fix: remove context reaper to prevent background tabs from going stale

Background windows stopped updating because the reaper suspended contexts
after ContextSuspendAfter and fully reaped them after ContextTTL. Suspended
contexts had to re-run the page init function from scratch on reconnect,
losing the live-updating experience.

Contexts now live until the browser tab closes (beforeunload beacon) or
the server shuts down. The context map grows indefinitely — no background
reaper.

Removes: startReaper, reapOrphanedContexts, suspend/resume logic,
ContextSuspendAfter/ContextTTL config fields, lastSeenAt/suspended
context fields, and all associated tests.

.claude/commands/pr.md

@@ -8,7 +8,7 @@ Create a PR on Gitea, wait for CI, and squash-merge it. Push code to both remote
 5. Create a Gitea PR: `tea pr create --head <branch> --base main`. Reference related issues with `#X`. Only use `Closes #X` if the PR fully resolves the issue.
 6. Wait for CI to pass: poll Gitea CI status. If CI fails, report the failure and stop — do not merge.
 7. Once CI passes, squash-merge on Gitea: `tea pr merge <index> --style squash` with a clean, semantic commit message including the PR number. No Claude attribution lines.
-8. Update local main and push to both remotes. If in a worktree, `main` is checked out in the primary tree, so run from there: `cd <primary-worktree> && git pull gitea main && git push origin main` (the primary worktree path is the repo root without `.claude/worktrees/…`). If not in a worktree: `git checkout main && git pull gitea main && git push origin main`.
+8. Update local main and push to both remotes: `git checkout main && git pull gitea main && git push origin main`.
 9. Clean up remote branches: `git push gitea --delete <branch> && git push origin --delete <branch>`.
 10. Prune refs: `git remote prune gitea && git remote prune origin`.
 11. Report the merged PR URL.

.gitignore

@@ -37,15 +37,21 @@ go.work.sum
 # Air artifacts
 *tmp/
 
-# Example binaries and data files
+# binaries
-internal/examples/*/[a-z]*[!.go]
+internal/examples/chatroom/chatroom
-internal/examples/shakespeare/shake.db
+internal/examples/counter/counter
+internal/examples/countercomp/countercomp
+internal/examples/greeter/greeter
+internal/examples/livereload/livereload
+internal/examples/picocss/picocss
+internal/examples/plugins/plugins
+internal/examples/realtimechart/realtimechart
+internal/examples/shakespeare/shakespeare
+internal/examples/nats-chatroom/nats-chatroom
+/nats-chatroom
 
 # NATS data directory
 data/
 
-# Standalone experiments
-nats-chatroom
-
 # Claude Code worktrees
 .claude/worktrees/

README.md

@@ -74,13 +74,14 @@ func main() {
 - **Plugin system** — `func(v *V)` hooks for integrating CSS/JS libraries
 - **Structured logging** — zerolog with configurable levels; console output in dev, JSON in production
 - **Graceful shutdown** — listens for SIGINT/SIGTERM, drains contexts, closes pub/sub
+- **Context lifecycle** — background reaper cleans up disconnected contexts; configurable TTL
 - **HTML DSL** — the `h` package provides type-safe Go-native HTML composition
 
 ## Examples
 
-The `internal/examples/` directory contains 19 runnable examples:
+The `internal/examples/` directory contains 14 runnable examples:
 
-`chatroom` · `counter` · `countercomp` · `effectspike` · `greeter` · `keyboard` · `livereload` · `maplibre` · `middleware` · `nats-chatroom` · `pathparams` · `picocss` · `plugins` · `pubsub-crud` · `realtimechart` · `session` · `shakespeare` · `signup` · `spa`
+`chatroom` · `counter` · `countercomp` · `greeter` · `keyboard` · `livereload` · `nats-chatroom` · `pathparams` · `picocss` · `plugins` · `pubsub-crud` · `realtimechart` · `session` · `shakespeare`
 
 ## Experimental
 

ci-check.sh

@@ -6,13 +6,9 @@ set -o pipefail
 ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
 cd "$ROOT"
 
-echo "== CI: Check formatting =="
+echo "== CI: Format code =="
-if [ -n "$(gofmt -l .)" ]; then
+go fmt ./...
-  echo "ERROR: files not formatted:"
+echo "OK: formatting complete"
-  gofmt -l .
-  exit 1
-fi
-echo "OK: all files formatted"
 
 echo "== CI: Run go vet =="
 if ! go vet ./...; then

computed.go

@@ -1,6 +1,7 @@
 package via
 
 import (
+	"fmt"
 	"strconv"
 	"strings"
 
@@ -50,5 +51,5 @@ func (s *computedSignal) recompute() {
 }
 
 func (s *computedSignal) patchValue() string {
-	return s.lastVal
+	return fmt.Sprintf("%v", s.lastVal)
 }

docs/state-and-interactivity.md

@@ -94,7 +94,7 @@ Available triggers:
 |--------|-------|-------|
 | `OnClick()` | `click` | |
 | `OnDblClick()` | `dblclick` | |
-| `OnChange()` | `change` | |
+| `OnChange()` | `change` | 200ms debounce |
 | `OnInput()` | `input` | No debounce |
 | `OnSubmit()` | `submit` | |
 | `OnKeyDown(key)` | `keydown` | Filtered by key name (e.g. `"Enter"`, `"Escape"`) |

h/h.go

@@ -5,7 +5,7 @@
 //
 //	h.Div(
 //		h.H1(h.Text("Hello, Via")),
-//		h.P(h.Text("Pure Go. No templates.")),
+//		h.P(h.Text("Pure Go. No tmplates.")),
 //	)
 package h
 

internal/examples/livereload/main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"github.com/ryanhamamura/via"
+	// "github.com/go-via/via-plugin-picocss/picocss"
 	"github.com/ryanhamamura/via/h"
 )
 
@@ -14,6 +15,9 @@ func main() {
 		DocumentTitle: "Live Reload Demo",
 		DevMode:       true,
 		LogLevel:      via.LogLevelDebug,
+		Plugins:       []via.Plugin{
+			// picocss.Default
+		},
 	})
 
 	v.Page("/", func(c *via.Context) {

internal/examples/maplibre/main.go

@@ -1,11 +1,7 @@
 package main
 
 import (
-	"fmt"
-	"math"
 	"math/rand"
-	"strconv"
-	"sync"
 	"time"
 
 	"github.com/ryanhamamura/via"
@@ -13,68 +9,6 @@ import (
 	"github.com/ryanhamamura/via/maplibre"
 )
 
-type posMsg struct {
-	Lng float64 `json:"lng"`
-	Lat float64 `json:"lat"`
-}
-
-var (
-	vehicleOnce sync.Once
-	vehicle     struct {
-		mu       sync.RWMutex
-		lng, lat float64
-	}
-)
-
-// shipState tracks a ship lerping along a loop of waypoints.
-type shipState struct {
-	lng, lat  float64
-	waypoints [][2]float64 // [lng, lat] pairs
-	wpIdx     int          // index of next target waypoint
-	progress  float64      // 0..1 toward next waypoint
-	speed     float64      // progress increment per tick
-}
-
-func (s *shipState) tick() {
-	s.progress += s.speed
-	for s.progress >= 1 {
-		s.progress -= 1
-		s.wpIdx = (s.wpIdx + 1) % len(s.waypoints)
-	}
-	from := s.waypoints[(s.wpIdx-1+len(s.waypoints))%len(s.waypoints)]
-	to := s.waypoints[s.wpIdx]
-	s.lng = from[0] + (to[0]-from[0])*s.progress
-	s.lat = from[1] + (to[1]-from[1])*s.progress
-}
-
-// heading returns clockwise degrees from north (for SVG rotation).
-func (s *shipState) heading() float64 {
-	from := s.waypoints[(s.wpIdx-1+len(s.waypoints))%len(s.waypoints)]
-	to := s.waypoints[s.wpIdx]
-	dx := to[0] - from[0]
-	dy := to[1] - from[1]
-	// atan2 gives angle from +X axis; convert to CW from north
-	return math.Mod(math.Atan2(dx, dy)*180/math.Pi+360, 360)
-}
-
-var (
-	fleetOnce sync.Once
-	fleet     struct {
-		mu    sync.RWMutex
-		ships [3]shipState
-	}
-)
-
-const shipSVG = `<svg width="48" height="28" viewBox="0 0 80 44" xmlns="http://www.w3.org/2000/svg">` +
-	`<path d="M2 30 L10 42 L70 42 L78 30 Z" fill="#1b3a5c"/>` +
-	`<rect x="12" y="24" width="56" height="6" rx="1" fill="#2c5f8a"/>` +
-	`<rect x="18" y="14" width="46" height="10" rx="1" fill="#2c5f8a" stroke="#1b3a5c" stroke-width="0.5"/>` +
-	`<rect x="8" y="12" width="9" height="12" rx="1" fill="#d5dfe8" stroke="#2c5f8a" stroke-width="0.5"/>` +
-	`<rect x="9.5" y="13" width="6" height="4" rx="0.5" fill="#85c1e9"/>` +
-	`<rect x="10" y="4" width="5" height="8" rx="0.5" fill="#1b3a5c"/>` +
-	`<rect x="9.5" y="2" width="6" height="3" rx="0.5" fill="#c0392b"/>` +
-	`</svg>`
-
 func main() {
 	v := via.New()
 	v.Config(via.Options{
@@ -84,65 +18,6 @@ func main() {
 		Plugins:       []via.Plugin{maplibre.Plugin},
 	})
 
-	// Single goroutine moves the vehicle — all clients read the same position.
-	vehicle.lng = -122.43
-	vehicle.lat = 37.77
-	vehicleOnce.Do(func() {
-		go func() {
-			for {
-				time.Sleep(time.Second)
-				vehicle.mu.Lock()
-				vehicle.lng = -122.43 + (rand.Float64()-0.5)*0.02
-				vehicle.lat = 37.77 + (rand.Float64()-0.5)*0.02
-				vehicle.mu.Unlock()
-			}
-		}()
-	})
-
-	// Fleet of ships following waypoint loops through SF Bay.
-	fleetOnce.Do(func() {
-		fleet.ships = [3]shipState{
-			{ // Golden Gate → Alcatraz → Pier 39 → back out
-				waypoints: [][2]float64{
-					{-122.478, 37.819}, {-122.423, 37.827},
-					{-122.410, 37.809}, {-122.423, 37.827},
-				},
-				speed: 0.03,
-			},
-			{ // Oakland → Treasure Island → Angel Island → loop
-				waypoints: [][2]float64{
-					{-122.330, 37.795}, {-122.370, 37.823},
-					{-122.432, 37.860}, {-122.370, 37.823},
-				},
-				speed: 0.02,
-			},
-			{ // Sausalito → Pier 39 ferry route
-				waypoints: [][2]float64{
-					{-122.480, 37.859}, {-122.435, 37.840},
-					{-122.410, 37.809}, {-122.435, 37.840},
-				},
-				speed: 0.025,
-			},
-		}
-		// Set initial positions.
-		for i := range fleet.ships {
-			s := &fleet.ships[i]
-			s.lng = s.waypoints[0][0]
-			s.lat = s.waypoints[0][1]
-			s.wpIdx = 1
-		}
-		go func() {
-			for {
-				time.Sleep(time.Second)
-				fleet.mu.Lock()
-				for i := range fleet.ships {
-					fleet.ships[i].tick()
-				}
-				fleet.mu.Unlock()
-			}
-		}()
-	})
-
 	v.Page("/", func(c *via.Context) {
 		m := maplibre.New(c, maplibre.Options{
 			Style:  "https://demotiles.maplibre.org/style.json",
@@ -170,84 +45,23 @@ func main() {
 			},
 		})
 
-		// Animated container ships following waypoint routes
+		// Signal-backed marker — server pushes position updates
-		shipNames := [3]string{"MSC Adriatica", "Evergreen Harmony", "Maersk Aurora"}
-		type shipSignals struct{ lng, lat, rot *via.Signal }
-		var ships [3]shipSignals
-
-		fleet.mu.RLock()
-		for i, s := range fleet.ships {
-			ships[i].lng = c.Signal(s.lng)
-			ships[i].lat = c.Signal(s.lat)
-			// SVG bow points right (east), so subtract 90° from the north-based heading.
-			ships[i].rot = c.Signal(s.heading() - 90)
-			m.AddMarker(fmt.Sprintf("ship-%d", i), maplibre.Marker{
-				LngSignal:      ships[i].lng,
-				LatSignal:      ships[i].lat,
-				RotationSignal: ships[i].rot,
-				Element:        shipSVG,
-				Anchor:         "center",
-				Popup: &maplibre.Popup{
-					Content: fmt.Sprintf("<strong>%s</strong>", shipNames[i]),
-				},
-			})
-		}
-		fleet.mu.RUnlock()
-
-		// Custom SVG vehicle marker — reads shared Go state
 		vehicleLng := c.Signal(-122.43)
 		vehicleLat := c.Signal(37.77)
 
 		m.AddMarker("vehicle", maplibre.Marker{
 			LngSignal: vehicleLng,
 			LatSignal: vehicleLat,
-			Element: `<svg width="20" height="20" viewBox="0 0 20 20" xmlns="http://www.w3.org/2000/svg">` +
+			Color:     "#9b59b6",
-				`<circle cx="10" cy="10" r="9" fill="#9b59b6" stroke="#fff" stroke-width="2"/>` +
-				`</svg>`,
-			Anchor: "center",
 		})
 
 		c.OnInterval(time.Second, func() {
-			vehicle.mu.RLock()
+			vehicleLng.SetValue(-122.43 + (rand.Float64()-0.5)*0.02)
-			lng, lat := vehicle.lng, vehicle.lat
+			vehicleLat.SetValue(37.77 + (rand.Float64()-0.5)*0.02)
-			vehicle.mu.RUnlock()
-			vehicleLng.SetValue(lng)
-			vehicleLat.SetValue(lat)
-
-			fleet.mu.RLock()
-			for i, s := range fleet.ships {
-				ships[i].lng.SetValue(s.lng)
-				ships[i].lat.SetValue(s.lat)
-				ships[i].rot.SetValue(s.heading() - 90)
-			}
-			fleet.mu.RUnlock()
-
 			c.SyncSignals()
 		})
 
-		// Yellow click marker — synced across clients via PubSub
+		// Draggable marker — user drags, signals update
-		clickLng := c.Signal(-122.4194)
-		clickLat := c.Signal(37.7749)
-
-		m.AddMarker("clicked", maplibre.Marker{
-			LngSignal: clickLng,
-			LatSignal: clickLat,
-			Color:     "#f39c12",
-		})
-
-		via.Subscribe(c, "map.click", func(msg posMsg) {
-			clickLng.SetValue(msg.Lng)
-			clickLat.SetValue(msg.Lat)
-			c.SyncSignals()
-		})
-
-		click := m.OnClick()
-		handleClick := c.Action(func() {
-			e := click.Data()
-			via.Publish(c, "map.click", posMsg{Lng: e.LngLat.Lng, Lat: e.LngLat.Lat})
-		})
-
-		// Blue draggable pin — synced across clients via PubSub
 		pinLng := c.Signal(-122.41)
 		pinLat := c.Signal(37.78)
 
@@ -258,16 +72,14 @@ func main() {
 			Draggable: true,
 		})
 
-		via.Subscribe(c, "map.pin", func(msg posMsg) {
+		// Click event — click to place a marker
-			pinLng.SetValue(msg.Lng)
+		click := m.OnClick()
-			pinLat.SetValue(msg.Lat)
+		handleClick := c.Action(func() {
-			c.SyncSignals()
+			e := click.Data()
+			m.AddMarker("clicked", maplibre.Marker{
+				LngLat: e.LngLat,
+				Color:  "#f39c12",
 			})
-
-		handlePinDrag := c.Action(func() {
-			lng, _ := strconv.ParseFloat(pinLng.String(), 64)
-			lat, _ := strconv.ParseFloat(pinLat.String(), 64)
-			via.Publish(c, "map.pin", posMsg{Lng: lng, Lat: lat})
 		})
 
 		// GeoJSON polygon source + fill layer
@@ -299,7 +111,7 @@ func main() {
 			},
 		})
 
-		// FlyTo actions
+		// FlyTo actions using CameraOptions
 		zoom14 := 14.0
 		flyToSF := c.Action(func() {
 			m.FlyTo(maplibre.CameraOptions{
@@ -322,7 +134,6 @@ func main() {
 					h.H1(h.Text("MapLibre GL Example")),
 					m.Element(
 						click.Input(handleClick.OnInput()),
-						h.Input(h.Type("hidden"), pinLng.Bind(), handlePinDrag.OnInput()),
 					),
 					h.Div(h.Attr("style", "margin-top:1rem;display:flex;gap:0.5rem;flex-wrap:wrap"),
 						h.Button(h.Text("Fly to San Francisco"), flyToSF.OnClick()),
@@ -331,7 +142,6 @@ func main() {
 					h.Div(h.Attr("style", "margin-top:0.5rem;font-size:0.9rem"),
 						h.P(h.Text("Zoom: "), m.Zoom.Text()),
 						h.P(h.Text("Center: "), m.CenterLng.Text(), h.Text(", "), m.CenterLat.Text()),
-						h.P(h.Text("Click: "), clickLng.Text(), h.Text(", "), clickLat.Text()),
 						h.P(h.Text("Vehicle: "), vehicleLng.Text(), h.Text(", "), vehicleLat.Text()),
 						h.P(h.Text("Draggable Pin: "), pinLng.Text(), h.Text(", "), pinLat.Text()),
 					),

internal/examples/pathparams/main.go

@@ -4,12 +4,17 @@ import (
 	"strconv"
 
 	"github.com/ryanhamamura/via"
+	// "github.com/go-via/via-plugin-picocss/picocss"
 	. "github.com/ryanhamamura/via/h"
 )
 
 func main() {
 	v := via.New()
 
+	v.Config(via.Options{
+		// Plugins: []via.Plugin{picocss.Default},
+	})
+
 	v.Page("/counters/{counter_id}/{start_at_step}", func(c *via.Context) {
 
 		counterID := c.GetPathParam("counter_id")

internal/examples/picocss/main.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"github.com/ryanhamamura/via"
+	// "github.com/go-via/via-plugin-picocss/picocss"
 	"github.com/ryanhamamura/via/h"
 )
 
@@ -12,6 +13,11 @@ func main() {
 
 	v.Config(via.Options{
 		DocumentTitle: "Via Counter",
+		// Plugin is placed here. Use picocss.WithOptions(pococss.Options) to add the plugin
+		// with a different color theme or to enable a classes for a wide range of colors.
+		// Plugins: []via.Plugin{
+		// 	picocss.Default,
+		// },
 	})
 
 	v.Page("/", func(c *via.Context) {

internal/examples/realtimechart/main.go

@@ -6,6 +6,7 @@ import (
 	"time"
 
 	"github.com/ryanhamamura/via"
+	// "github.com/go-via/via-plugin-picocss/picocss"
 	"github.com/ryanhamamura/via/h"
 )
 
@@ -15,6 +16,9 @@ func main() {
 	v.Config(via.Options{
 		LogLevel: via.LogLevelDebug,
 		DevMode: true,
+		Plugins: []via.Plugin{
+			// picocss.Default,
+		},
 	})
 
 	v.AppendToHead(

internal/examples/shakespeare/main.go

@@ -6,9 +6,9 @@ import (
 	"log"
 	"time"
 
-	_ "github.com/mattn/go-sqlite3"
 	"github.com/ryanhamamura/via"
 	"github.com/ryanhamamura/via/h"
+	_ "github.com/mattn/go-sqlite3"
 )
 
 type DataSource interface {
@@ -22,9 +22,6 @@ type ShakeDB struct {
 	findByTextStmt *sql.Stmt
 }
 
-// Prepare opens shake.db, a ~22 MB SQLite database of Shakespeare's works.
-// Download from https://github.com/nicholasgasior/gopher-fizzbuzz/raw/master/shake.db
-// and place it in this directory before running.
 func (shakeDB *ShakeDB) Prepare() {
 	db, err := sql.Open("sqlite3", "shake.db")
 	if err != nil {

maplibre/js.go

@@ -179,33 +179,10 @@ func initScript(m *Map) string {
 // markerBodyJS generates JS to add a marker, assuming `map` is in scope.
 func markerBodyJS(mapID, markerID string, mk Marker) string {
 	var b strings.Builder
-
-	// Use a wrapper div for custom elements so MapLibre rotates the div
-	// while we can independently flip the inner element to prevent inversion.
-	if mk.Element != "" {
-		b.WriteString(fmt.Sprintf(
-			`var _mkEl=document.createElement('div');`+
-				`_mkEl.style.display='inline-block';_mkEl.style.lineHeight='0';`+
-				`_mkEl.innerHTML=%s;`,
-			jsonStr(mk.Element)))
-	}
-
 	opts := "{"
-	if mk.Element != "" {
+	if mk.Color != "" {
-		opts += `element:_mkEl,`
-	} else if mk.Color != "" {
 		opts += fmt.Sprintf(`color:%s,`, jsonStr(mk.Color))
 	}
-	if mk.Anchor != "" {
-		opts += fmt.Sprintf(`anchor:%s,`, jsonStr(mk.Anchor))
-	}
-	// When both Element and RotationSignal are set, skip initial rotation
-	// in opts — we apply it post-creation with flip normalization.
-	if mk.RotationSignal != nil && mk.Element == "" {
-		opts += fmt.Sprintf(`rotation:%s,`, mk.RotationSignal.String())
-	} else if mk.RotationSignal == nil && mk.Rotation != 0 {
-		opts += fmt.Sprintf(`rotation:%s,`, formatFloat(mk.Rotation))
-	}
 	if mk.Draggable {
 		opts += `draggable:true,`
 	}
@@ -220,15 +197,6 @@ func markerBodyJS(mapID, markerID string, mk Marker) string {
 			opts, formatFloat(mk.LngLat.Lng), formatFloat(mk.LngLat.Lat)))
 	}
 
-	// Apply initial rotation with flip normalization for custom elements.
-	if mk.RotationSignal != nil && mk.Element != "" {
-		b.WriteString(fmt.Sprintf(
-			`var _r=%s,_f=_r>90||_r<-90;if(_f)_r=_r>0?_r-180:_r+180;`+
-				`mk.setRotation(_r);`+
-				`var _ch=_mkEl.firstElementChild;if(_ch&&_f)_ch.style.transform='scaleX(-1)';`,
-			mk.RotationSignal.String()))
-	}
-
 	if mk.Popup != nil {
 		b.WriteString(popupConstructorJS(*mk.Popup, "pk"))
 		b.WriteString(`mk.setPopup(pk);`)
@@ -267,31 +235,14 @@ func dragendHandlerJS(mapID, markerID string, mk Marker) string {
 func markerEffectExpr(mapID, markerID string, mk Marker) string {
 	// Read signals before the guard so Datastar tracks them as dependencies
 	// even when the map/marker hasn't loaded yet on first evaluation.
-	var b strings.Builder
+	return fmt.Sprintf(
-	b.WriteString(fmt.Sprintf(`var lng=$%s,lat=$%s;`, mk.LngSignal.ID(), mk.LatSignal.ID()))
+		`var lng=$%s,lat=$%s;`+
-	if mk.RotationSignal != nil {
-		b.WriteString(fmt.Sprintf(`var rot=$%s;`, mk.RotationSignal.ID()))
-	}
-	b.WriteString(fmt.Sprintf(
 			`var m=window.__via_maps&&window.__via_maps[%s];`+
-			`if(m&&m._via_markers[%[2]s]){`+
+			`if(m&&m._via_markers[%s]){`+
-			`m._via_markers[%[2]s].setLngLat([lng,lat])`,
+			`m._via_markers[%s].setLngLat([lng,lat])}`,
-		jsonStr(mapID), jsonStr(markerID)))
+		mk.LngSignal.ID(), mk.LatSignal.ID(),
-	if mk.RotationSignal != nil && mk.Element != "" {
+		jsonStr(mapID), jsonStr(markerID), jsonStr(markerID),
-		// Normalize rotation to [-90,90] and horizontally flip the inner
+	)
-		// element when |rotation| > 90° to prevent upside-down markers.
-		b.WriteString(fmt.Sprintf(
-			`;var _mk=m._via_markers[%[1]s],_f=rot>90||rot<-90;`+
-				`if(_f)rot=rot>0?rot-180:rot+180;`+
-				`_mk.setRotation(rot);`+
-				`var _ch=_mk.getElement().firstElementChild;`+
-				`if(_ch)_ch.style.transform=_f?'scaleX(-1)':''`,
-			jsonStr(markerID)))
-	} else if mk.RotationSignal != nil {
-		b.WriteString(fmt.Sprintf(`;m._via_markers[%s].setRotation(rot)`, jsonStr(markerID)))
-	}
-	b.WriteString(`}`)
-	return b.String()
 }
 
 // addMarkerJS generates a self-contained IIFE to add a marker post-render.

maplibre/maplibre.go

@@ -122,18 +122,13 @@ func (m *Map) Element(extra ...h.H) h.H {
 		}
 	}
 
-	// Hidden inputs for signal-backed marker position/rotation writeback
+	// Hidden inputs for signal-backed marker position writeback (drag → signal)
 	for _, me := range m.markers {
 		if me.marker.LngSignal != nil && me.marker.LatSignal != nil {
 			children = append(children,
 				h.Input(h.Type("hidden"), me.marker.LngSignal.Bind()),
 				h.Input(h.Type("hidden"), me.marker.LatSignal.Bind()),
 			)
-			if me.marker.RotationSignal != nil {
-				children = append(children,
-					h.Input(h.Type("hidden"), me.marker.RotationSignal.Bind()),
-				)
-			}
 		}
 	}
 

maplibre/types.go

@@ -302,28 +302,11 @@ type Marker struct {
 	Draggable bool
 	Popup     *Popup
 
-	// Element is raw HTML/SVG used as a custom marker instead of the
-	// default pin. When set, Color is ignored.
-	// Do not pass untrusted user input without sanitizing it first.
-	Element string
-
-	// Anchor controls which part of the element sits at the coordinate.
-	// Values: "center" (default for custom elements), "bottom" (default
-	// for the pin), "top", "left", "right", "top-left", etc.
-	Anchor string
-
-	// Rotation is clockwise degrees. Useful for directional icons (ships, vehicles).
-	// Ignored when RotationSignal is set.
-	Rotation float64
-
 	// Signal-backed position. When set, signals drive marker position reactively.
 	// Initial position is read from the signal values. LngLat is ignored when signals are set.
 	// If Draggable is true, drag updates write back to these signals.
 	LngSignal *via.Signal
 	LatSignal *via.Signal
-
-	// RotationSignal drives marker rotation reactively. When set, Rotation is ignored.
-	RotationSignal *via.Signal
 }
 
 // Popup describes a map popup.

signal.go

@@ -80,3 +80,4 @@ func (s *Signal) Int() int {
 	}
 	return 0
 }
+

signal_test.go

@@ -1,6 +1,7 @@
 package via
 
 import (
+	//	"net/http/httptest"
 	"testing"
 
 	"github.com/ryanhamamura/via/h"

via.go

@@ -439,39 +439,36 @@ func (v *V) ensureDatastarHandler() {
 	})
 }
 
-func loadDevModeMap(path string) map[string]string {
-	m := make(map[string]string)
-	file, err := os.Open(path)
-	if err != nil {
-		return m
-	}
-	defer file.Close()
-	json.NewDecoder(file).Decode(&m)
-	return m
-}
-
-func saveDevModeMap(path string, m map[string]string) error {
-	file, err := os.Create(path)
-	if err != nil {
-		return err
-	}
-	defer file.Close()
-	return json.NewEncoder(file).Encode(m)
-}
-
 func (v *V) devModePersist(c *Context) {
 	p := filepath.Join(".via", "devmode", "ctx.json")
 	if err := os.MkdirAll(filepath.Dir(p), 0755); err != nil {
 		v.logFatal("failed to create directory for devmode files: %v", err)
 	}
 
-	ctxRegMap := loadDevModeMap(p)
+	// load persisted list from file, or empty list if file not found
+	file, err := os.Open(p)
+	ctxRegMap := make(map[string]string)
+	if err == nil {
+		json.NewDecoder(file).Decode(&ctxRegMap)
+	}
+	file.Close()
+
+	// add ctx to persisted list
 	if _, ok := ctxRegMap[c.id]; !ok {
 		ctxRegMap[c.id] = c.route
 	}
 
-	if err := saveDevModeMap(p, ctxRegMap); err != nil {
+	// write persisted list to file
-		v.logErr(c, "devmode failed to persist ctx: %v", err)
+	file, err = os.Create(p)
+	if err != nil {
+		v.logErr(c, "devmode failed to percist ctx: %v", err)
+
+	}
+	defer file.Close()
+
+	encoder := json.NewEncoder(file)
+	if err := encoder.Encode(ctxRegMap); err != nil {
+		v.logErr(c, "devmode failed to persist ctx")
 	}
 	v.logDebug(c, "devmode persisted ctx to file")
 }
@@ -479,11 +476,27 @@ func (v *V) devModePersist(c *Context) {
 func (v *V) devModeRemovePersisted(c *Context) {
 	p := filepath.Join(".via", "devmode", "ctx.json")
 
-	ctxRegMap := loadDevModeMap(p)
+	// load persisted list from file, or empty list if file not found
+	file, err := os.Open(p)
+	ctxRegMap := make(map[string]string)
+	if err == nil {
+		json.NewDecoder(file).Decode(&ctxRegMap)
+	}
+	file.Close()
+
 	delete(ctxRegMap, c.id)
 
-	if err := saveDevModeMap(p, ctxRegMap); err != nil {
+	// write persisted list to file
-		v.logErr(c, "devmode failed to remove persisted ctx: %v", err)
+	file, err = os.Create(p)
+	if err != nil {
+		v.logErr(c, "devmode failed to remove percisted ctx: %v", err)
+
+	}
+	defer file.Close()
+
+	encoder := json.NewEncoder(file)
+	if err := encoder.Encode(ctxRegMap); err != nil {
+		v.logErr(c, "devmode failed to remove persisted ctx")
 	}
 	v.logDebug(c, "devmode removed persisted ctx from file")
 }