,\n  metadata: Record<string, any> = {},\n) => {\n  Object.assign(metadata, ctx)\n  const e = new Error()\n  const r = snake(reason)\n  const q = new URLSearchParams({\n    metadata: JSON.stringify(metadata),\n  }).toString()\n  const c = JSON.stringify(metadata, null, 2)\n  e.message = `${reason}\\nMore info: ${url}/${r}?${q}\\nContext: ${c}`\n  return e\n}\n\nconst actionPlugins: Map<string, ActionPlugin> = new Map()\nconst attributePlugins: Map<string, AttributePlugin> = new Map()\nconst watcherPlugins: Map<string, WatcherPlugin> = new Map()\n\nexport const actions: Record<\n  string,\n  (ctx: ActionContext, ...args: any[]) => any\n> = new Proxy(\n  {},\n  {\n    get: (_, prop: string) => actionPlugins.get(prop)?.apply,\n    has: (_, prop: string) => actionPlugins.has(prop),\n    ownKeys: () => Reflect.ownKeys(actionPlugins),\n    set: () => false,\n    deleteProperty: () => false,\n  },\n)\n\n// Map of cleanups keyed by element and attribute name\nconst removals = new Map<HTMLOrSVG, Map<string, () => void>>()\n\nconst queuedAttributes: AttributePlugin[] = []\nconst queuedAttributeNames = new Set<string>()\nexport const attribute = <R extends Requirement, B extends boolean>(\n  plugin: AttributePlugin<R, B>,\n): void => {\n  queuedAttributes.push(plugin as unknown as AttributePlugin)\n\n  if (queuedAttributes.length === 1) {\n    setTimeout(() => {\n      for (const attribute of queuedAttributes) {\n        queuedAttributeNames.add(attribute.name)\n        attributePlugins.set(attribute.name, attribute)\n      }\n      queuedAttributes.length = 0\n      apply()\n      queuedAttributeNames.clear()\n    })\n  }\n}\n\nexport const action = <T>(plugin: ActionPlugin<T>): void => {\n  actionPlugins.set(plugin.name, plugin)\n}\n\ndocument.addEventListener(DATASTAR_FETCH_EVENT, ((\n  evt: CustomEvent<DatastarFetchEvent>,\n) => {\n  const plugin = watcherPlugins.get(evt.detail.type)\n  if (plugin) {\n    plugin.apply(\n      {\n        error: error.bind(0, {\n          plugin: { type: 'watcher', name: plugin.name },\n          element: {\n            id: (evt.target as Element).id,\n            tag: (evt.target as Element).tagName,\n          },\n        }),\n      },\n      evt.detail.argsRaw,\n    )\n  }\n}) as EventListener)\n\nexport const watcher = (plugin: WatcherPlugin): void => {\n  watcherPlugins.set(plugin.name, plugin)\n}\n\nconst cleanupEls = (els: Iterable<HTMLOrSVG>): void => {\n  for (const el of els) {\n    const cleanups = removals.get(el)\n    // If removals has el, delete it and run all cleanup functions\n    if (removals.delete(el)) {\n      for (const cleanup of cleanups!.values()) {\n        cleanup()\n      }\n      cleanups!.clear()\n    }\n  }\n}\n\nconst aliasedIgnore = aliasify('ignore')\nconst aliasedIgnoreAttr = `[${aliasedIgnore}]`\nconst shouldIgnore = (el: HTMLOrSVG) =>\n  el.hasAttribute(`${aliasedIgnore}__self`) || !!el.closest(aliasedIgnoreAttr)\n\nconst applyEls = (els: Iterable<HTMLOrSVG>, onlyNew?: boolean): void => {\n  for (const el of els) {\n    if (!shouldIgnore(el)) {\n      for (const key in el.dataset) {\n        applyAttributePlugin(\n          el,\n          key.replace(/[A-Z]/g, '-$&').toLowerCase(),\n          el.dataset[key]!,\n          onlyNew,\n        )\n      }\n    }\n  }\n}\n\nconst observe = (mutations: MutationRecord[]) => {\n  for (const {\n    target,\n    type,\n    attributeName,\n    addedNodes,\n    removedNodes,\n  } of mutations) {\n    if (type === 'childList') {\n      for (const node of removedNodes) {\n        if (isHTMLOrSVG(node)) {\n          cleanupEls([node])\n          cleanupEls(node.querySelectorAll<HTMLOrSVG>('*'))\n        }\n      }\n\n      for (const node of addedNodes) {\n        if (isHTMLOrSVG(node)) {\n          applyEls([node])\n          applyEls(node.querySelectorAll<HTMLOrSVG>('*'))\n        }\n      }\n    } else if (\n      type === 'attributes' &&\n      attributeName!.startsWith('data-') &&\n      isHTMLOrSVG(target) &&\n      !shouldIgnore(target)\n    ) {\n      // skip over 'data-'\n      const key = attributeName!.slice(5)\n      const value = target.getAttribute(attributeName!)\n      if (value === null) {\n        const cleanups = removals.get(target)\n        if (cleanups) {\n          cleanups.get(key)?.()\n          cleanups.delete(key)\n        }\n      } else {\n        applyAttributePlugin(target, key, value)\n      }\n    }\n  }\n}\n\n// TODO: mutation observer per root so applying to web component doesnt overwrite main observer\nconst mutationObserver = new MutationObserver(observe)\n\nexport const apply = (\n  root: HTMLOrSVG | ShadowRoot = document.documentElement,\n): void => {\n  if (isHTMLOrSVG(root)) {\n    applyEls([root], true)\n  }\n  applyEls(root.querySelectorAll<HTMLOrSVG>('*'), true)\n\n  mutationObserver.observe(root, {\n    subtree: true,\n    childList: true,\n    attributes: true,\n  })\n}\n\nconst applyAttributePlugin = (\n  el: HTMLOrSVG,\n  attrKey: string,\n  value: string,\n  onlyNew?: boolean,\n): void => {\n  if (!ALIAS || attrKey.startsWith(`${ALIAS}-`)) {\n    const rawKey = ALIAS ? attrKey.slice(ALIAS.length + 1) : attrKey\n    const [namePart, ...rawModifiers] = rawKey.split('__')\n    const [pluginName, key] = namePart.split(/:(.+)/)\n    const plugin = attributePlugins.get(pluginName)\n    if ((!onlyNew || queuedAttributeNames.has(pluginName)) && plugin) {\n      const ctx = {\n        el,\n        rawKey,\n        mods: new Map(),\n        error: error.bind(0, {\n          plugin: { type: 'attribute', name: plugin.name },\n          element: { id: el.id, tag: el.tagName },\n          expression: { rawKey, key, value },\n        }),\n        key,\n        value,\n        rx: undefined,\n      } as AttributeContext\n\n      const keyReq =\n        (plugin.requirement &&\n          (typeof plugin.requirement === 'string'\n            ? plugin.requirement\n            : plugin.requirement.key)) ||\n        'allowed'\n      const valueReq =\n        (plugin.requirement &&\n          (typeof plugin.requirement === 'string'\n            ? plugin.requirement\n            : plugin.requirement.value)) ||\n        'allowed'\n\n      if (key) {\n        if (keyReq === 'denied') {\n          throw ctx.error('KeyNotAllowed')\n        }\n      } else if (keyReq === 'must') {\n        throw ctx.error('KeyRequired')\n      }\n\n      if (value) {\n        if (valueReq === 'denied') {\n          throw ctx.error('ValueNotAllowed')\n        }\n      } else if (valueReq === 'must') {\n        throw ctx.error('ValueRequired')\n      }\n\n      if (keyReq === 'exclusive' || valueReq === 'exclusive') {\n        if (key && value) {\n          throw ctx.error('KeyAndValueProvided')\n        }\n        if (!key && !value) {\n          throw ctx.error('KeyOrValueRequired')\n        }\n      }\n\n      if (value) {\n        let cachedRx: GenRxFn\n        ctx.rx = (...args: any[]) => {\n          if (!cachedRx) {\n            cachedRx = genRx(value, {\n              returnsValue: plugin.returnsValue,\n              argNames: plugin.argNames,\n            })\n          }\n          return cachedRx(el, ...args)\n        }\n      }\n\n      for (const rawMod of rawModifiers) {\n        const [label, ...mod] = rawMod.split('.')\n        ctx.mods.set(label, new Set(mod))\n      }\n\n      const cleanup = plugin.apply(ctx)\n      if (cleanup) {\n        let cleanups = removals.get(el)\n        if (cleanups) {\n          cleanups.get(rawKey)?.()\n        } else {\n          cleanups = new Map()\n          removals.set(el, cleanups)\n        }\n        cleanups.set(rawKey, cleanup)\n      }\n    }\n  }\n}\n\ntype GenRxOptions = {\n  returnsValue?: boolean\n  argNames?: string[]\n}\n\ntype GenRxFn = <T>(el: HTMLOrSVG, ...args: any[]) => T\n\nconst genRx = (\n  value: string,\n  { returnsValue = false, argNames = [] }: GenRxOptions = {},\n): GenRxFn => {\n  let expr = ''\n  if (returnsValue) {\n    // This regex allows Datastar expressions to support nested\n    // regex and strings that contain ; without breaking.\n    //\n    // Each of these regex defines a block type we want to match\n    // (importantly we ignore the content within these blocks):\n    //\n    // regex            \\/(\\\\\\/|[^\\/])*\\/\n    // double quotes      \"(\\\\\"|[^\\\"])*\"\n    // single quotes      '(\\\\'|[^'])*'\n    // ticks              `(\\\\`|[^`])*`\n    // iife               \\(\\s*((function)\\s*\\(\\s*\\)|(\\(\\s*\\))\\s*=>)\\s*(?:\\{[\\s\\S]*?\\}|[^;)\\{]*)\\s*\\)\\s*\\(\\s*\\)\n    //\n    // The iife support is (intentionally) limited. It only supports\n    // function and arrow syntax with no arguments, and no nested IIFEs.\n    //\n    // We also want to match the non delimiter part of statements\n    // note we only support ; statement delimiters:\n    //\n    // [^;]\n    //\n    const statementRe =\n      /(\\/(\\\\\\/|[^/])*\\/|\"(\\\\\"|[^\"])*\"|'(\\\\'|[^'])*'|`(\\\\`|[^`])*`|\\(\\s*((function)\\s*\\(\\s*\\)|(\\(\\s*\\))\\s*=>)\\s*(?:\\{[\\s\\S]*?\\}|[^;){]*)\\s*\\)\\s*\\(\\s*\\)|[^;])+/gm\n    const statements = value.trim().match(statementRe)\n    if (statements) {\n      const lastIdx = statements.length - 1\n      const last = statements[lastIdx].trim()\n      if (!last.startsWith('return')) {\n        statements[lastIdx] = `return (${last});`\n      }\n      expr = statements.join(';\\n')\n    }\n  } else {\n    expr = value.trim()\n  }\n\n  // Ignore any escaped values\n  const escaped = new Map<string, string>()\n  const escapeRe = RegExp(`(?:${DSP})(.*?)(?:${DSS})`, 'gm')\n  let counter = 0\n  for (const match of expr.matchAll(escapeRe)) {\n    const k = match[1]\n    const v = `__escaped${counter++}`\n    escaped.set(v, k)\n    expr = expr.replace(DSP + k + DSS, v)\n  }\n\n  // Replace signal references with bracket notation\n  // Examples:\n  //   $count          -> $['count']\n  //   $count--        -> $['count']--\n  //   $foo.bar        -> $['foo']['bar']\n  //   $foo-bar        -> $['foo-bar']\n  //   $foo.bar-baz    -> $['foo']['bar-baz']\n  //   $foo-$bar       -> $['foo']-$['bar']\n  //   $arr[$index]    -> $['arr'][$['index']]\n  //   $['foo']        -> $['foo']\n  //   $foo[obj.bar]   -> $['foo'][obj.bar]\n  //   $foo['bar.baz'] -> $['foo']['bar.baz']\n  //   $123            -> $['123']\n  //   $foo.0.name     -> $['foo']['0']['name']\n\n  expr = expr\n    // $['x'] -> $x (normalize existing bracket notation)\n    .replace(/\\$\\['([a-zA-Z_$\\d][\\w$]*)'\\]/g, '$$$1')\n    // $x -> $['x'] (including dots and hyphens)\n    .replace(/\\$([a-zA-Z_\\d]\\w*(?:[.-]\\w+)*)/g, (_, signalName) =>\n      signalName\n        .split('.')\n        .reduce((acc: string, part: string) => `${acc}['${part}']`, '$'),\n    )\n    // [$x] -> [$['x']] ($ inside brackets)\n    .replace(\n      /\\[(\\$[a-zA-Z_\\d]\\w*)\\]/g,\n      (_, varName) => `[$['${varName.slice(1)}']]`,\n    )\n\n  expr = expr.replaceAll(/@(\\w+)\\(/g, '__action(\"$1\",evt,')\n\n  // Replace any escaped values\n  for (const [k, v] of escaped) {\n    expr = expr.replace(k, v)\n  }\n\n  try {\n    const fn = Function('el', '$', '__action', 'evt', ...argNames, expr)\n    return (el: HTMLOrSVG, ...args: any[]) => {\n      const action = (name: string, evt: Event | undefined, ...args: any[]) => {\n        const err = error.bind(0, {\n          plugin: { type: 'action', name },\n          element: { id: el.id, tag: el.tagName },\n          expression: {\n            fnContent: expr,\n            value,\n          },\n        })\n        const fn = actions[name]\n        if (fn) {\n          return fn(\n            {\n              el,\n              evt,\n              error: err,\n            },\n            ...args,\n          )\n        }\n        throw err('UndefinedAction')\n      }\n      try {\n        return fn(el, root, action, undefined, ...args)\n      } catch (e: any) {\n        console.error(e)\n        throw error(\n          {\n            element: { id: el.id, tag: el.tagName },\n            expression: {\n              fnContent: expr,\n              value,\n            },\n            error: e.message,\n          },\n          'ExecuteExpression',\n        )\n      }\n    }\n  } catch (e: any) {\n    console.error(e)\n    throw error(\n      {\n        expression: {\n          fnContent: expr,\n          value,\n        },\n        error: e.message,\n      },\n      'GenerateExpression',\n    )\n  }\n}\n", "import { isHTMLOrSVG } from '@utils/dom'\nimport { aliasify } from '@utils/text'\n\nconst ctxIdMap = new Map<Node, Set<string>>()\nconst ctxPersistentIds = new Set<string>()\nconst oldIdTagNameMap = new Map<string, string>()\nconst duplicateIds = new Set<string>()\nconst ctxPantry = document.createElement('div')\nctxPantry.hidden = true\n\nconst aliasedIgnoreMorph = aliasify('ignore-morph')\nconst aliasedIgnoreMorphAttr = `[${aliasedIgnoreMorph}]`\nexport const morph = (\n  oldElt: Element | ShadowRoot,\n  newContent: DocumentFragment | Element,\n  mode: 'outer' | 'inner' = 'outer',\n): void => {\n  if (\n    (isHTMLOrSVG(oldElt) &&\n      isHTMLOrSVG(newContent) &&\n      oldElt.hasAttribute(aliasedIgnoreMorph) &&\n      newContent.hasAttribute(aliasedIgnoreMorph)) ||\n    oldElt.parentElement?.closest(aliasedIgnoreMorphAttr)\n  ) {\n    return\n  }\n\n  const normalizedElt = document.createElement('div')\n  normalizedElt.append(newContent)\n  document.body.insertAdjacentElement('afterend', ctxPantry)\n\n  // Computes the set of IDs that persist between the two contents excluding duplicates\n  const oldIdElements = oldElt.querySelectorAll('[id]')\n  for (const { id, tagName } of oldIdElements) {\n    if (oldIdTagNameMap.has(id)) {\n      duplicateIds.add(id)\n    } else {\n      oldIdTagNameMap.set(id, tagName)\n    }\n  }\n  if (oldElt instanceof Element && oldElt.id) {\n    if (oldIdTagNameMap.has(oldElt.id)) {\n      duplicateIds.add(oldElt.id)\n    } else {\n      oldIdTagNameMap.set(oldElt.id, oldElt.tagName)\n    }\n  }\n\n  ctxPersistentIds.clear()\n  const newIdElements = normalizedElt.querySelectorAll('[id]')\n  for (const { id, tagName } of newIdElements) {\n    if (ctxPersistentIds.has(id)) {\n      duplicateIds.add(id)\n    } else if (oldIdTagNameMap.get(id) === tagName) {\n      ctxPersistentIds.add(id)\n    }\n  }\n\n  for (const id of duplicateIds) {\n    ctxPersistentIds.delete(id)\n  }\n\n  oldIdTagNameMap.clear()\n  duplicateIds.clear()\n  ctxIdMap.clear()\n\n  const parent = mode === 'outer' ? oldElt.parentElement! : oldElt\n  populateIdMapWithTree(parent, oldIdElements)\n  populateIdMapWithTree(normalizedElt, newIdElements)\n\n  morphChildren(\n    parent,\n    normalizedElt,\n    mode === 'outer' ? oldElt : null,\n    oldElt.nextSibling,\n  )\n\n  ctxPantry.remove()\n}\n\n// This is the core algorithm for matching up children.\n// The idea is to use ID sets to try to match up nodes as faithfully as possible.\n// We greedily match, which allows us to keep the algorithm fast,\n// but by using ID sets, we are able to better match up with content deeper in the DOM.\nconst morphChildren = (\n  oldParent: Element | ShadowRoot, // the old content that we are merging the new content into\n  newParent: Element, // the parent element of the new content\n  insertionPoint: Node | null = null, // the point in the DOM we start morphing at (defaults to first child)\n  endPoint: Node | null = null, // the point in the DOM we stop morphing at (defaults to after last child)\n): void => {\n  // normalize\n  if (\n    oldParent instanceof HTMLTemplateElement &&\n    newParent instanceof HTMLTemplateElement\n  ) {\n    // we can pretend the DocumentElement is an Element\n    oldParent = oldParent.content as unknown as Element\n    newParent = newParent.content as unknown as Element\n  }\n  insertionPoint ??= oldParent.firstChild\n\n  // run through all the new content\n  for (const newChild of newParent.childNodes) {\n    // once we reach the end of the old parent content skip to the end and insert the rest\n    if (insertionPoint && insertionPoint !== endPoint) {\n      const bestMatch = findBestMatch(newChild, insertionPoint, endPoint)\n      if (bestMatch) {\n        // if the node to morph is not at the insertion point then remove/move up to it\n        if (bestMatch !== insertionPoint) {\n          let cursor: Node | null = insertionPoint\n          // Remove nodes between the start and end nodes\n          while (cursor && cursor !== bestMatch) {\n            const tempNode = cursor\n            cursor = cursor.nextSibling\n            removeNode(tempNode)\n          }\n        }\n        morphNode(bestMatch, newChild)\n        insertionPoint = bestMatch.nextSibling\n        continue\n      }\n    }\n\n    // if the matching node is elsewhere in the original content\n    if (newChild instanceof Element && ctxPersistentIds.has(newChild.id)) {\n      // move it and all its children here and morph, will always be found\n      // Search for an element by ID within the document and pantry, and move it using moveBefore.\n      const movedChild = document.getElementById(newChild.id) as Element\n\n      // Removes an element from its ancestors' ID maps.\n      // This is needed when an element is moved from the \"future\" via `moveBeforeId`.\n      // Otherwise, its erstwhile ancestors could be mistakenly moved to the pantry rather than being deleted,\n      // preventing their removal hooks from being called.\n      let current = movedChild\n      while ((current = current.parentNode as Element)) {\n        const idSet = ctxIdMap.get(current)\n        if (idSet) {\n          idSet.delete(newChild.id)\n          if (!idSet.size) {\n            ctxIdMap.delete(current)\n          }\n        }\n      }\n\n      moveBefore(oldParent, movedChild, insertionPoint)\n      morphNode(movedChild, newChild)\n      insertionPoint = movedChild.nextSibling\n      continue\n    }\n\n    // This performs the action of inserting a new node while handling situations where the node contains\n    // elements with persistent IDs and possible state info we can still preserve by moving in and then morphing\n    if (ctxIdMap.has(newChild)) {\n      // node has children with IDs with possible state so create a dummy elt of same type and apply full morph algorithm\n      const newEmptyChild = document.createElement(\n        (newChild as Element).tagName,\n      )\n      oldParent.insertBefore(newEmptyChild, insertionPoint)\n      morphNode(newEmptyChild, newChild)\n      insertionPoint = newEmptyChild.nextSibling\n    } else {\n      // optimization: no id state to preserve so we can just insert a clone of the newChild and its descendants\n      const newClonedChild = document.importNode(newChild, true) // importNode to not mutate newParent\n      oldParent.insertBefore(newClonedChild, insertionPoint)\n      insertionPoint = newClonedChild.nextSibling\n    }\n  }\n\n  // remove any remaining old nodes that didn't match up with new content\n  while (insertionPoint && insertionPoint !== endPoint) {\n    const tempNode = insertionPoint\n    insertionPoint = insertionPoint.nextSibling\n    removeNode(tempNode)\n  }\n}\n\n// Scans forward from the startPoint to the endPoint looking for a match for the node.\n// It looks for an id set match first, then a soft match.\n// We abort soft matching if we find two future soft matches, to reduce churn.\nconst findBestMatch = (\n  node: Node,\n  startPoint: Node | null,\n  endPoint: Node | null,\n): Node | null => {\n  let bestMatch: Node | null | undefined = null\n  let nextSibling = node.nextSibling\n  let siblingSoftMatchCount = 0\n  let displaceMatchCount = 0\n\n  // Max ID matches we are willing to displace in our search\n  const nodeMatchCount = ctxIdMap.get(node)?.size || 0\n\n  let cursor = startPoint\n  while (cursor && cursor !== endPoint) {\n    // soft matching is a prerequisite for id set matching\n    if (isSoftMatch(cursor, node)) {\n      let isIdSetMatch = false\n      const oldSet = ctxIdMap.get(cursor)\n      const newSet = ctxIdMap.get(node)\n\n      if (newSet && oldSet) {\n        for (const id of oldSet) {\n          // a potential match is an id in the new and old nodes that\n          // has not already been merged into the DOM\n          // But the newNode content we call this on has not been\n          // merged yet and we don't allow duplicate IDs so it is simple\n          if (newSet.has(id)) {\n            isIdSetMatch = true\n            break\n          }\n        }\n      }\n\n      if (isIdSetMatch) {\n        return cursor // found an id set match, we're done!\n      }\n\n      // we haven\u2019t yet saved a soft match fallback\n      // the current soft match will hard match something else in the future, leave it\n      if (!bestMatch && !ctxIdMap.has(cursor)) {\n        // optimization: if node can't id set match, we can just return the soft match immediately\n        if (!nodeMatchCount) {\n          return cursor\n        }\n        // save this as the fallback if we get through the loop without finding a hard match\n        bestMatch = cursor\n      }\n    }\n\n    // check for IDs we may be displaced when matching\n    displaceMatchCount += ctxIdMap.get(cursor)?.size || 0\n    if (displaceMatchCount > nodeMatchCount) {\n      // if we are going to displace more IDs than the node contains then\n      // we do not have a good candidate for an ID match, so return\n      break\n    }\n\n    if (bestMatch === null && nextSibling && isSoftMatch(cursor, nextSibling)) {\n      // The next new node has a soft match with this node, so\n      // increment the count of future soft matches\n      siblingSoftMatchCount++\n      nextSibling = nextSibling.nextSibling\n\n      // If there are two future soft matches, block soft matching for this node to allow\n      // future siblings to soft match. This is to reduce churn in the DOM when an element\n      // is prepended.\n      if (siblingSoftMatchCount >= 2) {\n        bestMatch = undefined\n      }\n    }\n\n    cursor = cursor.nextSibling\n  }\n\n  return bestMatch || null\n}\n\n// ok to cast: if one is not element, `id` and `tagName` will be null and we'll just compare that.\nconst isSoftMatch = (oldNode: Node, newNode: Node): boolean =>\n  oldNode.nodeType === newNode.nodeType &&\n  (oldNode as Element).tagName === (newNode as Element).tagName &&\n  // If oldElt has an `id` with possible state and it doesn\u2019t match newElt.id then avoid morphing.\n  // We'll still match an anonymous node with an IDed newElt, though, because if it got this far,\n  // its not persistent, and new nodes can't have any hidden state.\n  (!(oldNode as Element).id ||\n    (oldNode as Element).id === (newNode as Element).id)\n\n// Gets rid of an unwanted DOM node; strategy depends on nature of its reuse:\n// - Persistent nodes will be moved to the pantry for later reuse\n// - Other nodes will have their hooks called, and then are removed\nconst removeNode = (node: Node): void => {\n  // are we going to id set match this later?\n  ctxIdMap.has(node)\n    ? // skip callbacks and move to pantry\n      moveBefore(ctxPantry, node, null)\n    : // remove for realsies\n      node.parentNode?.removeChild(node)\n}\n\n// Moves an element before another element within the same parent.\n// Uses the proposed `moveBefore` API if available (and working), otherwise falls back to `insertBefore`.\n// This is essentially a forward-compat wrapper.\nconst moveBefore: (parentNode: Node, node: Node, after: Node | null) => void =\n  // @ts-expect-error\n  removeNode.call.bind(ctxPantry.moveBefore ?? ctxPantry.insertBefore)\n\nconst aliasedPreserveAttr = aliasify('preserve-attr')\n\n// syncs the oldNode to the newNode, copying over all attributes and\n// inner element state from the newNode to the oldNode\nconst morphNode = (\n  oldNode: Node, // root node to merge content into\n  newNode: Node, // new content to merge\n): Node => {\n  const type = newNode.nodeType\n\n  // if is an element type, sync the attributes from the\n  // new node into the new node\n  if (type === 1 /* element type */) {\n    const oldElt = oldNode as Element\n    const newElt = newNode as Element\n    if (\n      oldElt.hasAttribute(aliasedIgnoreMorph) &&\n      newElt.hasAttribute(aliasedIgnoreMorph)\n    ) {\n      return oldNode\n    }\n\n    //  many bothans died to bring us this information:\n    //  https://github.com/patrick-steele-idem/morphdom/blob/master/src/specialElHandlers.js\n    //  https://github.com/choojs/nanomorph/blob/master/lib/morph.js#L113\n    if (\n      oldElt instanceof HTMLInputElement &&\n      newElt instanceof HTMLInputElement &&\n      newElt.type !== 'file'\n    ) {\n      // https://github.com/bigskysoftware/idiomorph/issues/27\n      // | old input value | new input value  | behaviour                              |\n      // | --------------- | ---------------- | -------------------------------------- |\n      // | `null`          | `null`           | preserve old input value               |\n      // | some value      | the same value   | preserve old input value               |\n      // | some value      | `null`           | set old input value to `\"\"`            |\n      // | `null`          | some value       | set old input value to new input value |\n      // | some value      | some other value | set old input value to new input value |\n      if (newElt.getAttribute('value') !== oldElt.getAttribute('value')) {\n        oldElt.value = newElt.getAttribute('value') ?? ''\n      }\n    } else if (\n      oldElt instanceof HTMLTextAreaElement &&\n      newElt instanceof HTMLTextAreaElement\n    ) {\n      if (newElt.value !== oldElt.value) {\n        oldElt.value = newElt.value\n      }\n      if (oldElt.firstChild && oldElt.firstChild.nodeValue !== newElt.value) {\n        oldElt.firstChild.nodeValue = newElt.value\n      }\n    }\n\n    const preserveAttrs = (\n      (newNode as HTMLElement).getAttribute(aliasedPreserveAttr) ?? ''\n    ).split(' ')\n\n    for (const { name, value } of newElt.attributes) {\n      if (\n        oldElt.getAttribute(name) !== value &&\n        !preserveAttrs.includes(name)\n      ) {\n        oldElt.setAttribute(name, value)\n      }\n    }\n\n    for (let i = oldElt.attributes.length - 1; i >= 0; i--) {\n      const { name } = oldElt.attributes[i]!\n      if (!newElt.hasAttribute(name) && !preserveAttrs.includes(name)) {\n        oldElt.removeAttribute(name)\n      }\n    }\n\n    if (!oldElt.isEqualNode(newElt)) {\n      morphChildren(oldElt, newElt)\n    }\n  }\n\n  if (type === 8 /* comment */ || type === 3 /* text */) {\n    if (oldNode.nodeValue !== newNode.nodeValue) {\n      oldNode.nodeValue = newNode.nodeValue\n    }\n  }\n\n  return oldNode\n}\n\n// A bottom-up algorithm that populates a map of Element -> IdSet.\n// The ID set for a given element is the set of all IDs contained within its subtree.\n// As an optimization, we filter these IDs through the given list of persistent IDs,\n// because we don't need to bother considering IDed elements that won't be in the new content.\nconst populateIdMapWithTree = (\n  root: Element | ShadowRoot | null,\n  elements: Iterable<Element>,\n): void => {\n  for (const elt of elements) {\n    if (ctxPersistentIds.has(elt.id)) {\n      let current: Element | null = elt\n      // walk up the parent hierarchy of that element, adding the ID of element to the parent's ID set\n      while (current && current !== root) {\n        let idSet = ctxIdMap.get(current)\n        // if the ID set doesn\u2019t exist, create it and insert it in the map\n        if (!idSet) {\n          idSet = new Set()\n          ctxIdMap.set(current, idSet)\n        }\n        idSet.add(elt.id)\n        current = current.parentElement\n      }\n    }\n  }\n}\n", "// Icon: ion:eye\n// Slug: Access signals without subscribing to changes.\n// Description: Allows accessing signals without subscribing to their changes in expressions.\n\nimport { action } from '@engine'\nimport { startPeeking, stopPeeking } from '@engine/signals'\n\naction({\n  name: 'peek',\n  apply(_, fn: () => any) {\n    startPeeking()\n    try {\n      return fn()\n    } finally {\n      stopPeeking()\n    }\n  },\n})\n", "// Icon: ion:checkmark-round\n// Slug: Sets the value of all matching signals.\n// Description: Sets the value of all matching signals (or all signals if no filter is used) to the expression provided in the first argument.\n\nimport { action } from '@engine'\nimport {\n  filtered,\n  mergePatch,\n  startPeeking,\n  stopPeeking,\n} from '@engine/signals'\nimport type { SignalFilterOptions } from '@engine/types'\nimport { updateLeaves } from '@utils/paths'\n\naction({\n  name: 'setAll',\n  apply(_, value: any, filter: SignalFilterOptions) {\n    // peek because in an effect you would be subscribing to signals and then setting them which\n    // would cause an infinite loop and why would you want to infinite loop on purpose\n    startPeeking()\n    const masked = filtered(filter)\n    updateLeaves(masked, () => value)\n    mergePatch(masked)\n    stopPeeking()\n  },\n})\n", "// Icon: material-symbols:toggle-off\n// Slug: Toggles the value of all matching signals.\n// Description: Toggles the boolean value of all matching signals (or all signals if no filter is used).\n\nimport { action } from '@engine'\nimport {\n  filtered,\n  mergePatch,\n  startPeeking,\n  stopPeeking,\n} from '@engine/signals'\nimport type { SignalFilterOptions } from '@engine/types'\nimport { updateLeaves } from '@utils/paths'\n\naction({\n  name: 'toggleAll',\n  apply(_, filter: SignalFilterOptions) {\n    // peek because in an effect you would be subscribing to signals and then setting them which\n    // would cause an infinite loop and why would you want to infinite loop on purpose\n    startPeeking()\n    const masked = filtered(filter)\n    updateLeaves(masked, (oldValue: any) => !oldValue)\n    mergePatch(masked)\n    stopPeeking()\n  },\n})\n", "// Icon: ion:eye\n// Slug: Access signals without subscribing to changes.\n// Description: Allows accessing signals without subscribing to their changes in expressions.\n\nimport { action } from '@engine'\nimport { DATASTAR_FETCH_EVENT } from '@engine/consts'\nimport { filtered } from '@engine/signals'\nimport type {\n  DatastarFetchEvent,\n  HTMLOrSVG,\n  SignalFilterOptions,\n} from '@engine/types'\nimport { kebab } from '@utils/text'\n\nconst fetchAbortControllers = new WeakMap<HTMLOrSVG, AbortController>()\n\nconst createHttpMethod = (name: string, method: string): void =>\n  action({\n    name,\n    apply: async (\n      { el, evt, error },\n      url: string,\n      {\n        selector,\n        headers: userHeaders,\n        contentType = 'json',\n        filterSignals: { include = /.*/, exclude = /(^|\\.)_/ } = {},\n        openWhenHidden = false,\n        retryInterval = 1000,\n        retryScaler = 2,\n        retryMaxWaitMs = 30_000,\n        retryMaxCount = 10,\n        requestCancellation = 'auto',\n      }: FetchArgs = {},\n    ) => {\n      const controller =\n        requestCancellation instanceof AbortController\n          ? requestCancellation\n          : new AbortController()\n      const isDisabled = requestCancellation === 'disabled'\n      if (!isDisabled) {\n        const oldController = fetchAbortControllers.get(el)\n        if (oldController) {\n          oldController.abort()\n          // wait one tick for FINISHED to fire\n          await Promise.resolve()\n        }\n      }\n\n      if (!isDisabled && !(requestCancellation instanceof AbortController)) {\n        fetchAbortControllers.set(el, controller)\n      }\n\n      try {\n        const observer = new MutationObserver((mutations) => {\n          for (const mutation of mutations) {\n            for (const removed of mutation.removedNodes) {\n              if (removed === el) {\n                controller.abort()\n                cleanupFn()\n              }\n            }\n          }\n        })\n        if (el.parentNode) {\n          observer.observe(el.parentNode, { childList: true })\n        }\n\n        let cleanupFn = () => {\n          observer.disconnect()\n        }\n\n        try {\n          if (!url?.length) {\n            throw error('FetchNoUrlProvided', { action })\n          }\n\n          const initialHeaders: Record<string, any> = {\n            Accept: 'text/event-stream, text/html, application/json',\n            'Datastar-Request': true,\n          }\n          if (contentType === 'json') {\n            initialHeaders['Content-Type'] = 'application/json'\n          }\n          const headers = Object.assign({}, initialHeaders, userHeaders)\n\n          // We ignore the content-type header if using form data\n          // if missing the boundary will be set automatically\n\n          const req: FetchEventSourceInit = {\n            method,\n            headers,\n            openWhenHidden,\n            retryInterval,\n            retryScaler,\n            retryMaxWaitMs,\n            retryMaxCount,\n            signal: controller.signal,\n            onopen: async (response: Response) => {\n              if (response.status >= 400)\n                dispatchFetch(ERROR, el, { status: response.status.toString() })\n            },\n            onmessage: (evt) => {\n              if (!evt.event.startsWith('datastar')) return\n              const type = evt.event\n              const argsRawLines: Record<string, string[]> = {}\n\n              for (const line of evt.data.split('\\n')) {\n                const i = line.indexOf(' ')\n                const k = line.slice(0, i)\n                const v = line.slice(i + 1)\n                ;(argsRawLines[k] ||= []).push(v)\n              }\n\n              const argsRaw = Object.fromEntries(\n                Object.entries(argsRawLines).map(([k, v]) => [k, v.join('\\n')]),\n              )\n\n              dispatchFetch(type, el, argsRaw)\n            },\n            onerror: (error) => {\n              if (isWrongContent(error)) {\n                // don't retry if the content-type is wrong\n                throw error('FetchExpectedTextEventStream', { url })\n              }\n              // do nothing and it will retry\n              if (error) {\n                console.error(error.message)\n                dispatchFetch(RETRYING, el, { message: error.message })\n              }\n            },\n          }\n\n          const urlInstance = new URL(url, document.baseURI)\n          const queryParams = new URLSearchParams(urlInstance.search)\n\n          if (contentType === 'json') {\n            const res = JSON.stringify(filtered({ include, exclude }))\n            if (method === 'GET') {\n              queryParams.set('datastar', res)\n            } else {\n              req.body = res\n            }\n          } else if (contentType === 'form') {\n            const formEl = (\n              selector ? document.querySelector(selector) : el.closest('form')\n            ) as HTMLFormElement\n            if (!formEl) {\n              throw error('FetchFormNotFound', { action, selector })\n            }\n\n            // Validate the form\n            if (!formEl.checkValidity()) {\n              formEl.reportValidity()\n              cleanupFn()\n              return\n            }\n\n            // Collect the form data\n\n            const formData = new FormData(formEl)\n            let submitter = el as HTMLElement | null\n\n            if (el === formEl && evt instanceof SubmitEvent) {\n              // Get the submitter from the event\n              submitter = evt.submitter\n            } else {\n              // Prevent the form being submitted\n              const preventDefault = (evt: Event) => evt.preventDefault()\n              formEl.addEventListener('submit', preventDefault)\n              cleanupFn = () => {\n                formEl.removeEventListener('submit', preventDefault)\n                observer.disconnect()\n              }\n            }\n\n            // Append the value of the form submitter if it is a button with a name\n            if (submitter instanceof HTMLButtonElement) {\n              const name = submitter.getAttribute('name')\n              if (name) formData.append(name, submitter.value)\n            }\n\n            const multipart =\n              formEl.getAttribute('enctype') === 'multipart/form-data'\n            // Leave the `Content-Type` header empty for multipart encoding so the browser can set it automatically with the correct boundary\n            if (!multipart) {\n              headers['Content-Type'] = 'application/x-www-form-urlencoded'\n            }\n\n            const formParams = new URLSearchParams(formData as any)\n            if (method === 'GET') {\n              for (const [key, value] of formParams) {\n                queryParams.append(key, value)\n              }\n            } else if (multipart) {\n              req.body = formData\n            } else {\n              req.body = formParams\n            }\n          } else {\n            throw error('FetchInvalidContentType', { action, contentType })\n          }\n\n          dispatchFetch(STARTED, el, {})\n          urlInstance.search = queryParams.toString()\n\n          try {\n            await fetchEventSource(urlInstance.toString(), el, req)\n          } catch (e: any) {\n            if (!isWrongContent(e)) {\n              throw error('FetchFailed', { method, url, error: e.message })\n            }\n            // exit gracefully and do nothing if the content-type is wrong\n            // this can happen if the client is sending a request\n            // where no response is expected, and they haven\u2019t\n            // set the content-type to text/event-stream\n          }\n        } finally {\n          dispatchFetch(FINISHED, el, {})\n          cleanupFn()\n        }\n      } finally {\n        if (fetchAbortControllers.get(el) === controller) {\n          fetchAbortControllers.delete(el)\n        }\n      }\n    },\n  })\n\ncreateHttpMethod('delete', 'DELETE')\ncreateHttpMethod('get', 'GET')\ncreateHttpMethod('patch', 'PATCH')\ncreateHttpMethod('post', 'POST')\ncreateHttpMethod('put', 'PUT')\n\nexport const STARTED = 'started'\nexport const FINISHED = 'finished'\nexport const ERROR = 'error'\nexport const RETRYING = 'retrying'\nexport const RETRIES_FAILED = 'retries-failed'\n\nconst dispatchFetch = (\n  type: string,\n  el: HTMLOrSVG,\n  argsRaw: Record<string, string>,\n) =>\n  document.dispatchEvent(\n    new CustomEvent<DatastarFetchEvent>(DATASTAR_FETCH_EVENT, {\n      detail: { type, el, argsRaw },\n    }),\n  )\n\nconst isWrongContent = (err: any) => `${err}`.includes('text/event-stream')\n\ntype ResponseOverrides =\n  | {\n      selector?: string\n      mode?: string\n      useViewTransition?: boolean\n    }\n  | {\n      onlyIfMissing?: boolean\n    }\n\nexport type FetchArgs = {\n  headers?: Record<string, string>\n  openWhenHidden?: boolean\n  retryInterval?: number\n  retryScaler?: number\n  retryMaxWaitMs?: number\n  retryMaxCount?: number\n  responseOverrides?: ResponseOverrides\n  contentType?: 'json' | 'form'\n  filterSignals?: SignalFilterOptions\n  selector?: string\n  requestCancellation?: 'auto' | 'disabled' | AbortController\n}\n\n// Below originally from https://github.com/Azure/fetch-event-source/blob/main/LICENSE\n\n/**\n * Represents a message sent in an event stream\n * https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events/Using_server-sent_events#Event_stream_format\n */\n\ninterface EventSourceMessage {\n  id: string\n  event: string\n  data: string\n  retry?: number\n}\n\n/**\n * Converts a ReadableStream into a callback pattern.\n * @param stream The input ReadableStream.\n * @param onChunk A function that will be called on each new byte chunk in the stream.\n * @returns {Promise<void>} A promise that will be resolved when the stream closes.\n */\nconst getBytes = async (\n  stream: ReadableStream<Uint8Array>,\n  onChunk: (arr: Uint8Array) => void,\n): Promise<void> => {\n  const reader = stream.getReader()\n  let result = await reader.read()\n  while (!result.done) {\n    onChunk(result.value)\n    result = await reader.read()\n  }\n}\n\nconst getLines = (onLine: (line: Uint8Array, fieldLength: number) => void) => {\n  let buffer: Uint8Array | undefined\n  let position: number // current read position\n  let fieldLength: number // length of the `field` portion of the line\n  let discardTrailingNewline = false\n\n  // return a function that can process each incoming byte chunk:\n  return (arr: Uint8Array) => {\n    if (!buffer) {\n      buffer = arr\n      position = 0\n      fieldLength = -1\n    } else {\n      // we're still parsing the old line. Append the new bytes into buffer:\n      buffer = concat(buffer, arr)\n    }\n\n    const bufLength = buffer.length\n    let lineStart = 0 // index where the current line starts\n    while (position < bufLength) {\n      if (discardTrailingNewline) {\n        if (buffer[position] === 10) lineStart = ++position // skip to next char\n        discardTrailingNewline = false\n      }\n\n      // start looking forward till the end of line:\n      let lineEnd = -1 // index of the \\r or \\n char\n      for (; position < bufLength && lineEnd === -1; ++position) {\n        switch (buffer[position]) {\n          case 58: // :\n            if (fieldLength === -1) {\n              // first colon in line\n              fieldLength = position - lineStart\n            }\n            break\n          // @ts-expect-error:7029 \\r case below should fallthrough to \\n:\n          // biome-ignore lint/suspicious/noFallthroughSwitchClause: intentional fallthrough for CR to LF\n          case 13: // \\r\n            discardTrailingNewline = true\n          case 10: // \\n\n            lineEnd = position\n            break\n        }\n      }\n\n      if (lineEnd === -1) break // Wait for the next arr and then continue parsing\n\n      // we've reached the line end, send it out:\n      onLine(buffer.subarray(lineStart, lineEnd), fieldLength)\n      lineStart = position // we're now on the next line\n      fieldLength = -1\n    }\n\n    if (lineStart === bufLength)\n      buffer = undefined // we've finished reading it\n    else if (lineStart) {\n      // Create a new view into buffer beginning at lineStart so we don't\n      // need to copy over the previous lines when we get the new arr:\n      buffer = buffer.subarray(lineStart)\n      position -= lineStart\n    }\n  }\n}\n\nconst getMessages = (\n  onId: (id: string) => void,\n  onRetry: (retry: number) => void,\n  onMessage?: (msg: EventSourceMessage) => void,\n): ((line: Uint8Array, fieldLength: number) => void) => {\n  let message = newMessage()\n  const decoder = new TextDecoder()\n\n  // return a function that can process each incoming line buffer:\n  return (line, fieldLength) => {\n    if (!line.length) {\n      // empty line denotes end of message. Trigger the callback and start a new message:\n      onMessage?.(message)\n      message = newMessage()\n    } else if (fieldLength > 0) {\n      // exclude comments and lines with no values\n      // line is of format \"<field>:<value>\" or \"<field>: <value>\"\n      // https://html.spec.whatwg.org/multipage/server-sent-events.html#event-stream-interpretation\n      const field = decoder.decode(line.subarray(0, fieldLength))\n      const valueOffset = fieldLength + (line[fieldLength + 1] === 32 ? 2 : 1)\n      const value = decoder.decode(line.subarray(valueOffset))\n\n      switch (field) {\n        case 'data':\n          message.data = message.data ? `${message.data}\\n${value}` : value\n          break\n        case 'event':\n          message.event = value\n          break\n        case 'id':\n          onId((message.id = value))\n          break\n        case 'retry': {\n          const retry = +value\n          if (!Number.isNaN(retry)) {\n            // per spec, ignore non-integers\n            onRetry((message.retry = retry))\n          }\n          break\n        }\n      }\n    }\n  }\n}\n\nconst concat = (a: Uint8Array, b: Uint8Array) => {\n  const res = new Uint8Array(a.length + b.length)\n  res.set(a)\n  res.set(b, a.length)\n  return res\n}\n\nconst newMessage = (): EventSourceMessage => ({\n  // data, event, and id must be initialized to empty strings:\n  // https://html.spec.whatwg.org/multipage/server-sent-events.html#event-stream-interpretation\n  // retry should be initialized to undefined so we return a consistent shape\n  // to the js engine all the time: https://mathiasbynens.be/notes/shapes-ics#takeaways\n  data: '',\n  event: '',\n  id: '',\n  retry: undefined,\n})\n\ntype FetchEventSourceInit = RequestInit & {\n  headers?: Record<string, string>\n  onopen?: (response: Response) => Promise<void>\n  onmessage?: (ev: EventSourceMessage) => void\n  onclose?: () => void\n  onerror?: (err: any) => number | null | undefined | void\n  openWhenHidden?: boolean\n  fetch?: typeof fetch\n  retryInterval?: number\n  retryScaler?: number\n  retryMaxWaitMs?: number\n  retryMaxCount?: number\n  overrides?: ResponseOverrides\n}\n\nconst fetchEventSource = (\n  input: RequestInfo,\n  el: HTMLOrSVG,\n  {\n    signal: inputSignal,\n    headers: inputHeaders,\n    onopen: inputOnOpen,\n    onmessage,\n    onclose,\n    onerror,\n    openWhenHidden,\n    fetch: inputFetch,\n    retryInterval = 1_000,\n    retryScaler = 2,\n    retryMaxWaitMs = 30_000,\n    retryMaxCount = 10,\n    overrides,\n    ...rest\n  }: FetchEventSourceInit,\n): Promise<void> => {\n  return new Promise<void>((resolve, reject) => {\n    // make a copy of the input headers since we may modify it below:\n    const headers: Record<string, string> = {\n      ...inputHeaders,\n    }\n\n    let curRequestController: AbortController\n    const onVisibilityChange = () => {\n      curRequestController.abort() // close existing request on every visibility change\n      if (!document.hidden) create() // page is now visible again, recreate request.\n    }\n\n    if (!openWhenHidden) {\n      document.addEventListener('visibilitychange', onVisibilityChange)\n    }\n\n    let retryTimer = 0\n    const dispose = () => {\n      document.removeEventListener('visibilitychange', onVisibilityChange)\n      clearTimeout(retryTimer)\n      curRequestController.abort()\n    }\n\n    // if the incoming signal aborts, dispose resources and resolve:\n    inputSignal?.addEventListener('abort', () => {\n      dispose()\n      resolve() // don't waste time constructing/logging errors\n    })\n\n    const fetch = inputFetch || window.fetch\n    const onopen = inputOnOpen || (() => {})\n\n    let retries = 0\n    let baseRetryInterval = retryInterval\n    const create = async () => {\n      curRequestController = new AbortController()\n      try {\n        const response = await fetch(input, {\n          ...rest,\n          headers,\n          signal: curRequestController.signal,\n        })\n\n        // on successful connection, reset the retry logic\n        retries = 0\n        retryInterval = baseRetryInterval\n\n        await onopen(response)\n\n        const dispatchNonSSE = async (\n          dispatchType: string,\n          response: Response,\n          name: string,\n          overrides?: ResponseOverrides,\n          ...argNames: string[]\n        ) => {\n          const argsRaw: Record<string, string> = {\n            [name]: await response.text(),\n          }\n          for (const n of argNames) {\n            let v = response.headers.get(`datastar-${kebab(n)}`)\n            if (overrides) {\n              const o = (overrides as any)[n]\n              if (o) v = typeof o === 'string' ? o : JSON.stringify(o)\n            }\n            if (v) argsRaw[n] = v\n          }\n\n          dispatchFetch(dispatchType, el, argsRaw)\n          dispose()\n          resolve()\n        }\n\n        const ct = response.headers.get('Content-Type')\n        if (ct?.includes('text/html')) {\n          return await dispatchNonSSE(\n            'datastar-patch-elements',\n            response,\n            'elements',\n            overrides,\n            'selector',\n            'mode',\n            'useViewTransition',\n          )\n        }\n\n        if (ct?.includes('application/json')) {\n          return await dispatchNonSSE(\n            'datastar-patch-signals',\n            response,\n            'signals',\n            overrides,\n            'onlyIfMissing',\n          )\n        }\n\n        if (ct?.includes('text/javascript')) {\n          const script = document.createElement('script')\n          const scriptAttributesHeader = response.headers.get(\n            'datastar-script-attributes',\n          )\n\n          if (scriptAttributesHeader) {\n            for (const [name, value] of Object.entries(\n              JSON.parse(scriptAttributesHeader),\n            )) {\n              script.setAttribute(name, value as string)\n            }\n          }\n          script.textContent = await response.text()\n          document.head.appendChild(script)\n          dispose()\n          return\n        }\n\n        await getBytes(\n          response.body!,\n          getLines(\n            getMessages(\n              (id) => {\n                if (id) {\n                  // signals the id and send it back on the next retry:\n                  headers['last-event-id'] = id\n                } else {\n                  // don't send the last-event-id header anymore:\n                  delete headers['last-event-id']\n                }\n              },\n              (retry) => {\n                baseRetryInterval = retryInterval = retry\n              },\n              onmessage,\n            ),\n          ),\n        )\n\n        onclose?.()\n        dispose()\n        resolve()\n      } catch (err) {\n        if (!curRequestController.signal.aborted) {\n          // if we haven\u2019t aborted the request ourselves:\n          try {\n            // check if we need to retry:\n            const interval: any = onerror?.(err) || retryInterval\n            clearTimeout(retryTimer)\n            retryTimer = setTimeout(create, interval)\n            retryInterval = Math.min(\n              retryInterval * retryScaler,\n              retryMaxWaitMs,\n            ) // exponential backoff\n            if (++retries >= retryMaxCount) {\n              dispatchFetch(RETRIES_FAILED, el, {})\n              // we should not retry anymore:\n              dispose()\n              reject('Max retries reached.') // Max retries reached, check your server or network connection\n            } else {\n              console.error(\n                `Datastar failed to reach ${input.toString()} retrying in ${interval}ms.`,\n              )\n            }\n          } catch (innerErr) {\n            // we should not retry anymore:\n            dispose()\n            reject(innerErr)\n          }\n        }\n      }\n    }\n\n    create()\n  })\n}\n", "// Icon: material-symbols:edit-attributes-outline\n// Slug: Syncs the value of an attribute with an expression.\n// Description: Sets the value of any HTML attribute to an expression, and keeps it in sync.\n\nimport { attribute } from '@engine'\nimport { effect } from '@engine/signals'\n\nattribute({\n  name: 'attr',\n  requirement: { value: 'must' },\n  returnsValue: true,\n  apply({ el, key, rx }) {\n    const syncAttr = (key: string, val: any) => {\n      if (val === '' || val === true) {\n        el.setAttribute(key, '')\n      } else if (val === false || val == null) {\n        el.removeAttribute(key)\n      } else if (typeof val === 'string') {\n        el.setAttribute(key, val)\n      } else {\n        el.setAttribute(key, JSON.stringify(val))\n      }\n    }\n\n    const update = key\n      ? () => {\n          observer.disconnect()\n          const val = rx() as string\n          syncAttr(key, val)\n          observer.observe(el, {\n            attributeFilter: [key],\n          })\n        }\n      : () => {\n          observer.disconnect()\n          const obj = rx() as Record<string, any>\n          const attributeFilter = Object.keys(obj)\n          for (const key of attributeFilter) {\n            syncAttr(key, obj[key])\n          }\n          observer.observe(el, {\n            attributeFilter,\n          })\n        }\n\n    const observer = new MutationObserver(update)\n    const cleanup = effect(update)\n\n    return () => {\n      observer.disconnect()\n      cleanup()\n    }\n  },\n})\n", "// Icon: akar-icons:link-chain\n// Slug: Creates a signal with two-way data binding.\n// Description: Creates a signal (if one doesn\u2019t already exist) and sets up two-way data binding between it and an element\u2019s value.\n\nimport { attribute } from '@engine'\nimport { effect, getPath, mergePaths } from '@engine/signals'\nimport type { Paths } from '@engine/types'\nimport { aliasify, modifyCasing } from '@utils/text'\n\ntype SignalFile = {\n  name: string\n  contents: string\n  mime: string\n}\n\nconst dataURIRegex = /^data:(?<mime>[^;]+);base64,(?<contents>.*)$/\nconst empty = Symbol('empty')\n\nconst aliasedBind = aliasify('bind')\n\nattribute({\n  name: 'bind',\n  requirement: 'exclusive',\n  apply({ el, key, mods, value, error }) {\n    const signalName = key != null ? modifyCasing(key, mods) : value\n\n    let get = (el: any, type: string) =>\n      type === 'number' ? +el.value : el.value\n\n    let set = (value: any) => {\n      ;(el as HTMLInputElement).value = `${value}`\n    }\n\n    if (el instanceof HTMLInputElement) {\n      switch (el.type) {\n        case 'range':\n        case 'number':\n          get = (el: any, type: string) =>\n            type === 'string' ? el.value : +el.value\n          break\n\n        case 'checkbox':\n          get = (el: HTMLInputElement, type: string) => {\n            if (el.value !== 'on') {\n              if (type === 'boolean') {\n                return el.checked\n              } else {\n                return el.checked ? el.value : ''\n              }\n            } else {\n              if (type === 'string') {\n                return el.checked ? el.value : ''\n              } else {\n                return el.checked\n              }\n            }\n          }\n          set = (value: string | boolean) => {\n            el.checked = typeof value === 'string' ? value === el.value : value\n          }\n          break\n\n        case 'radio':\n          // Set up radio button name attribute if not present\n          if (!el.getAttribute('name')?.length) {\n            el.setAttribute('name', signalName)\n          }\n\n          get = (el: HTMLInputElement, type: string) =>\n            el.checked ? (type === 'number' ? +el.value : el.value) : empty\n          set = (value: string | number) => {\n            el.checked =\n              value === (typeof value === 'number' ? +el.value : el.value)\n          }\n          break\n        case 'file': {\n          const syncSignal = () => {\n            const files = [...(el.files || [])]\n            const signalFiles: SignalFile[] = []\n            Promise.all(\n              files.map(\n                (f) =>\n                  new Promise<void>((resolve) => {\n                    const reader = new FileReader()\n                    reader.onload = () => {\n                      if (typeof reader.result !== 'string') {\n                        throw error('InvalidFileResultType', {\n                          resultType: typeof reader.result,\n                        })\n                      }\n                      const match = reader.result.match(dataURIRegex)\n                      if (!match?.groups) {\n                        throw error('InvalidDataUri', {\n                          result: reader.result,\n                        })\n                      }\n                      signalFiles.push({\n                        name: f.name,\n                        contents: match.groups.contents,\n                        mime: match.groups.mime,\n                      })\n                    }\n                    reader.onloadend = () => resolve()\n                    reader.readAsDataURL(f)\n                  }),\n              ),\n            ).then(() => {\n              mergePaths([[signalName, signalFiles]])\n            })\n          }\n\n          el.addEventListener('change', syncSignal)\n          el.addEventListener('input', syncSignal)\n\n          return () => {\n            el.removeEventListener('change', syncSignal)\n            el.removeEventListener('input', syncSignal)\n          }\n        }\n      }\n    } else if (el instanceof HTMLSelectElement) {\n      if (el.multiple) {\n        const typeMap = new Map<string, string>()\n        get = (el: HTMLSelectElement) =>\n          [...el.selectedOptions].map((option) => {\n            const type = typeMap.get(option.value)\n            return type === 'string' || type == null\n              ? option.value\n              : +option.value\n          })\n\n        set = (value: (string | number)[]) => {\n          for (const option of el.options) {\n            if (value.includes(option.value)) {\n              typeMap.set(option.value, 'string')\n              option.selected = true\n            } else if (value.includes(+option.value)) {\n              typeMap.set(option.value, 'number')\n              option.selected = true\n            } else {\n              option.selected = false\n            }\n          }\n        }\n      }\n    } else if (el instanceof HTMLTextAreaElement) {\n      // default case\n    } else {\n      // web component\n      get = (el: Element) =>\n        'value' in el ? el.value : el.getAttribute('value')\n      set = (value: any) => {\n        if ('value' in el) {\n          el.value = value\n        } else {\n          el.setAttribute('value', value)\n        }\n      }\n    }\n\n    const initialValue = getPath(signalName)\n    const type = typeof initialValue\n\n    let path = signalName\n    if (\n      Array.isArray(initialValue) &&\n      !(el instanceof HTMLSelectElement && el.multiple)\n    ) {\n      const signalNameKebab = key ? key : value!\n      const inputs = document.querySelectorAll(\n        `[${aliasedBind}\\\\:${CSS.escape(signalNameKebab)}],[${aliasedBind}=\"${CSS.escape(signalNameKebab)}\"]`,\n      ) as NodeListOf<HTMLInputElement>\n\n      const paths: Paths = []\n      let i = 0\n      for (const input of inputs) {\n        paths.push([`${path}.${i}`, get(input, 'none')])\n\n        if (el === input) {\n          break\n        }\n        i++\n      }\n      mergePaths(paths, { ifMissing: true })\n      path = `${path}.${i}`\n    } else {\n      mergePaths([[path, get(el, type)]], {\n        ifMissing: true,\n      })\n    }\n\n    const syncSignal = () => {\n      const signalValue = getPath(path)\n      if (signalValue != null) {\n        const value = get(el, typeof signalValue)\n        if (value !== empty) {\n          mergePaths([[path, value]])\n        }\n      }\n    }\n\n    el.addEventListener('input', syncSignal)\n    el.addEventListener('change', syncSignal)\n    const cleanup = effect(() => {\n      set(getPath(path))\n    })\n\n    return () => {\n      cleanup()\n      el.removeEventListener('input', syncSignal)\n      el.removeEventListener('change', syncSignal)\n    }\n  },\n})\n", "// Icon: ic:baseline-format-paint\n// Slug: Adds or removes a class based on an expression.\n// Description: Adds or removes a class to or from an element based on an expression.\n\nimport { attribute } from '@engine'\nimport { effect } from '@engine/signals'\nimport { modifyCasing } from '@utils/text'\n\nattribute({\n  name: 'class',\n  requirement: {\n    value: 'must',\n  },\n  returnsValue: true,\n  apply({ key, el, mods, rx }) {\n    if (key) {\n      key = modifyCasing(key, mods, 'kebab')\n    }\n\n    const callback = () => {\n      observer.disconnect()\n\n      const classes = key\n        ? { [key]: rx() as boolean }\n        : (rx() as Record<string, boolean>)\n\n      for (const k in classes) {\n        const classNames = k.split(/\\s+/).filter((cn) => cn.length > 0)\n        if (classes[k]) {\n          for (const name of classNames) {\n            if (!el.classList.contains(name)) {\n              el.classList.add(name)\n            }\n          }\n        } else {\n          for (const name of classNames) {\n            if (el.classList.contains(name)) {\n              el.classList.remove(name)\n            }\n          }\n        }\n      }\n\n      observer.observe(el, { attributeFilter: ['class'] })\n    }\n\n    const observer = new MutationObserver(callback)\n    const cleanup = effect(callback)\n\n    return () => {\n      observer.disconnect()\n      cleanup()\n\n      const classes = key\n        ? { [key]: rx() as boolean }\n        : (rx() as Record<string, boolean>)\n\n      for (const k in classes) {\n        const classNames = k.split(/\\s+/).filter((cn) => cn.length > 0)\n        for (const name of classNames) {\n          el.classList.remove(name)\n        }\n      }\n    }\n  },\n})\n", "// Icon: streamline-ultimate:wifi-signal-2\n// Slug: Creates a computed signal.\n// Description: Creates a signal that is computed based on an expression.\n\nimport { attribute } from '@engine'\nimport { computed, mergePaths, mergePatch } from '@engine/signals'\nimport { modifyCasing } from '@utils/text'\nimport { updateLeaves } from '@utils/paths'\n\nattribute({\n  name: 'computed',\n  requirement: {\n    value: 'must',\n  },\n  returnsValue: true,\n  apply({ key, mods, rx, error }) {\n    if (key) {\n      mergePaths([[modifyCasing(key, mods), computed(rx)]])\n    } else {\n      const patch = Object.assign({}, rx() as Record<string, () => any>)\n      updateLeaves(patch, (old) => {\n        if (typeof old === 'function') {\n          return computed(old)\n        } else {\n          throw error('ComputedExpectedFunction')\n        }\n      })\n      mergePatch(patch)\n    }\n  },\n})\n", "// Icon: oui:security-signal\n// Slug: Executes an expression when signals change.\n// Description: Executes an expression on page load and whenever any signals in the expression change.\n\nimport { attribute } from '@engine'\nimport { effect } from '@engine/signals'\n\nattribute({\n  name: 'effect',\n  requirement: {\n    key: 'denied',\n    value: 'must',\n  },\n  apply: ({ rx }) => effect(rx),\n})\n", "// Icon: streamline:signal-loading-remix\n// Slug: Creates an indicator for whether an SSE request is in flight.\n// Description: Creates a signal and sets its value to `true` while an SSE request request is in flight, otherwise `false`.\n\nimport { attribute } from '@engine'\nimport { DATASTAR_FETCH_EVENT } from '@engine/consts'\nimport { mergePaths } from '@engine/signals'\nimport type { DatastarFetchEvent } from '@engine/types'\nimport { FINISHED, STARTED } from '@plugins/actions/fetch'\nimport { modifyCasing } from '@utils/text'\n\nattribute({\n  name: 'indicator',\n  requirement: 'exclusive',\n  apply({ el, key, mods, value }) {\n    const signalName = key != null ? modifyCasing(key, mods) : value\n\n    mergePaths([[signalName, false]])\n\n    const watcher = ((event: CustomEvent<DatastarFetchEvent>) => {\n      const { type, el: elt } = event.detail\n      if (elt !== el) {\n        return\n      }\n      switch (type) {\n        case STARTED:\n          mergePaths([[signalName, true]])\n          break\n        case FINISHED:\n          mergePaths([[signalName, false]])\n          break\n      }\n    }) as EventListener\n    document.addEventListener(DATASTAR_FETCH_EVENT, watcher)\n    return () => {\n      mergePaths([[signalName, false]])\n      document.removeEventListener(DATASTAR_FETCH_EVENT, watcher)\n    }\n  },\n})\n", "// Icon: si:json-fill\n// Slug: Outputs a JSON stringified version of signals.\n// Description: Sets the text content of an element to a reactive JSON stringified version of signals.\n\nimport { attribute } from '@engine'\nimport { effect, filtered } from '@engine/signals'\nimport type { SignalFilterOptions } from '@engine/types'\nimport { jsStrToObject } from '@utils/text'\n\nattribute({\n  name: 'json-signals',\n  requirement: {\n    key: 'denied',\n  },\n  apply({ el, value, mods }) {\n    const spaces = mods.has('terse') ? 0 : 2\n    let filters: SignalFilterOptions = {}\n    if (value) {\n      filters = jsStrToObject(value)\n    }\n\n    const callback = () => {\n      observer.disconnect()\n      el.textContent = JSON.stringify(filtered(filters), null, spaces)\n      observer.observe(el, {\n        childList: true,\n        characterData: true,\n        subtree: true,\n      })\n    }\n    const observer = new MutationObserver(callback)\n    const cleanup = effect(callback)\n\n    return () => {\n      observer.disconnect()\n      cleanup()\n    }\n  },\n})\n", "export const tagToMs = (args: Set<string>) => {\n  if (!args || args.size <= 0) return 0\n  for (const arg of args) {\n    if (arg.endsWith('ms')) {\n      return +arg.replace('ms', '')\n    }\n    if (arg.endsWith('s')) {\n      return +arg.replace('s', '') * 1000\n    }\n    try {\n      return Number.parseFloat(arg)\n    } catch (_) {}\n  }\n  return 0\n}\n\nexport const tagHas = (\n  tags: Set<string>,\n  tag: string,\n  defaultValue = false,\n) => {\n  if (!tags) return defaultValue\n  return tags.has(tag.toLowerCase())\n}\n\nexport const tagFirst = (tags?: Set<string>, defaultValue = ''): string => {\n  if (tags && tags.size > 0) {\n    for (const tag of tags) {\n      return tag\n    }\n  }\n  return defaultValue\n}\n", "import type { EventCallbackHandler, Modifiers } from '@engine/types'\nimport { tagHas, tagToMs } from '@utils/tags'\n\nexport const delay = (\n  callback: EventCallbackHandler,\n  wait: number,\n): EventCallbackHandler => {\n  return (...args: any[]) => {\n    setTimeout(() => {\n      callback(...args)\n    }, wait)\n  }\n}\n\nexport const debounce = (\n  callback: EventCallbackHandler,\n  wait: number,\n  leading = false,\n  trailing = true,\n): EventCallbackHandler => {\n  let timer = 0\n  return (...args: any[]) => {\n    timer && clearTimeout(timer)\n\n    if (leading && !timer) {\n      callback(...args)\n    }\n\n    timer = setTimeout(() => {\n      if (trailing) {\n        callback(...args)\n      }\n      timer && clearTimeout(timer)\n      timer = 0\n    }, wait)\n  }\n}\n\nexport const throttle = (\n  callback: EventCallbackHandler,\n  wait: number,\n  leading = true,\n  trailing = false,\n): EventCallbackHandler => {\n  let waiting = false\n\n  return (...args: any[]) => {\n    if (waiting) return\n\n    if (leading) {\n      callback(...args)\n    }\n\n    waiting = true\n    setTimeout(() => {\n      if (trailing) {\n        callback(...args)\n      }\n      waiting = false\n    }, wait)\n  }\n}\n\nexport const modifyTiming = (\n  callback: EventCallbackHandler,\n  mods: Modifiers,\n): EventCallbackHandler => {\n  const delayArgs = mods.get('delay')\n  if (delayArgs) {\n    const wait = tagToMs(delayArgs)\n    callback = delay(callback, wait)\n  }\n\n  const debounceArgs = mods.get('debounce')\n  if (debounceArgs) {\n    const wait = tagToMs(debounceArgs)\n    const leading = tagHas(debounceArgs, 'leading', false)\n    const trailing = !tagHas(debounceArgs, 'notrailing', false)\n    callback = debounce(callback, wait, leading, trailing)\n  }\n\n  const throttleArgs = mods.get('throttle')\n  if (throttleArgs) {\n    const wait = tagToMs(throttleArgs)\n    const leading = !tagHas(throttleArgs, 'noleading', false)\n    const trailing = tagHas(throttleArgs, 'trailing', false)\n    callback = throttle(callback, wait, leading, trailing)\n  }\n\n  return callback\n}\n", "import type { EventCallbackHandler, Modifiers } from '@engine/types'\n\nexport const supportsViewTransitions = !!document.startViewTransition\n\nexport const modifyViewTransition = (\n  callback: EventCallbackHandler,\n  mods: Modifiers,\n): EventCallbackHandler => {\n  if (mods.has('viewtransition') && supportsViewTransitions) {\n    const cb = callback // I hate javascript\n    callback = (...args: any[]) =>\n      document.startViewTransition(() => cb(...args))\n  }\n\n  return callback\n}\n", "// Icon: material-symbols:mail\n// Slug: Attaches an event listener to an element.\n// Description: Attaches an event listener to an element, executing an expression whenever the event is triggered.\n\nimport { attribute } from '@engine'\nimport {\n  DATASTAR_FETCH_EVENT,\n  DATASTAR_SIGNAL_PATCH_EVENT,\n} from '@engine/consts'\nimport { beginBatch, endBatch } from '@engine/signals'\nimport { modifyCasing } from '@utils/text'\nimport { modifyTiming } from '@utils/timing'\nimport { modifyViewTransition } from '@utils/view-transitions'\n\nattribute({\n  name: 'on',\n  requirement: 'must',\n  argNames: ['evt'],\n  apply({ el, key, mods, rx }) {\n    let target: Element | Window | Document = el\n    if (mods.has('window')) target = window\n    let callback = (evt?: Event) => {\n      if (evt) {\n        if (mods.has('prevent')) {\n          evt.preventDefault()\n        }\n        if (mods.has('stop')) {\n          evt.stopPropagation()\n        }\n      }\n      beginBatch()\n      rx(evt)\n      endBatch()\n    }\n    callback = modifyViewTransition(callback, mods)\n    callback = modifyTiming(callback, mods)\n    const evtListOpts: AddEventListenerOptions = {\n      capture: mods.has('capture'),\n      passive: mods.has('passive'),\n      once: mods.has('once'),\n    }\n    if (mods.has('outside')) {\n      target = document\n      const cb = callback\n      callback = (evt?: Event) => {\n        if (!el.contains(evt?.target as HTMLElement)) {\n          cb(evt)\n        }\n      }\n    }\n    const eventName = modifyCasing(key, mods, 'kebab')\n    // Listen for Datastar events on the document\n    if (\n      eventName === DATASTAR_FETCH_EVENT ||\n      eventName === DATASTAR_SIGNAL_PATCH_EVENT\n    ) {\n      target = document\n    }\n    // Prevent default on form submit events\n    if (el instanceof HTMLFormElement && eventName === 'submit') {\n      const cb = callback\n      callback = (evt?: Event) => {\n        evt?.preventDefault()\n        cb(evt)\n      }\n    }\n    target.addEventListener(eventName, callback, evtListOpts)\n    return () => {\n      target.removeEventListener(eventName, callback)\n    }\n  },\n})\n", "// Icon: mdi-light:vector-intersection\n// Slug: Runs an expression on intersection.\n// Description: Runs an expression when the element intersects with the viewport.\n\nimport { attribute } from '@engine'\nimport { beginBatch, endBatch } from '@engine/signals'\nimport type { HTMLOrSVG } from '@engine/types'\nimport { modifyTiming } from '@utils/timing'\nimport { modifyViewTransition } from '@utils/view-transitions'\n\nconst once = new WeakSet<HTMLOrSVG>()\n\nattribute({\n  name: 'on-intersect',\n  requirement: {\n    key: 'denied',\n    value: 'must',\n  },\n  apply({ el, mods, rx }) {\n    let callback = () => {\n      beginBatch()\n      rx()\n      endBatch()\n    }\n    callback = modifyViewTransition(callback, mods)\n    callback = modifyTiming(callback, mods)\n    const options = { threshold: 0 }\n    if (mods.has('full')) {\n      options.threshold = 1\n    } else if (mods.has('half')) {\n      options.threshold = 0.5\n    }\n    let observer: IntersectionObserver | null = new IntersectionObserver(\n      (entries) => {\n        for (const entry of entries) {\n          if (entry.isIntersecting) {\n            callback()\n            if (observer && once.has(el)) {\n              observer.disconnect()\n            }\n          }\n        }\n      },\n      options,\n    )\n    observer.observe(el)\n    if (mods.has('once')) {\n      once.add(el)\n    }\n    return () => {\n      if (!mods.has('once')) {\n        once.delete(el)\n      }\n      if (observer) {\n        observer.disconnect()\n        observer = null\n      }\n    }\n  },\n})\n", "// Icon: material-symbols:timer-outline\n// Slug: Runs an expression at a regular interval.\n// Description: Runs an expression at a regular interval.\n\nimport { attribute } from '@engine'\nimport { beginBatch, endBatch } from '@engine/signals'\nimport { tagHas, tagToMs } from '@utils/tags'\nimport { modifyViewTransition } from '@utils/view-transitions'\n\nattribute({\n  name: 'on-interval',\n  requirement: {\n    key: 'denied',\n    value: 'must',\n  },\n  apply({ mods, rx }) {\n    let callback = () => {\n      beginBatch()\n      rx()\n      endBatch()\n    }\n    callback = modifyViewTransition(callback, mods)\n    let duration = 1000\n    const durationArgs = mods.get('duration')\n    if (durationArgs) {\n      duration = tagToMs(durationArgs)\n      const leading = tagHas(durationArgs, 'leading', false)\n      if (leading) {\n        callback()\n      }\n    }\n    const intervalId = setInterval(callback, duration)\n    return () => {\n      clearInterval(intervalId)\n    }\n  },\n})\n", "// Icon: material-symbols:timer-play-outline\n// Slug: Runs an expression when loaded into the DOM.\n// Description: Runs an expression when the element is loaded into the DOM.\n\nimport { attribute } from '@engine'\nimport { beginBatch, endBatch } from '@engine/signals'\nimport { tagToMs } from '@utils/tags'\nimport { delay } from '@utils/timing'\nimport { modifyViewTransition } from '@utils/view-transitions'\n\nattribute({\n  name: 'init',\n  requirement: {\n    key: 'denied',\n    value: 'must',\n  },\n  apply({ rx, mods }) {\n    let callback = () => {\n      beginBatch()\n      rx()\n      endBatch()\n    }\n    callback = modifyViewTransition(callback, mods)\n    let wait = 0\n    const delayArgs = mods.get('delay')\n    if (delayArgs) {\n      wait = tagToMs(delayArgs)\n      if (wait > 0) {\n        callback = delay(callback, wait)\n      }\n    }\n    callback()\n  },\n})\n", "// Icon: material-symbols:change-circle-outline\n// Slug: Runs an expression when signals are patched.\n// Description: Runs an expression whenever one or more signals are patched.\n\nimport { attribute } from '@engine'\nimport { DATASTAR_SIGNAL_PATCH_EVENT } from '@engine/consts'\nimport { beginBatch, endBatch, filtered } from '@engine/signals'\nimport type { JSONPatch, SignalFilterOptions } from '@engine/types'\nimport { isEmpty } from '@utils/paths'\nimport { jsStrToObject } from '@utils/text'\nimport { modifyTiming } from '@utils/timing'\n\nattribute({\n  name: 'on-signal-patch',\n  requirement: {\n    value: 'must',\n  },\n  argNames: ['patch'],\n  returnsValue: true,\n  apply({ el, key, mods, rx, error }) {\n    if (!!key && key !== 'filter') {\n      throw error('KeyNotAllowed')\n    }\n\n    // Look for data-on-signal-patch-filter data attribute\n    const filtersRaw = el.getAttribute('data-on-signal-patch-filter')\n    let filters: SignalFilterOptions = {}\n    if (filtersRaw) {\n      filters = jsStrToObject(filtersRaw)\n    }\n\n    const callback: EventListener = modifyTiming(\n      (evt: CustomEvent<JSONPatch>) => {\n        const watched = filtered(filters, evt.detail)\n        if (!isEmpty(watched)) {\n          beginBatch()\n          rx(watched)\n          endBatch()\n        }\n      },\n      mods,\n    )\n\n    document.addEventListener(DATASTAR_SIGNAL_PATCH_EVENT, callback)\n    return () => {\n      document.removeEventListener(DATASTAR_SIGNAL_PATCH_EVENT, callback)\n    }\n  },\n})\n", "// Icon: mdi:cursor-pointer\n// Slug: Creates a reference to an element.\n// Description: Creates a new signal that is a reference to the element on which the data attribute is placed.\n\nimport { attribute } from '@engine'\nimport { mergePaths } from '@engine/signals'\nimport { modifyCasing } from '@utils/text'\n\nattribute({\n  name: 'ref',\n  requirement: 'exclusive',\n  apply({ el, key, mods, value }) {\n    const signalName = key != null ? modifyCasing(key, mods) : value\n    mergePaths([[signalName, el]])\n  },\n})\n", "// Icon: streamline:interface-edit-view-eye-eyeball-open-view\n// Slug: Shows or hides an element.\n// Description: Shows or hides an element based on whether an expression evaluates to `true` or `false`.\n\nimport { attribute } from '@engine'\nimport { effect } from '@engine/signals'\n\nconst NONE = 'none'\nconst DISPLAY = 'display'\n\nattribute({\n  name: 'show',\n  requirement: {\n    key: 'denied',\n    value: 'must',\n  },\n  returnsValue: true,\n  apply({ el, rx }) {\n    const update = () => {\n      observer.disconnect()\n      const shouldShow = rx()\n      if (shouldShow) {\n        if (el.style.display === NONE) el.style.removeProperty(DISPLAY)\n      } else {\n        el.style.setProperty(DISPLAY, NONE)\n      }\n      observer.observe(el, { attributeFilter: ['style'] })\n    }\n    const observer = new MutationObserver(update)\n    const cleanup = effect(update)\n\n    return () => {\n      observer.disconnect()\n      cleanup()\n    }\n  },\n})\n", "// Icon: streamline:wifi-signal-full-remix\n// Slug: Patches signals into the existing signals.\n// Description: Patches (adds, updates or removes) one or more signals into the existing signals.\n\nimport { attribute } from '@engine'\nimport { mergePatch, mergePaths } from '@engine/signals'\nimport { modifyCasing } from '@utils/text'\n\nattribute({\n  name: 'signals',\n  returnsValue: true,\n  apply({ key, mods, rx }) {\n    const ifMissing = mods.has('ifmissing')\n\n    if (key) {\n      key = modifyCasing(key, mods)\n      mergePaths([[key, rx?.()]], { ifMissing })\n    } else {\n      const patch = Object.assign({}, rx?.() as Record<string, any>)\n      mergePatch(patch, { ifMissing })\n    }\n  },\n})\n", "// Icon: material-symbols:format-paint-outline\n// Slug: Sets inline styles on an element based on an expression.\n// Description: Sets CSS styles on an element using either key-based or object syntax, and keeps them in sync with reactive signals.\n\nimport { attribute } from '@engine'\nimport { effect } from '@engine/signals'\nimport { kebab } from '@utils/text'\n\nattribute({\n  name: 'style',\n  requirement: {\n    value: 'must',\n  },\n  returnsValue: true,\n  apply({ key, el, rx }) {\n    const { style } = el\n    const initialStyles = new Map<string, string>()\n\n    const apply = (prop: string, value: any) => {\n      const initial = initialStyles.get(prop)\n      if (!value && value !== 0) {\n        initial !== undefined &&\n          (initial\n            ? style.setProperty(prop, initial)\n            : style.removeProperty(prop))\n      } else {\n        initial === undefined &&\n          initialStyles.set(prop, style.getPropertyValue(prop))\n        style.setProperty(prop, String(value))\n      }\n    }\n\n    const update = () => {\n      observer.disconnect()\n\n      if (key) {\n        apply(key, rx())\n      } else {\n        const styles = rx() as Record<string, any>\n\n        for (const [prop, initial] of initialStyles) {\n          prop in styles ||\n            (initial\n              ? style.setProperty(prop, initial)\n              : style.removeProperty(prop))\n        }\n\n        for (const prop in styles) {\n          apply(kebab(prop), styles[prop])\n        }\n      }\n\n      observer.observe(el, { attributeFilter: ['style'] })\n    }\n\n    const observer = new MutationObserver(update)\n    const cleanup = effect(update)\n\n    return () => {\n      observer.disconnect()\n      cleanup()\n      for (const [prop, initial] of initialStyles) {\n        initial ? style.setProperty(prop, initial) : style.removeProperty(prop)\n      }\n    }\n  },\n})\n", "// Icon: icon-park-outline:text\n// Slug: Binds the text content of an element.\n// Description: Binds the text content of an element to an expression.\n\nimport { attribute } from '@engine'\nimport { effect } from '@engine/signals'\n\nattribute({\n  name: 'text',\n  requirement: {\n    key: 'denied',\n    value: 'must',\n  },\n  returnsValue: true,\n  apply({ el, rx }) {\n    const update = () => {\n      observer.disconnect()\n      el.textContent = `${rx()}`\n      observer.observe(el, {\n        childList: true,\n        characterData: true,\n        subtree: true,\n      })\n    }\n\n    const observer = new MutationObserver(update)\n    const cleanup = effect(update)\n\n    return () => {\n      observer.disconnect()\n      cleanup()\n    }\n  },\n})\n", "// Icon: material-symbols:cloud-download\n// Slug: Patches elements into the DOM.\n// Description: Patches elements into the DOM.\n\nimport { watcher } from '@engine'\nimport type { WatcherContext } from '@engine/types'\nimport { morph } from '@engine/morph'\nimport { supportsViewTransitions } from '@utils/view-transitions'\n\ntype PatchElementsMode =\n  | 'remove'\n  | 'outer'\n  | 'inner'\n  | 'replace'\n  | 'prepend'\n  | 'append'\n  | 'before'\n  | 'after'\n\ntype PatchElementsArgs = {\n  elements: string\n  mode: PatchElementsMode\n  selector: string\n  useViewTransition: boolean\n}\n\nwatcher({\n  name: 'datastar-patch-elements',\n  apply(\n    ctx,\n    { elements = '', selector = '', mode = 'outer', useViewTransition },\n  ) {\n    switch (mode) {\n      case 'remove':\n      case 'outer':\n      case 'inner':\n      case 'replace':\n      case 'prepend':\n      case 'append':\n      case 'before':\n      case 'after':\n        break\n      default:\n        throw ctx.error('PatchElementsInvalidMode', { mode })\n    }\n\n    if (!selector && mode !== 'outer' && mode !== 'replace') {\n      throw ctx.error('PatchElementsExpectedSelector')\n    }\n\n    const args2: PatchElementsArgs = {\n      mode,\n      selector,\n      elements,\n      useViewTransition: useViewTransition?.trim() === 'true',\n    }\n\n    if (supportsViewTransitions && useViewTransition) {\n      document.startViewTransition(() => onPatchElements(ctx, args2))\n    } else {\n      onPatchElements(ctx, args2)\n    }\n  },\n})\n\nconst onPatchElements = (\n  { error }: WatcherContext,\n  { elements, selector, mode }: PatchElementsArgs,\n) => {\n  const elementsWithSvgsRemoved = elements.replace(\n    /<svg(\\s[^>]*>|>)([\\s\\S]*?)<\\/svg>/gim,\n    '',\n  )\n  const hasHtml = /<\\/html>/.test(elementsWithSvgsRemoved)\n  const hasHead = /<\\/head>/.test(elementsWithSvgsRemoved)\n  const hasBody = /<\\/body>/.test(elementsWithSvgsRemoved)\n\n  const newDocument = new DOMParser().parseFromString(\n    hasHtml || hasHead || hasBody\n      ? elements\n      : `<body><template>${elements}</template></body>`,\n    'text/html',\n  )\n\n  let newContent = document.createDocumentFragment()\n  if (hasHtml) {\n    newContent.appendChild(newDocument.documentElement)\n  } else if (hasHead && hasBody) {\n    newContent.appendChild(newDocument.head)\n    newContent.appendChild(newDocument.body)\n  } else if (hasHead) {\n    newContent.appendChild(newDocument.head)\n  } else if (hasBody) {\n    newContent.appendChild(newDocument.body)\n  } else {\n    newContent = newDocument.querySelector('template')!.content\n  }\n\n  if (!selector && (mode === 'outer' || mode === 'replace')) {\n    for (const child of newContent.children) {\n      let target: Element\n      if (child instanceof HTMLHtmlElement) {\n        target = document.documentElement\n      } else if (child instanceof HTMLBodyElement) {\n        target = document.body\n      } else if (child instanceof HTMLHeadElement) {\n        target = document.head\n      } else {\n        target = document.getElementById(child.id)!\n        if (!target) {\n          console.warn(error('PatchElementsNoTargetsFound'), {\n            element: { id: child.id },\n          })\n          continue\n        }\n      }\n\n      applyToTargets(mode as PatchElementsMode, child, [target])\n    }\n  } else {\n    const targets = document.querySelectorAll(selector)\n    if (!targets.length) {\n      console.warn(error('PatchElementsNoTargetsFound'), { selector })\n      return\n    }\n\n    applyToTargets(mode as PatchElementsMode, newContent, targets)\n  }\n}\n\nconst scripts = new WeakSet<HTMLScriptElement>()\nfor (const script of document.querySelectorAll('script')) {\n  scripts.add(script)\n}\n\nconst execute = (target: Element): void => {\n  const elScripts =\n    target instanceof HTMLScriptElement\n      ? [target]\n      : target.querySelectorAll('script')\n  for (const old of elScripts) {\n    if (!scripts.has(old)) {\n      const script = document.createElement('script')\n      for (const { name, value } of old.attributes) {\n        script.setAttribute(name, value)\n      }\n      script.text = old.text\n      old.replaceWith(script)\n      scripts.add(script)\n    }\n  }\n}\n\nconst applyPatchMode = (\n  targets: Iterable<Element>,\n  element: DocumentFragment | Element,\n  action: string,\n) => {\n  for (const target of targets) {\n    const cloned = element.cloneNode(true) as Element\n    execute(cloned)\n    // @ts-expect-error\n    target[action](cloned)\n  }\n}\n\nconst applyToTargets = (\n  mode: PatchElementsMode,\n  element: DocumentFragment | Element,\n  targets: Iterable<Element>,\n) => {\n  switch (mode) {\n    case 'remove':\n      for (const target of targets) {\n        target.remove()\n      }\n      break\n    case 'outer':\n    case 'inner':\n      for (const target of targets) {\n        morph(target, element.cloneNode(true) as Element, mode)\n        execute(target)\n      }\n      break\n    case 'replace':\n      applyPatchMode(targets, element, 'replaceWith')\n      break\n    case 'prepend':\n    case 'append':\n    case 'before':\n    case 'after':\n      applyPatchMode(targets, element, mode)\n  }\n}\n", "// Icon: material-symbols:settings-input-antenna\n// Slug: Patches signals.\n// Description: Patches signals.\n\nimport { watcher } from '@engine'\nimport { mergePatch } from '@engine/signals'\nimport { jsStrToObject } from '@utils/text'\n\nwatcher({\n  name: 'datastar-patch-signals',\n  apply({ error }, { signals, onlyIfMissing }) {\n    if (signals) {\n      const ifMissing = onlyIfMissing?.trim() === 'true'\n      mergePatch(jsStrToObject(signals), { ifMissing })\n    } else {\n      throw error('PatchSignalsExpectedSignals')\n    }\n  },\n})\n"],
+  "mappings": 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+  "names": ["lol", "DSP", "DSS", "DATASTAR_FETCH_EVENT", "DATASTAR_SIGNAL_PATCH_EVENT", "kebab", "str", "snake", "str", "kebab", "jsStrToObject", "raw", "caseFns", "str", "x", "modifyCasing", "mods", "defaultCase", "c", "aliasify", "name", "hasOwn", "isPojo", "obj", "isEmpty", "prop", "hasOwn", "updateLeaves", "fn", "key", "val", "pathToObj", "paths", "result", "path", "value", "keys", "lastKey", "acc", "currentPatch", "queuedEffects", "batchDepth", "notifyIndex", "queuedEffectsLength", "prevSub", "activeSub", "version", "beginBatch", "endBatch", "flush", "dispatch", "startPeeking", "sub", "stopPeeking", "signal", "initialValue", "signalOper", "value_", "flags_", "computedSymbol", "computed", "getter", "c", "computedOper", "effect", "fn", "e", "fn_", "link", "effectOper", "run", "update", "updateComputed", "updateSignal", "startTracking", "oldValue", "endTracking", "s", "value", "notify", "flags", "subs", "subs_", "sub_", "checkDirty", "deps_", "dep", "dep_", "depFlags", "nextDep_", "propagate", "currentValue", "shallowPropagate", "unlink", "prevDep", "depsTail_", "nextDep", "version_", "subsTail_", "newLink", "prevDep_", "prevSub_", "nextSub_", "toRemove", "next", "stack", "top", "isValidLink", "subSubs", "nextSub", "prev_", "checkDepth", "dirty", "firstSub", "hasMultipleSubs", "checkLink", "getPath", "path", "result", "root", "split", "hasOwn", "deep", "prefix", "isArr", "isPojo", "deepObj", "key", "keys", "_", "prop", "newValue", "diff", "patch", "i", "detail", "pathToObj", "DATASTAR_SIGNAL_PATCH_EVENT", "mergePatch", "ifMissing", "mergeInner", "mergePaths", "paths", "options", "target", "targetParent", "toRegExp", "val", "filtered", "include", "exclude", "obj", "includeRe", "excludeRe", "node", "isHTMLOrSVG", "el", "url", "error", "ctx", "reason", "metadata", "e", "r", "snake", "q", "c", "actionPlugins", "attributePlugins", "watcherPlugins", "actions", "_", "prop", "removals", "queuedAttributes", "queuedAttributeNames", "attribute", "plugin", "apply", "action", "DATASTAR_FETCH_EVENT", "evt", "watcher", "cleanupEls", "els", "el", "cleanups", "cleanup", "aliasedIgnore", "aliasify", "aliasedIgnoreAttr", "shouldIgnore", "applyEls", "onlyNew", "key", "applyAttributePlugin", "observe", "mutations", "target", "type", "attributeName", "addedNodes", "removedNodes", "node", "isHTMLOrSVG", "value", "mutationObserver", "root", "attrKey", "rawKey", "namePart", "rawModifiers", "pluginName", "keyReq", "valueReq", "cachedRx", "args", "genRx", "rawMod", "label", "mod", "returnsValue", "argNames", "expr", "statementRe", "statements", "lastIdx", "last", "escaped", "escapeRe", "DSP", "DSS", "counter", "match", "k", "v", "signalName", "acc", "part", "varName", "fn", "name", "err", "ctxIdMap", "ctxPersistentIds", "oldIdTagNameMap", "duplicateIds", "ctxPantry", "aliasedIgnoreMorph", "aliasify", "aliasedIgnoreMorphAttr", "morph", "oldElt", "newContent", "mode", "isHTMLOrSVG", "normalizedElt", "oldIdElements", "id", "tagName", "newIdElements", "parent", "populateIdMapWithTree", "morphChildren", "oldParent", "newParent", "insertionPoint", "endPoint", "newChild", "bestMatch", "findBestMatch", "cursor", "tempNode", "removeNode", "morphNode", "movedChild", "current", "idSet", "moveBefore", "newEmptyChild", "newClonedChild", "node", "startPoint", "nextSibling", "siblingSoftMatchCount", "displaceMatchCount", "nodeMatchCount", "isSoftMatch", "isIdSetMatch", "oldSet", "newSet", "oldNode", "newNode", "aliasedPreserveAttr", "type", "newElt", "preserveAttrs", "name", "value", "i", "root", "elements", "elt", "action", "_", "fn", "startPeeking", "stopPeeking", "action", "_", "value", "filter", "startPeeking", "masked", "filtered", "updateLeaves", "mergePatch", "stopPeeking", "action", "_", "filter", "startPeeking", "masked", "filtered", "updateLeaves", "oldValue", "mergePatch", "stopPeeking", "fetchAbortControllers", "createHttpMethod", "name", "method", "action", "el", "evt", "error", "url", "selector", "userHeaders", "contentType", "include", "exclude", "openWhenHidden", "retryInterval", "retryScaler", "retryMaxWaitMs", "retryMaxCount", "requestCancellation", "controller", "isDisabled", "oldController", "observer", "mutations", "mutation", "removed", "cleanupFn", "initialHeaders", "headers", "req", "response", "dispatchFetch", "ERROR", "type", "argsRawLines", "line", "i", "v", "argsRaw", "k", "isWrongContent", "RETRYING", "urlInstance", "queryParams", "res", "filtered", "formEl", "formData", "submitter", "preventDefault", "multipart", "formParams", "key", "value", "STARTED", "fetchEventSource", "e", "FINISHED", "RETRIES_FAILED", "DATASTAR_FETCH_EVENT", "err", "getBytes", "stream", "onChunk", "reader", "result", "getLines", "onLine", "buffer", "position", "fieldLength", "discardTrailingNewline", "arr", "concat", "bufLength", "lineStart", "lineEnd", "getMessages", "onId", "onRetry", "onMessage", "message", "newMessage", "decoder", "field", "valueOffset", "retry", "a", "b", "input", "inputSignal", "inputHeaders", "inputOnOpen", "onmessage", "onclose", "onerror", "inputFetch", "overrides", "rest", "resolve", "reject", "curRequestController", "onVisibilityChange", "create", "retryTimer", "dispose", "fetch", "onopen", "retries", "baseRetryInterval", "dispatchNonSSE", "dispatchType", "argNames", "n", "kebab", "o", "ct", "script", "scriptAttributesHeader", "id", "interval", "innerErr", "attribute", "el", "key", "rx", "syncAttr", "val", "update", "observer", "obj", "attributeFilter", "cleanup", "effect", "dataURIRegex", "empty", "aliasedBind", "aliasify", "attribute", "el", "key", "mods", "value", "error", "signalName", "modifyCasing", "get", "type", "set", "syncSignal", "files", "signalFiles", "f", "resolve", "reader", "match", "mergePaths", "typeMap", "option", "initialValue", "getPath", "path", "signalNameKebab", "inputs", "paths", "i", "input", "signalValue", "cleanup", "effect", "attribute", "key", "el", "mods", "rx", "modifyCasing", "callback", "observer", "classes", "k", "classNames", "cn", "name", "cleanup", "effect", "attribute", "key", "mods", "rx", "error", "mergePaths", "modifyCasing", "computed", "patch", "updateLeaves", "old", "mergePatch", "attribute", "rx", "effect", "attribute", "el", "key", "mods", "value", "signalName", "modifyCasing", "mergePaths", "watcher", "event", "type", "elt", "STARTED", "FINISHED", "DATASTAR_FETCH_EVENT", "attribute", "el", "value", "mods", "spaces", "filters", "jsStrToObject", "callback", "observer", "filtered", "cleanup", "effect", "tagToMs", "args", "arg", "tagHas", "tags", "tag", "defaultValue", "delay", "callback", "wait", "args", "debounce", "leading", "trailing", "timer", "throttle", "waiting", "modifyTiming", "mods", "delayArgs", "tagToMs", "debounceArgs", "tagHas", "throttleArgs", "supportsViewTransitions", "modifyViewTransition", "callback", "mods", "cb", "args", "attribute", "el", "key", "mods", "rx", "target", "callback", "evt", "beginBatch", "endBatch", "modifyViewTransition", "modifyTiming", "evtListOpts", "cb", "eventName", "modifyCasing", "DATASTAR_FETCH_EVENT", "DATASTAR_SIGNAL_PATCH_EVENT", "once", "attribute", "el", "mods", "rx", "callback", "beginBatch", "endBatch", "modifyViewTransition", "modifyTiming", "options", "observer", "entries", "entry", "attribute", "mods", "rx", "callback", "beginBatch", "endBatch", "modifyViewTransition", "duration", "durationArgs", "tagToMs", "tagHas", "intervalId", "attribute", "rx", "mods", "callback", "beginBatch", "endBatch", "modifyViewTransition", "wait", "delayArgs", "tagToMs", "delay", "attribute", "el", "key", "mods", "rx", "error", "filtersRaw", "filters", "jsStrToObject", "callback", "modifyTiming", "evt", "watched", "filtered", "isEmpty", "beginBatch", "endBatch", "DATASTAR_SIGNAL_PATCH_EVENT", "attribute", "el", "key", "mods", "value", "signalName", "modifyCasing", "mergePaths", "NONE", "DISPLAY", "attribute", "el", "rx", "update", "observer", "cleanup", "effect", "attribute", "key", "mods", "rx", "ifMissing", "modifyCasing", "mergePaths", "patch", "mergePatch", "attribute", "key", "el", "rx", "style", "initialStyles", "apply", "prop", "value", "initial", "update", "observer", "styles", "kebab", "cleanup", "effect", "attribute", "el", "rx", "update", "observer", "cleanup", "effect", "watcher", "ctx", "elements", "selector", "mode", "useViewTransition", "args2", "supportsViewTransitions", "onPatchElements", "error", "elementsWithSvgsRemoved", "hasHtml", "hasHead", "hasBody", "newDocument", "newContent", "child", "target", "applyToTargets", "targets", "scripts", "script", "execute", "elScripts", "old", "name", "value", "applyPatchMode", "element", "action", "cloned", "morph", "watcher", "error", "signals", "onlyIfMissing", "ifMissing", "mergePatch", "jsStrToObject"]
+}
diff --git a/experiments/tutorial/templates/tutorial.html b/experiments/tutorial/templates/tutorial.html
new file mode 100644
index 0000000..d30ebf2
--- /dev/null
+++ b/experiments/tutorial/templates/tutorial.html
@@ -0,0 +1,182 @@
+{{define "main-page"}}
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width,initial-scale=1" />
+    <title>Interactive HTML Tutorial</title>
+    <script type="module" src="/datastar.js"></script>
+    <style>
+        *{box-sizing:border-box} body{font-family:Inter,system-ui,Segoe UI,Roboto,Arial; background:#f3f6fb; padding:24px}
+        .container{max-width:900px;margin:0 auto;background:#fff;border-radius:12px;box-shadow:0 10px 40px rgba(0,0,0,.08);overflow:hidden}
+        .header{padding:28px;background:linear-gradient(90deg,#5562f7,#8b5cf6);color:#fff;text-align:center}
+        .header h1{margin:0;font-size:1.8rem}
+        #content{padding:28px;min-height:360px}
+        button{background:#5562f7;color:#fff;border:none;padding:10px 18px;border-radius:8px;cursor:pointer}
+        .btn-ghost{background:#eef2ff;color:#111}
+        .quiz-option{display:block;width:100%;text-align:left;padding:12px;border-radius:8px;margin:8px 0;border:1px solid #eef2ff;background:#fbfdff}
+        pre.code{background:#0f1724;color:#a7f3d0;padding:12px;border-radius:8px;overflow:auto}
+        .hint{background:#fff7ed;border-left:4px solid #f59e0b;padding:12px;border-radius:6px;margin:12px 0}
+        .feedback{padding:14px;border-radius:8px;margin:12px 0}
+        .feedback.success{background:#ecfdf5;border-left:4px solid #10b981;}
+        .feedback.error{background:#fff1f2;border-left:4px solid #ef4444;}
+        footer{padding:16px;text-align:center;font-size:.9rem;color:#6b7280;}
+    </style>
+</head>
+<body>
+    <div class="container">
+        <div class="header">
+            <h1>Learn HTML — Interactive Mini Tutorial</h1>
+            <p style="opacity:.9;margin-top:6px">Hands-on lessons, short quizzes and tiny exercises.</p>
+        </div>
+
+        <div id="content" data-signals='{"progress":0,"mastery":0}'>
+            {{template "intro" .}}
+        </div>
+
+        <footer>
+            Progress: <span data-signal="progress">0</span>% &nbsp; • &nbsp; Mastery: <span data-signal="mastery">0</span>%
+        </footer>
+    </div>
+</body>
+</html>
+{{end}}
+
+
+{{/* --- Intro screen --- */}}
+{{define "intro"}}
+<div style="padding:8px 0 0 0">
+    <div style="margin-bottom:18px">
+        <h2>Welcome 👋</h2>
+        <p>In this short interactive tutorial you'll learn what HTML is, try a quick quiz, and write your first &lt;h1&gt; tag.</p>
+    </div>
+
+    <div style="display:flex;gap:12px;align-items:center">
+        <button data-on:click="@get('/node/what-is-html')">Start Learning</button>
+        <button class="btn-ghost" data-on:click="@get('/node/summary')">See Outline</button>
+    </div>
+</div>
+{{end}}
+
+
+{{/* --- Outline / summary --- */}}
+{{define "summary"}}
+<h2>Lesson Outline</h2>
+<ul>
+    <li>What is HTML? (short)</li>
+    <li>Quiz: basic concept</li>
+    <li>Exercise: create a heading (&lt;h1&gt;)</li>
+</ul>
+<p>
+    <button data-on:click="@get('/node/what-is-html')">Begin Lesson</button>
+</p>
+{{end}}
+
+
+{{/* --- Short lesson node --- */}}
+{{define "what-is-html"}}
+<h2>What is HTML?</h2>
+<p><strong>HTML</strong> stands for <em>HyperText Markup Language</em>. It's the language used to describe the structure of web pages using tags such as &lt;h1&gt;, &lt;p&gt;, &lt;a&gt; and others.</p>
+
+<h3>Key ideas</h3>
+<ul>
+    <li>HTML is markup, not a programming language.</li>
+    <li>Elements use tags: &lt;tag&gt;content&lt;/tag&gt;.</li>
+    <li>Browsers render HTML to show pages.</li>
+</ul>
+
+<div style="margin-top:18px">
+    <button data-on:click="@get('/node/quiz-what-is-html')">Take a quick quiz</button>
+    <button class="btn-ghost" data-on:click="@get('/node/exercise-first-tag')">Try an exercise instead</button>
+</div>
+{{end}}
+
+
+{{/* --- Quiz node --- */}}
+{{define "quiz-what-is-html"}}
+<h2>Quiz — What is HTML?</h2>
+<p>Choose the best answer:</p>
+
+<div style="margin-top:12px">
+    {{range .QuizOptions}}
+    <button class="quiz-option" data-on:click="@post('/answer', {quiz: 'quiz-what-is-html', answer: '{{.ID}}'})">
+        <strong>{{.ID | printf "%s."}}</strong> {{.Text}}
+    </button>
+    {{end}}
+</div>
+
+<div id="quiz-feedback" style="margin-top:12px"></div>
+
+<div style="margin-top:16px">
+    <button class="btn-ghost" data-on:click="@get('/node/what-is-html')">Back</button>
+</div>
+{{end}}
+
+
+{{/* Keep an alias if older links use the other name */}}
+{{define "quiz-html-tags"}}{{template "quiz-what-is-html" .}}{{end}}
+
+
+{{/* --- Exercise: first tag --- */}}
+{{define "exercise-first-tag"}}
+<h2>Exercise — Your first &lt;h1&gt;</h2>
+<p>Finish the HTML snippet so the page shows a heading that reads <strong>Hello World</strong>.</p>
+
+<pre class="code">&lt;!doctype html&gt;
+&lt;html&gt;
+  &lt;body&gt;
+    <!-- add a heading below -->
+    {{printf "%s" ""}}
+  &lt;/body&gt;
+&lt;/html&gt;</pre>
+
+<textarea id="code" placeholder="Type your HTML here">&lt;h1&gt;Hello World&lt;/h1&gt;</textarea>
+
+<div style="margin-top:12px">
+    <button data-on:click="$$post('/code/check', {exerciseId: 'first-tag', code: document.querySelector('#code').value})">Run & Check</button>
+    <button class="btn-ghost" data-on:click="@get('/node/what-is-html')">Skip</button>
+</div>
+
+<div id="exercise-feedback" style="margin-top:12px"></div>
+{{end}}
+
+
+{{/* --- Feedback fragments --- */}}
+{{define "correct-answer"}}
+<div class="feedback success">
+    <h3>✅ Correct</h3>
+    <p>{{.Explanation}}</p>
+    <button data-on:click="@get('/node/{{.NextNode}}')">Continue</button>
+</div>
+{{end}}
+
+{{define "wrong-answer"}}
+<div class="feedback error">
+    <h3>❌ Not quite</h3>
+    {{if .ShowHint}}<div class="hint">{{.Hint}}</div>{{end}}
+    <p>Try again or review the lesson.</p>
+    <div style="margin-top:10px">
+        <button data-on:click="@get('/node/quiz-what-is-html')">Try Again</button>
+        <button class="btn-ghost" data-on:click="@get('/node/what-is-html')">Review</button>
+    </div>
+</div>
+{{end}}
+
+
+{{/* --- Code-check results --- */}}
+{{define "code-pass"}}
+<div class="feedback success">
+    <h3>🎉 Nice work — it passed!</h3>
+    <p>{{.Output}}</p>
+    <button data-on:click="@get('/node/quiz-what-is-html')">Go to Quiz</button>
+</div>
+{{end}}
+
+{{define "code-fail"}}
+<div class="feedback error">
+    <h3>Looks like there is an issue</h3>
+    <p>{{.Error}}</p>
+    <button class="btn-ghost" data-on:click="@get('/node/exercise-first-tag')">Open Editor</button>
+</div>
+{{end}}
+
diff --git a/experiments/tutorial/tutorial old.txt b/experiments/tutorial/tutorial old.txt
new file mode 100644
index 0000000..2f60795
--- /dev/null
+++ b/experiments/tutorial/tutorial old.txt	
@@ -0,0 +1,517 @@
+{{define "main-page"}}
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<meta charset="UTF-8">
+	<meta name="viewport" content="width=device-width, initial-scale=1.0">
+	<title>Interactive HTML Tutorial</title>
+	<script type="module" src="/datastar.js"></script>
+	<style>
+		* { margin: 0; padding: 0; box-sizing: border-box; }
+		body {
+			font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
+			line-height: 1.6;
+			color: #333;
+			background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+			min-height: 100vh;
+			padding: 20px;
+		}
+		.container {
+			max-width: 900px;
+			margin: 0 auto;
+			background: white;
+			border-radius: 20px;
+			box-shadow: 0 20px 60px rgba(0,0,0,0.3);
+			overflow: hidden;
+		}
+		.header {
+			background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+			color: white;
+			padding: 30px;
+			text-align: center;
+		}
+		.header h1 {
+			font-size: 2.5em;
+			margin-bottom: 10px;
+		}
+		.progress-bar {
+			background: rgba(255,255,255,0.2);
+			height: 8px;
+			border-radius: 4px;
+			overflow: hidden;
+			margin-top: 20px;
+		}
+		.progress-fill {
+			background: #4ade80;
+			height: 100%;
+			transition: width 0.5s ease;
+		}
+		#content {
+			padding: 40px;
+			min-height: 400px;
+		}
+		h2 {
+			color: #667eea;
+			margin-bottom: 20px;
+			font-size: 2em;
+		}
+		h3 {
+			color: #764ba2;
+			margin: 20px 0 10px 0;
+		}
+		p {
+			margin-bottom: 15px;
+			font-size: 1.1em;
+		}
+		button {
+			background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+			color: white;
+			border: none;
+			padding: 12px 30px;
+			border-radius: 8px;
+			font-size: 1em;
+			cursor: pointer;
+			transition: transform 0.2s, box-shadow 0.2s;
+			margin: 10px 10px 10px 0;
+		}
+		button:hover {
+			transform: translateY(-2px);
+			box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
+		}
+		.btn-secondary {
+			background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
+		}
+		.quiz-option {
+			display: block;
+			width: 100%;
+			text-align: left;
+			margin: 10px 0;
+			background: #f8f9fa;
+			color: #333;
+		}
+		.quiz-option:hover {
+			background: #e9ecef;
+		}
+		.feedback {
+			padding: 20px;
+			border-radius: 10px;
+			margin: 20px 0;
+		}
+		.feedback.success {
+			background: #d1fae5;
+			border-left: 4px solid #10b981;
+		}
+		.feedback.error {
+			background: #fee2e2;
+			border-left: 4px solid #ef4444;
+		}
+		.hint {
+			background: #fef3c7;
+			border-left: 4px solid #f59e0b;
+			padding: 15px;
+			margin: 15px 0;
+			border-radius: 5px;
+		}
+		textarea {
+			width: 100%;
+			min-height: 200px;
+			padding: 15px;
+			border: 2px solid #e5e7eb;
+			border-radius: 8px;
+			font-family: 'Courier New', monospace;
+			font-size: 14px;
+			margin: 15px 0;
+			resize: vertical;
+		}
+		textarea:focus {
+			outline: none;
+			border-color: #667eea;
+		}
+		.code-output {
+			background: #1f2937;
+			color: #10b981;
+			padding: 15px;
+			border-radius: 8px;
+			font-family: 'Courier New', monospace;
+			margin: 15px 0;
+		}
+		pre {
+			white-space: pre-wrap;
+		}
+		.intro-box {
+			background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
+			padding: 30px;
+			border-radius: 15px;
+			margin: 20px 0;
+		}
+		.stats {
+			display: flex;
+			justify-content: space-around;
+			padding: 20px;
+			background: #f8f9fa;
+			border-radius: 10px;
+			margin: 20px 0;
+		}
+		.stat-item {
+			text-align: center;
+		}
+		.stat-value {
+			font-size: 2em;
+			font-weight: bold;
+			color: #667eea;
+		}
+		.stat-label {
+			color: #6b7280;
+			font-size: 0.9em;
+		}
+	</style>
+</head>
+<body>
+    <div id="content" class="container" data-signals='{"progress": 0, "mastery": 0}'>
+        {{template "intro" .}}
+    </div>
+
+    <script>
+    // Lightweight click handler to support data-on-click / data-on:click attributes if datastar.js doesn't wire them.
+    (function(){
+        function parseSpec(spec) {
+            spec = (spec||"").trim();
+            var m = spec.match(/^(?:@|\$+)?([A-Za-z]+)\((['"])(.+?)\2\)$/);
+            if (!m) return null;
+            var verb = m[1].toUpperCase();
+            var path = m[3];
+            var v2 = path.match(/^([A-Z]+)\s+(\/.*)$/);
+            if (v2) { verb = v2[1]; path = v2[2]; }
+            return { method: verb, path: path };
+        }
+
+        document.addEventListener('click', function(e){
+            // support either attribute name (old and rc6): data-on-click and data-on:click
+            var el = e.target.closest && e.target.closest('[data-on-click], [data-on\\:click]');
+            if (!el) return;
+            var spec = el.getAttribute('data-on-click') || el.getAttribute('data-on:click') || '';
+            var parsed = parseSpec(spec);
+            if (!parsed) return;
+            e.preventDefault();
+
+            if (parsed.method === 'GET') {
+                fetch(parsed.path, { method: 'GET', headers: { Accept: 'text/html' }, credentials: 'same-origin' })
+                    .then(function(res){ return res.text(); })
+                    .then(function(html){
+                        var container = document.getElementById('content');
+                        if (container) {
+                            container.innerHTML = html;
+                            container.querySelectorAll('script').forEach(function(s){
+                                var ns = document.createElement('script');
+                                if (s.src) ns.src = s.src;
+                                ns.text = s.textContent;
+                                document.head.appendChild(ns);
+                                document.head.removeChild(ns);
+                            });
+                        }
+                    })
+                    .catch(function(err){ console.error('nav fetch failed', err); });
+                return;
+            }
+
+            console.warn('Unhandled method in data-on-click/ data-on:click:', parsed.method);
+        }, false);
+    })();
+    </script>
+</body>
+</html>
+{{end}}
+
+{{define "intro"}}
+<div class="intro-box">
+    <h2>Welcome to Your HTML Journey! 👋</h2>
+    <p>This interactive tutorial will teach you HTML from the ground up. You'll learn by doing, with:</p>
+    <ul style="margin: 20px 0 20px 30px; font-size: 1.1em;">
+    </ul>
+    <p>The tutorial adapts to your pace - if you're doing great, we'll move faster. If you need more practice, we'll provide it!</p>
+    <button data-on:click="@get('/node/what-is-html')">
+        Start Learning
+    </button>
+</div>
+{{end}}
+
+{{define "what-is-html"}}
+<div>
+    <h2>What is HTML? 🤔</h2>
+    <p><strong>HTML</strong> stands for <strong>HyperText Markup Language</strong>. It's the standard language used to create web pages.</p>
+    <button data-on:click="@get('/node/quiz-what-is-html')">
+        Next
+    </button>
+</div>
+{{end}}
+
+{{define "correct-answer"}}
+<div class="feedback success">
+    <h3>✅ Correct! Great job!</h3>
+    <p>{{.Explanation}}</p>
+    <button data-on:click="@get('/node/{{.NextNode}}')">
+        Continue
+    </button>
+</div>
+{{end}}
+
+{{define "wrong-answer"}}
+<div class="feedback error">
+    <h3>❌ Not quite right</h3>
+    {{if .ShowHint}}
+    <div class="hint">
+    </div>
+    {{end}}
+    <button data-on:click="@get('/node/quiz-what-is-html')">
+        Try Again
+    </button>
+</div>
+{{end}}
+
+{{define "html-structure"}}
+<div>
+	<h2>HTML Structure 🏗️</h2>
+	<p>Every HTML document follows a basic structure. Think of it like a house - it needs a foundation, walls, and a roof!</p>
+	
+	<div class="code-output">
+		<pre>&lt;!DOCTYPE html&gt;
+&lt;html&gt;
+  &lt;head&gt;
+    &lt;title&gt;Page Title&lt;/title&gt;
+  &lt;/head&gt;
+  &lt;body&gt;
+    &lt;h1&gt;My First Heading&lt;/h1&gt;
+    &lt;p&gt;My first paragraph.&lt;/p&gt;
+  &lt;/body&gt;
+&lt;/html&gt;</pre>
+	</div>
+	
+	<h3>Let's break this down:</h3>
+	<ul style="margin: 15px 0 15px 30px; line-height: 2;">
+		<li><code>&lt;!DOCTYPE html&gt;</code> - Tells the browser this is HTML5</li>
+		<li><code>&lt;html&gt;</code> - The root element, contains everything</li>
+		<li><code>&lt;head&gt;</code> - Contains metadata (title, links to CSS, etc.)</li>
+		<li><code>&lt;body&gt;</code> - Contains the visible content</li>s
+	</ul>
+	
+	<p>Most HTML elements have an <strong>opening tag</strong> and a <strong>closing tag</strong> (with a /). The content goes between them!</p>
+	
+	<button data-on-click="@get('/node/html-tags')">
+		Learn About HTML Tags →
+	</button>
+</div>
+{{end}}
+
+{{define "html-tags"}}
+<div>
+	<h2>HTML Tags 🏷️</h2>
+	<p>HTML uses <strong>tags</strong> to mark up content. Tags tell the browser how to display the content.</p>
+	
+	<h3>Common HTML Tags:</h3>
+	<div style="background: #f8f9fa; padding: 20px; border-radius: 10px; margin: 20px 0;">
+		<p><code>&lt;h1&gt;</code> to <code>&lt;h6&gt;</code> - Headings (h1 is largest)</p>
+		<p><code>&lt;p&gt;</code> - Paragraph</p>
+		<p><code>&lt;a&gt;</code> - Link</p>
+		<p><code>&lt;img&gt;</code> - Image</p>
+		<p><code>&lt;div&gt;</code> - Division/container</p>
+		<p><code>&lt;span&gt;</code> - Inline container</p>
+	</div>
+	
+	<h3>Tag Anatomy:</h3>
+	<div class="code-output">
+		<pre>&lt;p&gt;This is a paragraph&lt;/p&gt;
+ ↑         ↑              ↑
+Opening   Content      Closing
+ Tag                     Tag</pre>
+	</div>
+	
+	<p>Most tags come in pairs, but some are <strong>self-closing</strong> like <code>&lt;img&gt;</code> and <code>&lt;br&gt;</code>.</p>
+	
+	<button data-on-click="@get('/node/quiz-html-tags')">
+		Take the Quiz →
+	</button>
+</div>
+{{end}}
+
+{{define "quiz-html-tags"}}
+<div>
+    <h2>Quiz: HTML Tags 📝</h2>
+    <p>Let's test your knowledge of HTML tags:</p>
+    
+    <div style="margin: 30px 0;">
+        <h3>Which tag is used to create a paragraph?</h3>
+        {{range .QuizOptions}}
+        <button class="quiz-option" data-on-click="@post('/answer', {quiz: 'quiz-html-tags', answer: '{{.ID}}'})">
+            {{.Text}}
+        </button>
+        {{end}}
+    </div>
+    
+    <div id="quiz-feedback"></div>
+</div>
+{{end}}
+
+{{/* Alias for older/alternate node name used by buttons/routes */}}
+{{define "quiz-what-is-html"}}{{template "quiz-html-tags" .}}{{end}}
+
+{{define "exercise-first-tag"}}
+<div data-signals='{"code": "{{.StartingCode}}"}'>
+	<h2>{{.Title}} 💻</h2>
+	<p>{{.Instructions}}</p>
+	
+	<p>Remember: HTML tags have an opening tag <code>&lt;h1&gt;</code> and a closing tag <code>&lt;/h1&gt;</code> with the content in between!</p>
+	
+	<textarea 
+		id="code-editor"
+		data-model="code"
+		placeholder="Type your HTML here..."
+	>{{.StartingCode}}</textarea>
+	
+	<button data-on-click="@post('/code/check', {exerciseId: '{{.ExerciseID}}', code: $code})">
+		Check My Code ✓
+	</button>
+	
+	<div id="exercise-feedback"></div>
+</div>
+{{end}}
+
+{{define "html-attributes"}}
+<div>
+	<h2>HTML Attributes 🎯</h2>
+	<p>Attributes provide additional information about HTML elements. They're always specified in the opening tag.</p>
+	
+	<div class="code-output">
+		<pre>&lt;a href="https://example.com"&gt;Click me&lt;/a&gt;
+      ↑
+   Attribute
+   (name="value")</pre>
+	</div>
+	
+	<h3>Common Attributes:</h3>
+	<div style="background: #f8f9fa; padding: 20px; border-radius: 10px; margin: 20px 0;">
+		<p><code>href</code> - Link destination (for <code>&lt;a&gt;</code> tags)</p>
+		<p><code>src</code> - Image source (for <code>&lt;img&gt;</code> tags)</p>
+		<p><code>alt</code> - Alternative text for images</p>
+		<p><code>id</code> - Unique identifier for an element</p>
+		<p><code>class</code> - Class name for styling</p>
+	</div>
+	
+	<h3>Example with Multiple Attributes:</h3>
+	<div class="code-output">
+		<pre>&lt;img src="logo.png" alt="Company Logo" width="200"&gt;</pre>
+	</div>
+	
+	<button data-on-click="@get('/node/exercise-paragraph')">
+		Practice with Paragraphs →
+	</button>
+</div>
+{{end}}
+
+{{define "exercise-paragraph"}}
+<div data-signals='{"code": "{{.StartingCode}}"}'>
+	<h2>{{.Title}} 💻</h2>
+	<p>{{.Instructions}}</p>
+	
+	<p><strong>Tip:</strong> A paragraph tag looks like this: <code>&lt;p&gt;Your text here&lt;/p&gt;</code></p>
+	
+	<textarea 
+		id="code-editor"
+		data-model="code"
+		placeholder="Type your HTML here..."
+	>{{.StartingCode}}</textarea>
+	
+	<button data-on-click="@post('/code/check', {exerciseId: '{{.ExerciseID}}', code: $code})">
+		Check My Code ✓
+	</button>
+	
+	<div id="exercise-feedback"></div>
+</div>
+{{end}}
+
+{{define "advanced-tags"}}
+<div>
+	<h2>Advanced HTML Tags 🚀</h2>
+	<p>Great job so far! You're ready for more advanced tags. Let's look at lists and semantic HTML.</p>
+	
+	<h3>Lists:</h3>
+	<div class="code-output">
+		<pre>&lt;!-- Unordered List --&gt;
+&lt;ul&gt;
+  &lt;li&gt;Item 1&lt;/li&gt;
+  &lt;li&gt;Item 2&lt;/li&gt;
+&lt;/ul&gt;
+
+&lt;!-- Ordered List --&gt;
+&lt;ol&gt;
+  &lt;li&gt;First&lt;/li&gt;
+  &lt;li&gt;Second&lt;/li&gt;
+&lt;/ol&gt;</pre>
+	</div>
+	
+	<h3>Semantic HTML5 Tags:</h3>
+	<div style="background: #f8f9fa; padding: 20px; border-radius: 10px; margin: 20px 0;">
+		<p><code>&lt;header&gt;</code> - Page or section header</p>
+		<p><code>&lt;nav&gt;</code> - Navigation links</p>
+		<p><code>&lt;main&gt;</code> - Main content</p>
+		<p><code>&lt;article&gt;</code> - Self-contained content</p>
+		<p><code>&lt;section&gt;</code> - Thematic grouping</p>
+		<p><code>&lt;footer&gt;</code> - Page or section footer</p>
+	</div>
+	
+	<p>These semantic tags make your HTML more meaningful and accessible!</p>
+	
+	<button data-on-click="@get('/node/congratulations')">
+		Complete Tutorial →
+	</button>
+</div>
+{{end}}
+
+{{define "congratulations"}}
+<div>
+	<h2>🎉 Congratulations!</h2>
+	<p>You've completed the HTML Basics tutorial! You now know:</p>
+	
+	<ul style="margin: 20px 0 20px 30px; font-size: 1.1em; line-height: 2;">
+		<li>✅ What HTML is and why it's important</li>
+		<li>✅ Basic HTML structure</li>
+		<li>✅ Common HTML tags</li>
+		<li>✅ How to write HTML code</li>
+		<li>✅ HTML attributes</li>
+		{{if ge .MasteryScore 80}}
+		<li>✅ Advanced HTML concepts</li>
+		{{end}}
+	</ul>
+	
+	<div class="stats">
+		<div class="stat-item">
+			<div class="stat-value">{{.NodesCompleted}}</div>
+			<div class="stat-label">Lessons Completed</div>
+		</div>
+		<div class="stat-item">
+			<div class="stat-value">{{.MasteryScore}}%</div>
+			<div class="stat-label">Mastery Score</div>
+		</div>
+		<div class="stat-item">
+			<div class="stat-value">{{len .CompletedExercises}}</div>
+			<div class="stat-label">Exercises Done</div>
+		</div>
+	</div>
+	
+	<div class="intro-box">
+		<h3>What's Next? 🚀</h3>
+		<p>Continue your web development journey with:</p>
+		<ul style="margin: 15px 0 15px 30px;">
+			<li>CSS Tutorial - Style your HTML pages</li>
+			<li>JavaScript Tutorial - Add interactivity</li>
+			<li>Build Your First Website - Put it all together</li>
+		</ul>
+	</div>
+	
+	<button data-on-click="@get('/node/intro')">
+		Start Over
+	</button>
+	<button class="btn-secondary" onclick="alert('More tutorials coming soon!')">
+		Next Tutorial →
+	</button>
+</div>
+{{end}}
\ No newline at end of file
diff --git a/slides/datastar/slides.md b/slides/datastar/slides.md
index 3df07d3..83f0c41 100644
--- a/slides/datastar/slides.md
+++ b/slides/datastar/slides.md
@@ -444,6 +444,134 @@ class: default
 | Mechanism | Placeholder substitution | Link/form embedding                        |
 | Example   | `{{.Title}}` → “Article” | `<a href="{{.Links.Edit}}">Edit</a>`       |
 
+---
+layout: center
+class: text-center
+---
+
+# Putting Everything Together
+
+---
+clicks: 6
+---
+
+# Smooth paragraph → circle flow
+
+<div>
+  <p v-click="1">
+    This is the first paragraph with an
+    <span v-mark="{ at: 2, type: 'circle', color: '#ff7b72' }">
+      important phrase
+    </span>.
+  </p>
+
+  <p v-click="3">
+    Here comes the second paragraph with
+    <span v-mark="{ at: 4, type: 'circle', color: '#4cb0ff' }">
+      key words
+    </span>
+    to highlight.
+  </p>
+
+  <p v-click="5">
+    Finally, the third paragraph shows and then
+    <span v-mark="{ at: 6, type: 'circle', color: '#6ce5b6' }">
+      the spotlight
+    </span>
+    appears.
+  </p>
+</div>
+
+
+---
+class: default
+clicks: 7
+---
+
+# The Name "Datastar"
+
+<v-click> 
+
+## Comes from the custom data-*  Attribute 
+
+</v-click>
+
+<v-click>
+A custom data- attribute is an HTML attribute that allows you to store extra information about an HTML element in a standard, private way.
+
+It must be named starting with the prefix data-, for example: data-product-id="123".
+</v-click>
+
+<p v-click="3">
+  <code>
+  &lt;div id="foo" data-<span v-mark.circle.orange="4">what-ever</span>= <span v-mark.circle.red="5">"Any String you want"</span> &gt;&nbsp; Lorem ... &nbsp;&lt;/div&gt;
+  </code>
+</p>
+
+<v-click at="6">
+there even is a javascript api for this:
+```js
+const el = document.getElementById("foo");
+el.dataset.whatEver = "you've got it!";
+```
+</v-click>
+
+<v-click at="7" >
+
+- Every HTML element provides a key–value store (via its .dataset property) for arbitrary data you want to associate with that element.
+- data-* attributes are real, queryable, and stylable DOM attributes. You can select them in CSS, query them in JS, and even animate style changes as their values change.
+
+</v-click>
+
+---
+class: default
+---
+
+# Datastar and `data-*` Attributes
+## 
+
+<v-click>
+<p>
+The <strong>Datastar</strong> library builds on a simple, native web standard: custom <code>data-*</code> attributes.  
+Each element can carry its own key–value store of information, making HTML itself the natural host for behavior and state.
+</p>
+</v-click>
+
+<v-click>
+<p>
+Datastar defines <strong>21 <code>data-*</code> attributes</strong> that express intent directly in markup.  
+These attributes describe data flow, user interactions, and state transitions without writing imperative JavaScript.
+</p>
+</v-click>
+
+<v-click>
+<p>
+The <em>values</em> of those attributes form a small, declarative <strong>DSL</strong> — called <em>Datastar Expressions</em>.  
+Each expression describes what should happen when data or events change, turning attributes into a layer of reactive logic.
+</p>
+</v-click>
+
+<v-click>
+<p>
+By keeping logic inside the elements they affect, Datastar achieves <strong>locality of behavior</strong> —  
+where markup, data, and interactivity remain close together.  
+This makes components easier to read, reason about, and maintain.
+</p>
+</v-click>
+
+<v-click>
+<p>
+Datastar provides a set of <strong>built-in actions</strong> (helper functions) that can be used in Datastar expressions to interact with the backend.  
+The main actions are: <code>@get()</code>, <code>@post()</code>, <code>@put()</code>, <code>@patch()</code>, and <code>@delete()</code>.
+</p>
+
+```html
+<button data-on:click="@get('/api/items')">Load Items</button>
+
+```
+</v-click>
+
+
 
 ---
 layout: image
@@ -451,4 +579,4 @@ image: /mariner.png
 transition: slide-up
 level: 2
 ---
-# to be continued ...
\ No newline at end of file
+# to be continued ...