fix(danmuku): [PKG-DANMUKU-11] start visible lifetime after Worker placement

docs/compiled/artplayer-plugin-danmuku.js

@@ -4,4 +4,4 @@
  * (c) 2017-2026 Harvey Zhao
  * Released under the MIT License.
  */
-!function(t,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"==typeof define&&define.amd?(t.artplayerPluginDanmuku=e(),define(function(){return t.artplayerPluginDanmuku})):(t="undefined"!==typeof globalThis?globalThis:t||self).artplayerPluginDanmuku=e()}(this,function(){"use strict";function t(t){return t instanceof Promise||"[object Promise]"===Object.prototype.toString.call(t)}function e(t){switch(t){case 1:case 2:case 3:default:return 0;case 4:return 2;case 5:return 1}}function i(t){if("string"!==typeof t)return[];const i=t.matchAll(/<d[^>]*?p="(?<p>[^"]+)"[^>]*>(?<text>.*?)<\/d>/gs);return Array.from(i).map(t=>{const i=t.groups.p.split(",");if(i.length>=8){return{text:t.groups.text.trim().replaceAll("&quot;",'"').replaceAll("&apos;","'").replaceAll("&lt;","<").replaceAll("&gt;",">").replaceAll("&amp;","&"),time:Number(i[0]),mode:e(Number(i[1])),fontSize:Number(i[2]),color:`#${Number(i[3]).toString(16)}`,timestamp:Number(i[4]),pool:Number(i[5]),userID:i[6],rowID:Number(i[7])}}return null}).filter(Boolean)}function n({data:t}){const{xml:e,id:n}=t,a=i(e);globalThis.postMessage({danmus:a,id:n})}let a=0;function s(t,{signal:s,onCancel:r}={}){return new Promise((o,l)=>{let d,c,p,h=!1;const u=++a,m=()=>g(void 0,function(t){if(void 0!==t?.reason)return t.reason;const e=new Error("Bilibili Danmu loading cancelled");return e.name="AbortError",e}(s));function f(){let t,e=!1;try{if(d){const t=d;d=void 0,t.onmessage=null,t.onerror=null,t.onmessageerror=null,t.terminate()}}catch(i){t=i,e=!0}if(void 0!==c){const n=c;c=void 0;try{URL.revokeObjectURL(n)}catch(i){e||(t=i),e=!0}}if(e)throw t}function g(t,e){if(h)return;h=!0;let i=arguments.length>1;s?.removeEventListener("abort",m),p?.();try{f()}catch(n){i||(e=n),i=!0}i?l(e):o(t)}function y(t,e){if(!h){console.error("Error parsing Bilibili Danmu:",e);try{g(i(t))}catch(n){g(void 0,n)}}}s?.aborted?m():(s?.addEventListener("abort",m),p=r?.(m),h?p?.():async function(){const a=s?await fetch(t,{signal:s}):await fetch(t);if(h)return;const r=await a.text();if(!h)try{const t=`\n          ${e.toString()}\n          ${i.toString()}\n          onmessage = ${n.toString()}\n        `;if(c=URL.createObjectURL(new Blob([t],{type:"application/javascript"})),h)return void f();if(d=new Worker(c),h)return void f();d.onmessage=t=>{if(h||t.data?.id!==u)return;const{danmus:e}=t.data;Array.isArray(e)?g(e):g(void 0,new Error("Invalid Bilibili Danmu worker response"))},d.onerror=t=>{t.preventDefault?.(),y(r,t.error||t)},d.onmessageerror=t=>y(r,t.error||t),d.postMessage({xml:r,id:u})}catch(o){y(r,o)}}().catch(t=>g(void 0,t)))})}const r=new WeakMap,o=Symbol("cancelled danmuku input");function l(t){return r.has(t)||r.set(t,{closed:!1,tasks:new Set,emitting:[]}),r.get(t)}function d(t){const e=l(t),i=e.emitting[e.emitting.length-1];return!e.closed&&!t.art.isDestroy&&(!i||i.active())}function c(t){const e=l(t);e.closed=!0;for(const i of[...e.tasks])i.cancel()}function p(t,e,i){const n=t.states[e]||[];for(let a=0;a<n.length;a++)i(n[a]);return n}class h{constructor(t){this.owner=t,this.nodes=new Set}acquire(){const t=this.owner.$refs.pop()||document.createElement("div");return t.style.cssText=this.owner.constructor.cssText,t.dataset.mode="",t.dataset.id="",t.className="",this.nodes.add(t),t}get visibles(){const t=[],{clientWidth:e}=this.owner.$player,i=this.owner.getLeft(this.owner.$player);return this.owner.filter("emit",n=>{const a=n.$ref.offsetTop,s=this.owner.getLeft(n.$ref)-i,r=n.$ref.clientHeight,o=n.$ref.clientWidth,l=s+o,d=e-l,c=l/n.$restTime,p={};p.top=a,p.left=s,p.height=r,p.width=o,p.right=d,p.speed=c,p.distance=l,p.time=n.$restTime,p.mode=n.mode,t.push(p)}),t}left(t){const e=t.getBoundingClientRect();return this.owner.isRotate?e.top:e.left}makeWait(t){this.owner.setState(t,"wait"),t.$ref&&(t.$ref.style.cssText=this.owner.constructor.cssText,t.$ref.style.visibility="hidden",t.$ref.style.marginLeft="0px",t.$ref.style.transform="translateX(0px)",t.$ref.style.transition="transform 0s linear 0s",this.owner.$refs.push(t.$ref),t.$ref=null)}resize(){const{clientWidth:t}=this.owner.$player;this.owner.filter("stop",e=>{if(0===e.mode)e.$ref.style.left=`${t}px`}),this.owner.filter("emit",e=>{switch(e.$lastStartTime=Date.now(),e.mode){case 0:{const i=t+e.$ref.clientWidth;e.$ref.style.left=`${t}px`,e.$ref.style.transform=`translateX(${-i}px)`,e.$ref.style.transition=`transform ${e.$restTime}s linear 0s`;break}}})}continue(){const{clientWidth:t}=this.owner.$player;return this.owner.filter("stop",e=>{switch(this.owner.setState(e,"emit"),e.$lastStartTime=Date.now(),e.mode){case 0:{const i=t+e.$ref.clientWidth;e.$ref.style.transform=`translateX(${-i}px)`,e.$ref.style.transition=`transform ${e.$restTime}s linear 0s`;break}}}),this}suspend(){const{clientWidth:t}=this.owner.$player;return this.owner.filter("emit",e=>{switch(this.owner.setState(e,"stop"),e.mode){case 0:{const i=t-(this.owner.getLeft(e.$ref)-this.owner.getLeft(this.owner.$player));e.$ref.style.transform=`translLine truncated
+!function(t,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"==typeof define&&define.amd?(t.artplayerPluginDanmuku=e(),define(function(){return t.artplayerPluginDanmuku})):(t="undefined"!==typeof globalThis?globalThis:t||self).artplayerPluginDanmuku=e()}(this,function(){"use strict";function t(t){return t instanceof Promise||"[object Promise]"===Object.prototype.toString.call(t)}function e(t){switch(t){case 1:case 2:case 3:default:return 0;case 4:return 2;case 5:return 1}}function i(t){if("string"!==typeof t)return[];const i=t.matchAll(/<d[^>]*?p="(?<p>[^"]+)"[^>]*>(?<text>.*?)<\/d>/gs);return Array.from(i).map(t=>{const i=t.groups.p.split(",");if(i.length>=8){return{text:t.groups.text.trim().replaceAll("&quot;",'"').replaceAll("&apos;","'").replaceAll("&lt;","<").replaceAll("&gt;",">").replaceAll("&amp;","&"),time:Number(i[0]),mode:e(Number(i[1])),fontSize:Number(i[2]),color:`#${Number(i[3]).toString(16)}`,timestamp:Number(i[4]),pool:Number(i[5]),userID:i[6],rowID:Number(i[7])}}return null}).filter(Boolean)}function n({data:t}){const{xml:e,id:n}=t,a=i(e);globalThis.postMessage({danmus:a,id:n})}let a=0;function s(t,{signal:s,onCancel:r}={}){return new Promise((o,l)=>{let d,c,p,h=!1;const u=++a,m=()=>g(void 0,function(t){if(void 0!==t?.reason)return t.reason;const e=new Error("Bilibili Danmu loading cancelled");return e.name="AbortError",e}(s));function f(){let t,e=!1;try{if(d){const t=d;d=void 0,t.onmessage=null,t.onerror=null,t.onmessageerror=null,t.terminate()}}catch(i){t=i,e=!0}if(void 0!==c){const n=c;c=void 0;try{URL.revokeObjectURL(n)}catch(i){e||(t=i),e=!0}}if(e)throw t}function g(t,e){if(h)return;h=!0;let i=arguments.length>1;s?.removeEventListener("abort",m),p?.();try{f()}catch(n){i||(e=n),i=!0}i?l(e):o(t)}function y(t,e){if(!h){console.error("Error parsing Bilibili Danmu:",e);try{g(i(t))}catch(n){g(void 0,n)}}}s?.aborted?m():(s?.addEventListener("abort",m),p=r?.(m),h?p?.():async function(){const a=s?await fetch(t,{signal:s}):await fetch(t);if(h)return;const r=await a.text();if(!h)try{const t=`\n          ${e.toString()}\n          ${i.toString()}\n          onmessage = ${n.toString()}\n        `;if(c=URL.createObjectURL(new Blob([t],{type:"application/javascript"})),h)return void f();if(d=new Worker(c),h)return void f();d.onmessage=t=>{if(h||t.data?.id!==u)return;const{danmus:e}=t.data;Array.isArray(e)?g(e):g(void 0,new Error("Invalid Bilibili Danmu worker response"))},d.onerror=t=>{t.preventDefault?.(),y(r,t.error||t)},d.onmessageerror=t=>y(r,t.error||t),d.postMessage({xml:r,id:u})}catch(o){y(r,o)}}().catch(t=>g(void 0,t)))})}const r=new WeakMap,o=Symbol("cancelled danmuku input");function l(t){return r.has(t)||r.set(t,{closed:!1,tasks:new Set,emitting:[]}),r.get(t)}function d(t){const e=l(t),i=e.emitting[e.emitting.length-1];return!e.closed&&!t.art.isDestroy&&(!i||i.active())}function c(t){const e=l(t);e.closed=!0;for(const i of[...e.tasks])i.cancel()}function p(t,e,i){const n=t.states[e]||[];for(let a=0;a<n.length;a++)i(n[a]);return n}class h{constructor(t){this.owner=t,this.nodes=new Set}acquire(){const t=this.owner.$refs.pop()||document.createElement("div");return t.style.cssText=this.owner.constructor.cssText,t.dataset.mode="",t.dataset.id="",t.className="",this.nodes.add(t),t}get visibles(){const t=[],{clientWidth:e}=this.owner.$player,i=this.owner.getLeft(this.owner.$player);return this.owner.filter("emit",n=>{const a=n.$ref.offsetTop,s=this.owner.getLeft(n.$ref)-i,r=n.$ref.clientHeight,o=n.$ref.clientWidth,l=s+o,d=e-l,c=l/n.$restTime,p={};p.top=a,p.left=s,p.height=r,p.width=o,p.right=d,p.speed=c,p.distance=l,p.time=n.$restTime,p.mode=n.mode,t.push(p)}),t}left(t){const e=t.getBoundingClientRect();return this.owner.isRotate?e.top:e.left}makeWait(t){this.owner.setState(t,"wait"),t.$ref&&(t.$ref.style.cssText=this.owner.constructor.cssText,t.$ref.style.visibility="hidden",t.$ref.style.marginLeft="0px",t.$ref.style.transform="translateX(0px)",t.$ref.style.transition="transform 0s linear 0s",this.owner.$refs.push(t.$ref),t.$ref=null)}resize(){const{clientWidth:t}=this.owner.$player;this.owner.filter("stop",e=>{if(0===e.mode)e.$ref.style.left=`${t}px`}),this.owner.filter("emit",e=>{switch(e.$lastStartTime=Date.now(),e.mode){case 0:{const i=t+e.$ref.clientWidth;e.$ref.style.left=`${t}px`,e.$ref.style.transform=`translateX(${-i}px)`,e.$ref.style.transition=`transform ${e.$restTime}s linear 0s`;break}}})}continue(){const{clientWidth:t}=this.owner.$player;return this.owner.filter("stop",e=>{switch(this.owner.setState(e,"emit"),e.$lastStartTime=Date.now(),e.mode){case 0:{const i=t+e.$ref.clientWidth;e.$ref.style.transform=`translateX(${-i}px)`,e.$ref.style.transition=`transform ${e.$restTime}s linear 0s`;break}}}),this}suspend(){const{clientWidth:t}=this.owner.$player;return this.owner.filter("emit",e=>{switch(this.owner.setState(e,"stop"),e.mode){case 0:{const i=t-(this.owner.getLeft(e.$ref)-this.owner.getLeft(this.owner.$player));e.$ref.style.transform=`translLine truncated

docs/compiled/artplayer-plugin-danmuku.legacy.js

@@ -4,4 +4,4 @@
  * (c) 2017-2026 Harvey Zhao
  * Released under the MIT License.
  */
-!function(t,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"==typeof define&&define.amd?(t.artplayerPluginDanmuku=e(),define(function(){return t.artplayerPluginDanmuku})):(t="undefined"!==typeof globalThis?globalThis:t||self).artplayerPluginDanmuku=e()}(this,function(){"use strict";var t=Object.defineProperty,e=Object.defineProperties,i=Object.getOwnPropertyDescriptors,n=Object.getOwnPropertySymbols,a=Object.prototype.hasOwnProperty,s=Object.prototype.propertyIsEnumerable,r=Math.pow,o=(e,i,n)=>i in e?t(e,i,{enumerable:!0,configurable:!0,writable:!0,value:n}):e[i]=n,l=(t,e)=>{for(var i in e||(e={}))a.call(e,i)&&o(t,i,e[i]);if(n)for(var i of n(e))s.call(e,i)&&o(t,i,e[i]);return t},d=(t,n)=>e(t,i(n)),c=(t,e,i)=>new Promise((n,a)=>{var s=t=>{try{o(i.next(t))}catch(e){a(e)}},r=t=>{try{o(i.throw(t))}catch(e){a(e)}},o=t=>t.done?n(t.value):Promise.resolve(t.value).then(s,r);o((i=i.apply(t,e)).next())});function p(t){return t instanceof Promise||"[object 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Error("Bilibili Danmu loading cancelled");return e.name="AbortError",e}(e));function g(){let t,e=!1;try{if(s){const t=s;s=void 0,t.onmessage=null,t.onerror=null,t.onmessageerror=null,t.terminate()}}catch(i){t=i,e=!0}if(void 0!==r){const n=r;r=void 0;try{URL.revokeObjectURL(n)}catch(i){e||(t=i),e=!0}}if(e)throw t}function y(t,i){if(l)return;l=!0;let s=arguments.length>1;null==e||e.removeEventListener("abort",p),null==o||o();try{g()}catch(r){s||(i=r),s=!0}s?a(i):n(t)}function v(t,e){if(!l){console.error("Error parsing Bilibili Danmu:",e);try{y(u(t))}catch(i){y(void 0,i)}}}(null==e?void 0:e.aborted)?p():(null==e||e.addEventListener("abort",p),o=null==i?void 0:i(p),l?null==o||o():function(){return c(this,null,function*(){const i=e?yield fetch(t,{signal:e}):yield fetch(t);if(l)return;const n=yield i.text();if(!l)try{const t=`\n          ${h.toString()}\n          ${u.toString()}\n          onmessage = ${m.toString()}\n        `;if(r=URL.createObjectURL(new Blob([t],{type:"application/javascript"})),l)return void g();if(s=new Worker(r),l)return void g();s.onmessage=t=>{var e;if(l||(null==(e=t.data)?void 0:e.id)!==d)return;const{danmus:i}=t.data;Array.isArray(i)?y(i):y(void 0,new Error("Invalid Bilibili Danmu worker response"))},s.onerror=t=>{var e;null==(e=t.preventDefault)||e.call(t),v(n,t.error||t)},s.onmessageerror=t=>v(n,t.error||t),s.postMessage({xml:n,id:d})}catch(a){v(n,a)}})}().catch(t=>y(void 0,t)))})}const y=new WeakMap,v=Symbol("cancelled danmuku input");function w(t){return y.has(t)||y.set(t,{closed:!1,tasks:new Set,emitting:[]}),y.get(t)}function k(t){const e=w(t),i=e.emitting[e.emitting.length-1];return!e.closed&&!t.art.isDestroy&&(!i||i.active())}function x(t){const e=w(t);e.closed=!0;for(const i of[...e.tasks])i.cancel()}function b(t,e,i){const n=t.states[e]||[];for(let a=0;a<n.length;a++)i(n[a]);return n}class ${constructor(t){this.owner=t,this.nodes=new Set}acquire(){const t=this.owner.$refs.pop()||document.createElement("div");return t.style.cssText=this.owner.constructor.cssText,t.dataset.mode="",t.dataset.id="",t.className="",this.nodes.add(t),t}get visibles(){const t=[],{clientWidth:e}=this.owner.$player,i=this.owner.getLeft(this.owner.$player);return this.owner.filter("emit",n=>{const a=n.$ref.offsetTop,s=this.owner.getLeft(n.$ref)-i,r=n.$ref.clientHeight,o=n.$ref.clientWidth,l=s+o,d=e-l,c=l/n.$restTime,p={};p.top=a,p.left=s,p.height=r,p.width=o,p.right=d,p.speed=c,p.distance=l,p.time=n.$restTime,p.mode=n.mode,t.push(p)}),t}left(t){const e=t.getBoundingClientRect();return this.owner.isRotate?e.top:e.left}makeWait(t){this.owner.setState(t,"wait"),t.$ref&&(t.$ref.style.cssText=this.owner.constructor.cssText,t.$ref.style.visibility="hidden",t.$ref.style.marginLeft="0px",t.$ref.style.transform="translateX(0px)",t.$ref.style.transition="transform 0s linear 0s",this.owner.$refs.push(t.$ref),t.$ref=null)}resize(){const{clientWidth:t}=this.owner.$player;this.owner.filter("stop",e=>{if(0===e.mode)e.$ref.style.left=`${t}px`}),this.owner.filter("emitLine truncated
+!function(t,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"==typeof define&&define.amd?(t.artplayerPluginDanmuku=e(),define(function(){return t.artplayerPluginDanmuku})):(t="undefined"!==typeof globalThis?globalThis:t||self).artplayerPluginDanmuku=e()}(this,function(){"use strict";var t=Object.defineProperty,e=Object.defineProperties,i=Object.getOwnPropertyDescriptors,n=Object.getOwnPropertySymbols,a=Object.prototype.hasOwnProperty,s=Object.prototype.propertyIsEnumerable,r=Math.pow,o=(e,i,n)=>i in e?t(e,i,{enumerable:!0,configurable:!0,writable:!0,value:n}):e[i]=n,l=(t,e)=>{for(var i in e||(e={}))a.call(e,i)&&o(t,i,e[i]);if(n)for(var i of n(e))s.call(e,i)&&o(t,i,e[i]);return t},d=(t,n)=>e(t,i(n)),c=(t,e,i)=>new Promise((n,a)=>{var s=t=>{try{o(i.next(t))}catch(e){a(e)}},r=t=>{try{o(i.throw(t))}catch(e){a(e)}},o=t=>t.done?n(t.value):Promise.resolve(t.value).then(s,r);o((i=i.apply(t,e)).next())});function p(t){return t instanceof Promise||"[object 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Error("Bilibili Danmu loading cancelled");return e.name="AbortError",e}(e));function g(){let t,e=!1;try{if(s){const t=s;s=void 0,t.onmessage=null,t.onerror=null,t.onmessageerror=null,t.terminate()}}catch(i){t=i,e=!0}if(void 0!==r){const n=r;r=void 0;try{URL.revokeObjectURL(n)}catch(i){e||(t=i),e=!0}}if(e)throw t}function y(t,i){if(l)return;l=!0;let s=arguments.length>1;null==e||e.removeEventListener("abort",p),null==o||o();try{g()}catch(r){s||(i=r),s=!0}s?a(i):n(t)}function v(t,e){if(!l){console.error("Error parsing Bilibili Danmu:",e);try{y(u(t))}catch(i){y(void 0,i)}}}(null==e?void 0:e.aborted)?p():(null==e||e.addEventListener("abort",p),o=null==i?void 0:i(p),l?null==o||o():function(){return c(this,null,function*(){const i=e?yield fetch(t,{signal:e}):yield fetch(t);if(l)return;const n=yield i.text();if(!l)try{const t=`\n          ${h.toString()}\n          ${u.toString()}\n          onmessage = ${m.toString()}\n        `;if(r=URL.createObjectURL(new Blob([t],{type:"application/javascript"})),l)return void g();if(s=new Worker(r),l)return void g();s.onmessage=t=>{var e;if(l||(null==(e=t.data)?void 0:e.id)!==d)return;const{danmus:i}=t.data;Array.isArray(i)?y(i):y(void 0,new Error("Invalid Bilibili Danmu worker response"))},s.onerror=t=>{var e;null==(e=t.preventDefault)||e.call(t),v(n,t.error||t)},s.onmessageerror=t=>v(n,t.error||t),s.postMessage({xml:n,id:d})}catch(a){v(n,a)}})}().catch(t=>y(void 0,t)))})}const y=new WeakMap,v=Symbol("cancelled danmuku input");function w(t){return y.has(t)||y.set(t,{closed:!1,tasks:new Set,emitting:[]}),y.get(t)}function k(t){const e=w(t),i=e.emitting[e.emitting.length-1];return!e.closed&&!t.art.isDestroy&&(!i||i.active())}function x(t){const e=w(t);e.closed=!0;for(const i of[...e.tasks])i.cancel()}function b(t,e,i){const n=t.states[e]||[];for(let a=0;a<n.length;a++)i(n[a]);return n}class ${constructor(t){this.owner=t,this.nodes=new Set}acquire(){const t=this.owner.$refs.pop()||document.createElement("div");return t.style.cssText=this.owner.constructor.cssText,t.dataset.mode="",t.dataset.id="",t.className="",this.nodes.add(t),t}get visibles(){const t=[],{clientWidth:e}=this.owner.$player,i=this.owner.getLeft(this.owner.$player);return this.owner.filter("emit",n=>{const a=n.$ref.offsetTop,s=this.owner.getLeft(n.$ref)-i,r=n.$ref.clientHeight,o=n.$ref.clientWidth,l=s+o,d=e-l,c=l/n.$restTime,p={};p.top=a,p.left=s,p.height=r,p.width=o,p.right=d,p.speed=c,p.distance=l,p.time=n.$restTime,p.mode=n.mode,t.push(p)}),t}left(t){const e=t.getBoundingClientRect();return this.owner.isRotate?e.top:e.left}makeWait(t){this.owner.setState(t,"wait"),t.$ref&&(t.$ref.style.cssText=this.owner.constructor.cssText,t.$ref.style.visibility="hidden",t.$ref.style.marginLeft="0px",t.$ref.style.transform="translateX(0px)",t.$ref.style.transition="transform 0s linear 0s",this.owner.$refs.push(t.$ref),t.$ref=null)}resize(){const{clientWidth:t}=this.owner.$player;this.owner.filter("stop",e=>{if(0===e.mode)e.$ref.style.left=`${t}px`}),this.owner.filter("emitLine truncated

docs/compiled/artplayer-plugin-danmuku.mjs

@@ -680,6 +680,7 @@ class Scheduler {
       if (!this.active(operation) || danmu.$ref !== ref)
         return;
       if (top !== void 0) {
+        danmu.$lastStartTime = Date.now();
         owner.setState(danmu, "emit");
         owner.renderer.place(danmu, ref, top, distance, clientWidth);
         operation.ref = null;

docs/uncompiled/artplayer-plugin-danmuku/index.js

@@ -676,6 +676,7 @@ var artplayerPluginDanmuku = (function() {
         if (!this.active(operation) || danmu.$ref !== ref)
           return;
         if (top !== void 0) {
+          danmu.$lastStartTime = Date.now();
           owner.setState(danmu, "emit");
           owner.renderer.place(danmu, ref, top, distance, clientWidth);
           operation.ref = null;

packages/artplayer-plugin-danmuku/ARCHITECTURE.md

@@ -154,6 +154,14 @@ playback enabled, new comments sample speed/playbackRate when allocated; active
 comments retain their assigned remaining seconds. Do not change these timing
 rules as incidental cleanup.
 
+Successful Worker placement resets the visible start timestamp. Hidden measurement
+and Worker waiting do not consume the CSS-visible duration; recording only before
+postMessage can recycle a slow reply's comment on its first visible frame. Keep the
+remaining lifetime and geometry speed assigned during preparation, and change only
+the visible origin after the cancellation/node-identity checks. The delayed Worker
+regression in `test/browser/danmuku-lifetime.spec.js` uses real geometry with a
+controlled request delay; it does not claim natural Worker starvation.
+
 A rejected `beforeVisible` reports its original error once and excludes that
 item from further attempts in the current run. Explicit start, reset, an
 invalidation or replacement callback permits another attempt if the item is

packages/artplayer-plugin-danmuku/dist/artplayer-plugin-danmuku.js

@@ -4,4 +4,4 @@
  * (c) 2017-2026 Harvey Zhao
  * Released under the MIT License.
  */
-!function(t,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"==typeof define&&define.amd?(t.artplayerPluginDanmuku=e(),define(function(){return t.artplayerPluginDanmuku})):(t="undefined"!==typeof globalThis?globalThis:t||self).artplayerPluginDanmuku=e()}(this,function(){"use strict";function t(t){return t instanceof Promise||"[object Promise]"===Object.prototype.toString.call(t)}function e(t){switch(t){case 1:case 2:case 3:default:return 0;case 4:return 2;case 5:return 1}}function i(t){if("string"!==typeof t)return[];const i=t.matchAll(/<d[^>]*?p="(?<p>[^"]+)"[^>]*>(?<text>.*?)<\/d>/gs);return Array.from(i).map(t=>{const i=t.groups.p.split(",");if(i.length>=8){return{text:t.groups.text.trim().replaceAll("&quot;",'"').replaceAll("&apos;","'").replaceAll("&lt;","<").replaceAll("&gt;",">").replaceAll("&amp;","&"),time:Number(i[0]),mode:e(Number(i[1])),fontSize:Number(i[2]),color:`#${Number(i[3]).toString(16)}`,timestamp:Number(i[4]),pool:Number(i[5]),userID:i[6],rowID:Number(i[7])}}return null}).filter(Boolean)}function n({data:t}){const{xml:e,id:n}=t,a=i(e);globalThis.postMessage({danmus:a,id:n})}let a=0;function s(t,{signal:s,onCancel:r}={}){return new Promise((o,l)=>{let d,c,p,h=!1;const u=++a,m=()=>g(void 0,function(t){if(void 0!==t?.reason)return t.reason;const e=new Error("Bilibili Danmu loading cancelled");return e.name="AbortError",e}(s));function f(){let t,e=!1;try{if(d){const t=d;d=void 0,t.onmessage=null,t.onerror=null,t.onmessageerror=null,t.terminate()}}catch(i){t=i,e=!0}if(void 0!==c){const n=c;c=void 0;try{URL.revokeObjectURL(n)}catch(i){e||(t=i),e=!0}}if(e)throw t}function g(t,e){if(h)return;h=!0;let i=arguments.length>1;s?.removeEventListener("abort",m),p?.();try{f()}catch(n){i||(e=n),i=!0}i?l(e):o(t)}function y(t,e){if(!h){console.error("Error parsing Bilibili Danmu:",e);try{g(i(t))}catch(n){g(void 0,n)}}}s?.aborted?m():(s?.addEventListener("abort",m),p=r?.(m),h?p?.():async function(){const a=s?await fetch(t,{signal:s}):await fetch(t);if(h)return;const r=await a.text();if(!h)try{const t=`\n          ${e.toString()}\n          ${i.toString()}\n          onmessage = ${n.toString()}\n        `;if(c=URL.createObjectURL(new Blob([t],{type:"application/javascript"})),h)return void f();if(d=new Worker(c),h)return void f();d.onmessage=t=>{if(h||t.data?.id!==u)return;const{danmus:e}=t.data;Array.isArray(e)?g(e):g(void 0,new Error("Invalid Bilibili Danmu worker response"))},d.onerror=t=>{t.preventDefault?.(),y(r,t.error||t)},d.onmessageerror=t=>y(r,t.error||t),d.postMessage({xml:r,id:u})}catch(o){y(r,o)}}().catch(t=>g(void 0,t)))})}const r=new WeakMap,o=Symbol("cancelled danmuku input");function l(t){return r.has(t)||r.set(t,{closed:!1,tasks:new Set,emitting:[]}),r.get(t)}function d(t){const e=l(t),i=e.emitting[e.emitting.length-1];return!e.closed&&!t.art.isDestroy&&(!i||i.active())}function c(t){const e=l(t);e.closed=!0;for(const i of[...e.tasks])i.cancel()}function p(t,e,i){const n=t.states[e]||[];for(let a=0;a<n.length;a++)i(n[a]);return n}class h{constructor(t){this.owner=t,this.nodes=new Set}acquire(){const t=this.owner.$refs.pop()||document.createElement("div");return t.style.cssText=this.owner.constructor.cssText,t.dataset.mode="",t.dataset.id="",t.className="",this.nodes.add(t),t}get visibles(){const t=[],{clientWidth:e}=this.owner.$player,i=this.owner.getLeft(this.owner.$player);return this.owner.filter("emit",n=>{const a=n.$ref.offsetTop,s=this.owner.getLeft(n.$ref)-i,r=n.$ref.clientHeight,o=n.$ref.clientWidth,l=s+o,d=e-l,c=l/n.$restTime,p={};p.top=a,p.left=s,p.height=r,p.width=o,p.right=d,p.speed=c,p.distance=l,p.time=n.$restTime,p.mode=n.mode,t.push(p)}),t}left(t){const e=t.getBoundingClientRect();return this.owner.isRotate?e.top:e.left}makeWait(t){this.owner.setState(t,"wait"),t.$ref&&(t.$ref.style.cssText=this.owner.constructor.cssText,t.$ref.style.visibility="hidden",t.$ref.style.marginLeft="0px",t.$ref.style.transform="translateX(0px)",t.$ref.style.transition="transform 0s linear 0s",this.owner.$refs.push(t.$ref),t.$ref=null)}resize(){const{clientWidth:t}=this.owner.$player;this.owner.filter("stop",e=>{if(0===e.mode)e.$ref.style.left=`${t}px`}),this.owner.filter("emit",e=>{switch(e.$lastStartTime=Date.now(),e.mode){case 0:{const i=t+e.$ref.clientWidth;e.$ref.style.left=`${t}px`,e.$ref.style.transform=`translateX(${-i}px)`,e.$ref.style.transition=`transform ${e.$restTime}s linear 0s`;break}}})}continue(){const{clientWidth:t}=this.owner.$player;return this.owner.filter("stop",e=>{switch(this.owner.setState(e,"emit"),e.$lastStartTime=Date.now(),e.mode){case 0:{const i=t+e.$ref.clientWidth;e.$ref.style.transform=`translateX(${-i}px)`,e.$ref.style.transition=`transform ${e.$restTime}s linear 0s`;break}}}),this}suspend(){const{clientWidth:t}=this.owner.$player;return this.owner.filter("emit",e=>{switch(this.owner.setState(e,"stop"),e.mode){case 0:{const i=t-(this.owner.getLeft(e.$ref)-this.owner.getLeft(this.owner.$player));e.$ref.style.transform=`translLine truncated
+!function(t,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"==typeof define&&define.amd?(t.artplayerPluginDanmuku=e(),define(function(){return t.artplayerPluginDanmuku})):(t="undefined"!==typeof globalThis?globalThis:t||self).artplayerPluginDanmuku=e()}(this,function(){"use strict";function t(t){return t instanceof Promise||"[object Promise]"===Object.prototype.toString.call(t)}function e(t){switch(t){case 1:case 2:case 3:default:return 0;case 4:return 2;case 5:return 1}}function i(t){if("string"!==typeof t)return[];const i=t.matchAll(/<d[^>]*?p="(?<p>[^"]+)"[^>]*>(?<text>.*?)<\/d>/gs);return Array.from(i).map(t=>{const i=t.groups.p.split(",");if(i.length>=8){return{text:t.groups.text.trim().replaceAll("&quot;",'"').replaceAll("&apos;","'").replaceAll("&lt;","<").replaceAll("&gt;",">").replaceAll("&amp;","&"),time:Number(i[0]),mode:e(Number(i[1])),fontSize:Number(i[2]),color:`#${Number(i[3]).toString(16)}`,timestamp:Number(i[4]),pool:Number(i[5]),userID:i[6],rowID:Number(i[7])}}return null}).filter(Boolean)}function n({data:t}){const{xml:e,id:n}=t,a=i(e);globalThis.postMessage({danmus:a,id:n})}let a=0;function s(t,{signal:s,onCancel:r}={}){return new Promise((o,l)=>{let d,c,p,h=!1;const u=++a,m=()=>g(void 0,function(t){if(void 0!==t?.reason)return t.reason;const e=new Error("Bilibili Danmu loading cancelled");return e.name="AbortError",e}(s));function f(){let t,e=!1;try{if(d){const t=d;d=void 0,t.onmessage=null,t.onerror=null,t.onmessageerror=null,t.terminate()}}catch(i){t=i,e=!0}if(void 0!==c){const n=c;c=void 0;try{URL.revokeObjectURL(n)}catch(i){e||(t=i),e=!0}}if(e)throw t}function g(t,e){if(h)return;h=!0;let i=arguments.length>1;s?.removeEventListener("abort",m),p?.();try{f()}catch(n){i||(e=n),i=!0}i?l(e):o(t)}function y(t,e){if(!h){console.error("Error parsing Bilibili Danmu:",e);try{g(i(t))}catch(n){g(void 0,n)}}}s?.aborted?m():(s?.addEventListener("abort",m),p=r?.(m),h?p?.():async function(){const a=s?await fetch(t,{signal:s}):await fetch(t);if(h)return;const r=await a.text();if(!h)try{const t=`\n          ${e.toString()}\n          ${i.toString()}\n          onmessage = ${n.toString()}\n        `;if(c=URL.createObjectURL(new Blob([t],{type:"application/javascript"})),h)return void f();if(d=new Worker(c),h)return void f();d.onmessage=t=>{if(h||t.data?.id!==u)return;const{danmus:e}=t.data;Array.isArray(e)?g(e):g(void 0,new Error("Invalid Bilibili Danmu worker response"))},d.onerror=t=>{t.preventDefault?.(),y(r,t.error||t)},d.onmessageerror=t=>y(r,t.error||t),d.postMessage({xml:r,id:u})}catch(o){y(r,o)}}().catch(t=>g(void 0,t)))})}const r=new WeakMap,o=Symbol("cancelled danmuku input");function l(t){return r.has(t)||r.set(t,{closed:!1,tasks:new Set,emitting:[]}),r.get(t)}function d(t){const e=l(t),i=e.emitting[e.emitting.length-1];return!e.closed&&!t.art.isDestroy&&(!i||i.active())}function c(t){const e=l(t);e.closed=!0;for(const i of[...e.tasks])i.cancel()}function p(t,e,i){const n=t.states[e]||[];for(let a=0;a<n.length;a++)i(n[a]);return n}class h{constructor(t){this.owner=t,this.nodes=new Set}acquire(){const t=this.owner.$refs.pop()||document.createElement("div");return t.style.cssText=this.owner.constructor.cssText,t.dataset.mode="",t.dataset.id="",t.className="",this.nodes.add(t),t}get visibles(){const t=[],{clientWidth:e}=this.owner.$player,i=this.owner.getLeft(this.owner.$player);return this.owner.filter("emit",n=>{const a=n.$ref.offsetTop,s=this.owner.getLeft(n.$ref)-i,r=n.$ref.clientHeight,o=n.$ref.clientWidth,l=s+o,d=e-l,c=l/n.$restTime,p={};p.top=a,p.left=s,p.height=r,p.width=o,p.right=d,p.speed=c,p.distance=l,p.time=n.$restTime,p.mode=n.mode,t.push(p)}),t}left(t){const e=t.getBoundingClientRect();return this.owner.isRotate?e.top:e.left}makeWait(t){this.owner.setState(t,"wait"),t.$ref&&(t.$ref.style.cssText=this.owner.constructor.cssText,t.$ref.style.visibility="hidden",t.$ref.style.marginLeft="0px",t.$ref.style.transform="translateX(0px)",t.$ref.style.transition="transform 0s linear 0s",this.owner.$refs.push(t.$ref),t.$ref=null)}resize(){const{clientWidth:t}=this.owner.$player;this.owner.filter("stop",e=>{if(0===e.mode)e.$ref.style.left=`${t}px`}),this.owner.filter("emit",e=>{switch(e.$lastStartTime=Date.now(),e.mode){case 0:{const i=t+e.$ref.clientWidth;e.$ref.style.left=`${t}px`,e.$ref.style.transform=`translateX(${-i}px)`,e.$ref.style.transition=`transform ${e.$restTime}s linear 0s`;break}}})}continue(){const{clientWidth:t}=this.owner.$player;return this.owner.filter("stop",e=>{switch(this.owner.setState(e,"emit"),e.$lastStartTime=Date.now(),e.mode){case 0:{const i=t+e.$ref.clientWidth;e.$ref.style.transform=`translateX(${-i}px)`,e.$ref.style.transition=`transform ${e.$restTime}s linear 0s`;break}}}),this}suspend(){const{clientWidth:t}=this.owner.$player;return this.owner.filter("emit",e=>{switch(this.owner.setState(e,"stop"),e.mode){case 0:{const i=t-(this.owner.getLeft(e.$ref)-this.owner.getLeft(this.owner.$player));e.$ref.style.transform=`translLine truncated

packages/artplayer-plugin-danmuku/dist/artplayer-plugin-danmuku.legacy.js

@@ -4,4 +4,4 @@
  * (c) 2017-2026 Harvey Zhao
  * Released under the MIT License.
  */
-!function(t,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"==typeof define&&define.amd?(t.artplayerPluginDanmuku=e(),define(function(){return t.artplayerPluginDanmuku})):(t="undefined"!==typeof globalThis?globalThis:t||self).artplayerPluginDanmuku=e()}(this,function(){"use strict";var t=Object.defineProperty,e=Object.defineProperties,i=Object.getOwnPropertyDescriptors,n=Object.getOwnPropertySymbols,a=Object.prototype.hasOwnProperty,s=Object.prototype.propertyIsEnumerable,r=Math.pow,o=(e,i,n)=>i in e?t(e,i,{enumerable:!0,configurable:!0,writable:!0,value:n}):e[i]=n,l=(t,e)=>{for(var i in e||(e={}))a.call(e,i)&&o(t,i,e[i]);if(n)for(var i of n(e))s.call(e,i)&&o(t,i,e[i]);return t},d=(t,n)=>e(t,i(n)),c=(t,e,i)=>new Promise((n,a)=>{var s=t=>{try{o(i.next(t))}catch(e){a(e)}},r=t=>{try{o(i.throw(t))}catch(e){a(e)}},o=t=>t.done?n(t.value):Promise.resolve(t.value).then(s,r);o((i=i.apply(t,e)).next())});function p(t){return t instanceof Promise||"[object Promise]"===Object.prototype.toString.call(t)}function h(t){switch(t){case 1:case 2:case 3:default:return 0;case 4:return 2;case 5:return 1}}function u(t){if("string"!==typeof t)return[];const e=new RegExp('<d[^>]*?p="(?<p>[^"]+)"[^>]*>(?<text>.*?)<\\/d>',"gs"),i=t.matchAll(e);return Array.from(i).map(t=>{const e=t.groups.p.split(",");if(e.length>=8){return{text:t.groups.text.trim().replaceAll("&quot;",'"').replaceAll("&apos;","'").replaceAll("&lt;","<").replaceAll("&gt;",">").replaceAll("&amp;","&"),time:Number(e[0]),mode:h(Number(e[1])),fontSize:Number(e[2]),color:`#${Number(e[3]).toString(16)}`,timestamp:Number(e[4]),pool:Number(e[5]),userID:e[6],rowID:Number(e[7])}}return null}).filter(Boolean)}function m({data:t}){const{xml:e,id:i}=t,n=u(e);globalThis.postMessage({danmus:n,id:i})}let f=0;function g(t,{signal:e,onCancel:i}={}){return new Promise((n,a)=>{let s,r,o,l=!1;const d=++f,p=()=>y(void 0,function(t){if(void 0!==(null==t?void 0:t.reason))return t.reason;const e=new Error("Bilibili Danmu loading cancelled");return e.name="AbortError",e}(e));function g(){let t,e=!1;try{if(s){const t=s;s=void 0,t.onmessage=null,t.onerror=null,t.onmessageerror=null,t.terminate()}}catch(i){t=i,e=!0}if(void 0!==r){const n=r;r=void 0;try{URL.revokeObjectURL(n)}catch(i){e||(t=i),e=!0}}if(e)throw t}function y(t,i){if(l)return;l=!0;let s=arguments.length>1;null==e||e.removeEventListener("abort",p),null==o||o();try{g()}catch(r){s||(i=r),s=!0}s?a(i):n(t)}function v(t,e){if(!l){console.error("Error parsing Bilibili Danmu:",e);try{y(u(t))}catch(i){y(void 0,i)}}}(null==e?void 0:e.aborted)?p():(null==e||e.addEventListener("abort",p),o=null==i?void 0:i(p),l?null==o||o():function(){return c(this,null,function*(){const i=e?yield fetch(t,{signal:e}):yield fetch(t);if(l)return;const n=yield i.text();if(!l)try{const t=`\n          ${h.toString()}\n          ${u.toString()}\n          onmessage = ${m.toString()}\n        `;if(r=URL.createObjectURL(new Blob([t],{type:"application/javascript"})),l)return void g();if(s=new Worker(r),l)return void g();s.onmessage=t=>{var e;if(l||(null==(e=t.data)?void 0:e.id)!==d)return;const{danmus:i}=t.data;Array.isArray(i)?y(i):y(void 0,new Error("Invalid Bilibili Danmu worker response"))},s.onerror=t=>{var e;null==(e=t.preventDefault)||e.call(t),v(n,t.error||t)},s.onmessageerror=t=>v(n,t.error||t),s.postMessage({xml:n,id:d})}catch(a){v(n,a)}})}().catch(t=>y(void 0,t)))})}const y=new WeakMap,v=Symbol("cancelled danmuku input");function w(t){return y.has(t)||y.set(t,{closed:!1,tasks:new Set,emitting:[]}),y.get(t)}function k(t){const e=w(t),i=e.emitting[e.emitting.length-1];return!e.closed&&!t.art.isDestroy&&(!i||i.active())}function x(t){const e=w(t);e.closed=!0;for(const i of[...e.tasks])i.cancel()}function b(t,e,i){const n=t.states[e]||[];for(let a=0;a<n.length;a++)i(n[a]);return n}class ${constructor(t){this.owner=t,this.nodes=new Set}acquire(){const t=this.owner.$refs.pop()||document.createElement("div");return t.style.cssText=this.owner.constructor.cssText,t.dataset.mode="",t.dataset.id="",t.className="",this.nodes.add(t),t}get visibles(){const t=[],{clientWidth:e}=this.owner.$player,i=this.owner.getLeft(this.owner.$player);return this.owner.filter("emit",n=>{const a=n.$ref.offsetTop,s=this.owner.getLeft(n.$ref)-i,r=n.$ref.clientHeight,o=n.$ref.clientWidth,l=s+o,d=e-l,c=l/n.$restTime,p={};p.top=a,p.left=s,p.height=r,p.width=o,p.right=d,p.speed=c,p.distance=l,p.time=n.$restTime,p.mode=n.mode,t.push(p)}),t}left(t){const e=t.getBoundingClientRect();return this.owner.isRotate?e.top:e.left}makeWait(t){this.owner.setState(t,"wait"),t.$ref&&(t.$ref.style.cssText=this.owner.constructor.cssText,t.$ref.style.visibility="hidden",t.$ref.style.marginLeft="0px",t.$ref.style.transform="translateX(0px)",t.$ref.style.transition="transform 0s linear 0s",this.owner.$refs.push(t.$ref),t.$ref=null)}resize(){const{clientWidth:t}=this.owner.$player;this.owner.filter("stop",e=>{if(0===e.mode)e.$ref.style.left=`${t}px`}),this.owner.filter("emitLine truncated
+!function(t,e){"object"===typeof exports&&"undefined"!==typeof module?module.exports=e():"function"==typeof define&&define.amd?(t.artplayerPluginDanmuku=e(),define(function(){return t.artplayerPluginDanmuku})):(t="undefined"!==typeof globalThis?globalThis:t||self).artplayerPluginDanmuku=e()}(this,function(){"use strict";var t=Object.defineProperty,e=Object.defineProperties,i=Object.getOwnPropertyDescriptors,n=Object.getOwnPropertySymbols,a=Object.prototype.hasOwnProperty,s=Object.prototype.propertyIsEnumerable,r=Math.pow,o=(e,i,n)=>i in e?t(e,i,{enumerable:!0,configurable:!0,writable:!0,value:n}):e[i]=n,l=(t,e)=>{for(var i in e||(e={}))a.call(e,i)&&o(t,i,e[i]);if(n)for(var i of n(e))s.call(e,i)&&o(t,i,e[i]);return t},d=(t,n)=>e(t,i(n)),c=(t,e,i)=>new Promise((n,a)=>{var s=t=>{try{o(i.next(t))}catch(e){a(e)}},r=t=>{try{o(i.throw(t))}catch(e){a(e)}},o=t=>t.done?n(t.value):Promise.resolve(t.value).then(s,r);o((i=i.apply(t,e)).next())});function p(t){return t instanceof Promise||"[object Promise]"===Object.prototype.toString.call(t)}function h(t){switch(t){case 1:case 2:case 3:default:return 0;case 4:return 2;case 5:return 1}}function u(t){if("string"!==typeof t)return[];const e=new RegExp('<d[^>]*?p="(?<p>[^"]+)"[^>]*>(?<text>.*?)<\\/d>',"gs"),i=t.matchAll(e);return Array.from(i).map(t=>{const e=t.groups.p.split(",");if(e.length>=8){return{text:t.groups.text.trim().replaceAll("&quot;",'"').replaceAll("&apos;","'").replaceAll("&lt;","<").replaceAll("&gt;",">").replaceAll("&amp;","&"),time:Number(e[0]),mode:h(Number(e[1])),fontSize:Number(e[2]),color:`#${Number(e[3]).toString(16)}`,timestamp:Number(e[4]),pool:Number(e[5]),userID:e[6],rowID:Number(e[7])}}return null}).filter(Boolean)}function m({data:t}){const{xml:e,id:i}=t,n=u(e);globalThis.postMessage({danmus:n,id:i})}let f=0;function g(t,{signal:e,onCancel:i}={}){return new Promise((n,a)=>{let s,r,o,l=!1;const d=++f,p=()=>y(void 0,function(t){if(void 0!==(null==t?void 0:t.reason))return t.reason;const e=new Error("Bilibili Danmu loading cancelled");return e.name="AbortError",e}(e));function g(){let t,e=!1;try{if(s){const t=s;s=void 0,t.onmessage=null,t.onerror=null,t.onmessageerror=null,t.terminate()}}catch(i){t=i,e=!0}if(void 0!==r){const n=r;r=void 0;try{URL.revokeObjectURL(n)}catch(i){e||(t=i),e=!0}}if(e)throw t}function y(t,i){if(l)return;l=!0;let s=arguments.length>1;null==e||e.removeEventListener("abort",p),null==o||o();try{g()}catch(r){s||(i=r),s=!0}s?a(i):n(t)}function v(t,e){if(!l){console.error("Error parsing Bilibili Danmu:",e);try{y(u(t))}catch(i){y(void 0,i)}}}(null==e?void 0:e.aborted)?p():(null==e||e.addEventListener("abort",p),o=null==i?void 0:i(p),l?null==o||o():function(){return c(this,null,function*(){const i=e?yield fetch(t,{signal:e}):yield fetch(t);if(l)return;const n=yield i.text();if(!l)try{const t=`\n          ${h.toString()}\n          ${u.toString()}\n          onmessage = ${m.toString()}\n        `;if(r=URL.createObjectURL(new Blob([t],{type:"application/javascript"})),l)return void g();if(s=new Worker(r),l)return void g();s.onmessage=t=>{var e;if(l||(null==(e=t.data)?void 0:e.id)!==d)return;const{danmus:i}=t.data;Array.isArray(i)?y(i):y(void 0,new Error("Invalid Bilibili Danmu worker response"))},s.onerror=t=>{var e;null==(e=t.preventDefault)||e.call(t),v(n,t.error||t)},s.onmessageerror=t=>v(n,t.error||t),s.postMessage({xml:n,id:d})}catch(a){v(n,a)}})}().catch(t=>y(void 0,t)))})}const y=new WeakMap,v=Symbol("cancelled danmuku input");function w(t){return y.has(t)||y.set(t,{closed:!1,tasks:new Set,emitting:[]}),y.get(t)}function k(t){const e=w(t),i=e.emitting[e.emitting.length-1];return!e.closed&&!t.art.isDestroy&&(!i||i.active())}function x(t){const e=w(t);e.closed=!0;for(const i of[...e.tasks])i.cancel()}function b(t,e,i){const n=t.states[e]||[];for(let a=0;a<n.length;a++)i(n[a]);return n}class ${constructor(t){this.owner=t,this.nodes=new Set}acquire(){const t=this.owner.$refs.pop()||document.createElement("div");return t.style.cssText=this.owner.constructor.cssText,t.dataset.mode="",t.dataset.id="",t.className="",this.nodes.add(t),t}get visibles(){const t=[],{clientWidth:e}=this.owner.$player,i=this.owner.getLeft(this.owner.$player);return this.owner.filter("emit",n=>{const a=n.$ref.offsetTop,s=this.owner.getLeft(n.$ref)-i,r=n.$ref.clientHeight,o=n.$ref.clientWidth,l=s+o,d=e-l,c=l/n.$restTime,p={};p.top=a,p.left=s,p.height=r,p.width=o,p.right=d,p.speed=c,p.distance=l,p.time=n.$restTime,p.mode=n.mode,t.push(p)}),t}left(t){const e=t.getBoundingClientRect();return this.owner.isRotate?e.top:e.left}makeWait(t){this.owner.setState(t,"wait"),t.$ref&&(t.$ref.style.cssText=this.owner.constructor.cssText,t.$ref.style.visibility="hidden",t.$ref.style.marginLeft="0px",t.$ref.style.transform="translateX(0px)",t.$ref.style.transition="transform 0s linear 0s",this.owner.$refs.push(t.$ref),t.$ref=null)}resize(){const{clientWidth:t}=this.owner.$player;this.owner.filter("stop",e=>{if(0===e.mode)e.$ref.style.left=`${t}px`}),this.owner.filter("emitLine truncated

packages/artplayer-plugin-danmuku/dist/artplayer-plugin-danmuku.mjs

@@ -680,6 +680,7 @@ class Scheduler {
       if (!this.active(operation) || danmu.$ref !== ref)
         return;
       if (top !== void 0) {
+        danmu.$lastStartTime = Date.now();
         owner.setState(danmu, "emit");
         owner.renderer.place(danmu, ref, top, distance, clientWidth);
         operation.ref = null;

packages/artplayer-plugin-danmuku/src/scheduler.ts

@@ -175,6 +175,8 @@ export default class Scheduler {
       if (!this.active(operation) || danmu.$ref !== ref)
         return
       if (top !== undefined) {
+        // The hidden Worker wait must not consume the CSS-visible lifetime.
+        danmu.$lastStartTime = Date.now()
         owner.setState(danmu, 'emit')
         owner.renderer.place(danmu, ref, top, distance, clientWidth)
         operation.ref = null

refactor/changes/2026-09-13-PKG-DANMUKU-11-visible-lifetime.md

@@ -0,0 +1,43 @@
+# PKG-DANMUKU-11 Worker 等待与可见寿命
+
+07稳定性审查发现独立计时问题，拆为本任务修复；07本身仍未完成。
+配置speed为1秒，Worker回复之前的隐藏等待如果超过1秒，弹幕刚触发visible就会
+在下一调度帧被回收。开始时间原先在postMessage前设置，而CSS显示在回复后才开始。
+
+## 兼容范围
+
+修复仅把成功放置的可见起点与实际放置时间对齐。保留原speed、Worker几何输入、
+同步/异步门面、事件参数/顺序、状态池、取消与错误行为；不改变公开类型或包入口。
+空轨道/取消不新增visible；暂停后的剩余寿命、播放速度与旧seek/reset行为仍回归。
+这是原来隐藏等待吞掉可见时长的缺陷修正，等待较长的弹幕会获得完整显示时间。
+历史readys的±0.1秒窗口和beforeVisible串行语义不在此任务改变。
+
+## 验证
+
+受控红测使用真实Worker算法：mode0/1/2、1秒寿命、等待3秒。三个开始时间断言
+均得到1000而非4000，明确复现本问题；修复后的绿测继续验证250ms剩余寿命和一次
+回收断言。原始日志保留在refactor/.cache/danmuku11-unit-red.log。
+
+原生测试使用实际视频与真实Worker几何，仅通过观察用Worker子类给请求传递加
+1500ms延迟，记录post/reply/visible/recycle时间。它验证人为注入延迟后的行为，
+不声称真实用户环境必然发生相同Worker延迟。
+
+完整源码253项通过，正式main/legacy各57项调度与Worker测试通过（包括共同的
+内部WorkerClient测试，不能都算独立产物案例）。构建、目标lint和分包严格TS通过。
+源码浏览器90项：原调度66项加寿命24项，覆盖两核心、新旧插件、mode0/1及三引擎；
+main/legacy各选12项候选寿命用例，总114项通过，无重试或跳过。以visible事件到
+节点回收测得生命周期，不把它称为逐帧视觉/自然Worker饥饿或长期吞吐验收。
+相同1秒配置下，旧版测得0–15ms，修复源码998–1044ms，main1004–1041ms、
+legacy1005–1027ms；原生逐帧调度有少量回收延后，受控用例精确验证时间扣减。
+具体环境、字节及时间见[机器证据](../baselines/danmuku-lifetime-validation.json)。
+
+首次浏览器运行也触发了旧版已登记的play/playing双循环，历史两次请求与单次计时
+夹具冲突。将插件安装放在原生playing之后并显式启动一次来隔离该已知缺陷，未改变
+被测时钟/队列或寿命阈值。隔离红测4个旧版缺陷观察通过、4个候选寿命断言失败，
+再修复生产。第一次失败也留档，没有把夹具故障当成本任务独立红测。
+独立只读复查确认取消/节点检查在时钟更新之前，几何与剩余寿命仍按准备时速度
+计算，setState→place→visible顺序不变；包ARCHITECTURE同步维护计时边界。
+无新依赖、公开类型、版本或分发入口变更；构建产物和docs复制保持相同字节。
+
+状态以tasks.json为准。回退本任务独立commit
+会恢复旧计时问题，不撤销06类型迁移或10热力图修复。未推送、未发布。

refactor/plan.md

@@ -2,9 +2,9 @@
 
 > 由 tasks.json 生成。请修改数据后运行 `node refactor/scripts/plan.mjs --write`，不要手改本表。
 
-基线：`40fcda6a37d0049d42e49c1e64e70d4fd9ba5f7f`。总任务 229 项，范围 22 个包及工作区/示例。
+基线：`40fcda6a37d0049d42e49c1e64e70d4fd9ba5f7f`。总任务 230 项，范围 22 个包及工作区/示例。
 
-状态：todo 68 / doing 15 / blocked 0 / done 146 / deferred 0。风险 L/M/H 表示兼容风险，不表示工期。
+状态：todo 68 / doing 15 / blocked 0 / done 147 / deferred 0。风险 L/M/H 表示兼容风险，不表示工期。
 
 前置依赖是启动条件；验收是完成条件。任务可以继续拆分，但不能复用或悄悄删除旧 ID。
 
@@ -22,7 +22,7 @@
 | artplayer-plugin-auto-thumbnail | 1.1.0 | PKG-AUTO-THUMB-01, PKG-AUTO-THUMB-02, PKG-AUTO-THUMB-03, PKG-AUTO-THUMB-04, PKG-AUTO-THUMB-05, PKG-AUTO-THUMB-06 |
 | artplayer-plugin-chapter | 1.1.0 | PILOT-01, PKG-CHAPTER-01, PKG-CHAPTER-02, PKG-CHAPTER-03, PKG-CHAPTER-04, PKG-CHAPTER-05, PKG-CHAPTER-06 |
 | artplayer-plugin-chromecast | 1.1.0 | PKG-CAST-01, PKG-CAST-02, PKG-CAST-03, PKG-CAST-04, PKG-CAST-05, PKG-CAST-06 |
-| artplayer-plugin-danmuku | 5.3.0 | PKG-DANMUKU-01, PKG-DANMUKU-02, PKG-DANMUKU-03, PKG-DANMUKU-04, PKG-DANMUKU-05, PKG-DANMUKU-06, PKG-DANMUKU-07, PKG-DANMUKU-08, PKG-DANMUKU-09, PKG-DANMUKU-10 |
+| artplayer-plugin-danmuku | 5.3.0 | PKG-DANMUKU-01, PKG-DANMUKU-02, PKG-DANMUKU-03, PKG-DANMUKU-04, PKG-DANMUKU-05, PKG-DANMUKU-06, PKG-DANMUKU-07, PKG-DANMUKU-08, PKG-DANMUKU-09, PKG-DANMUKU-10, PKG-DANMUKU-11 |
 | artplayer-plugin-danmuku-mask | 1.1.0 | PKG-MASK-01, PKG-MASK-02, PKG-MASK-03, PKG-MASK-04, PKG-MASK-05, PKG-MASK-06 |
 | artplayer-plugin-dash-control | 1.1.0 | PKG-DASH-01, PKG-DASH-02, PKG-DASH-03, PKG-DASH-04, PKG-DASH-05, PKG-DASH-06 |
 | artplayer-plugin-document-pip | 1.1.0 | PKG-DPIP-01, PKG-DPIP-02, PKG-DPIP-03, PKG-DPIP-04, PKG-DPIP-05, PKG-DPIP-06 |
@@ -315,10 +315,11 @@
 | PKG-DANMUKU-04 | artplayer-plugin-danmuku<br>整理时钟、队列与轨道调度 | PKG-DANMUKU-03, CORE-10 | danmuku 调度器和确定性时钟测试 | seek/暂停/倍率/长时间运行无顺序和碰撞回归 | H | done |
 | PKG-DANMUKU-05 | artplayer-plugin-danmuku<br>整理 DOM 渲染、设置、热力图与 worker | PKG-DANMUKU-04, CORE-14, CORE-18 | renderer/setting/heatmap/worker 职责及资源归属 | mount/icons/设置和 worker 协议保持，销毁无后台工作 | H | done |
 | PKG-DANMUKU-06 | artplayer-plugin-danmuku<br>迁移 TS 与公开声明 | PKG-DANMUKU-05, ENG-04, ENG-06 | 自有模块、worker 消息、option/item/result 类型 | 旧参数、扩展字段和事件消费通过，vendored 边界清楚 | H | done |
-| PKG-DANMUKU-07 | artplayer-plugin-danmuku<br>弹幕能力稳定性验收 | PKG-DANMUKU-06, PKG-DANMUKU-10 | 负载/渲染/资源对比及 mask 可依赖的稳定边界 | 在试点核心中旧插件 API 与关键帧路径通过 | H | doing |
+| PKG-DANMUKU-07 | artplayer-plugin-danmuku<br>弹幕能力稳定性验收 | PKG-DANMUKU-06, PKG-DANMUKU-10, PKG-DANMUKU-11 | 负载/渲染/资源对比及 mask 可依赖的稳定边界 | 在试点核心中旧插件 API 与关键帧路径通过 | H | doing |
 | PKG-DANMUKU-08 | artplayer-plugin-danmuku<br>完成新旧核心与组合验收 | PKG-DANMUKU-07, CORE-22 | 最终核心/旧核心、mask/fullscreen/PiP 组合报告 | 性能无未解释退化，反复装卸无累计资源 | H | todo |
 | PKG-DANMUKU-09 | artplayer-plugin-danmuku<br>完成分发、示例与文档 | PKG-DANMUKU-08, ENG-07 | danmuku.js、README、声明、worker 与产物 | tarball 和静态 icons 等旧调用通过，有独立回退版本 | H | todo |
 | PKG-DANMUKU-10 | artplayer-plugin-danmuku<br>修复 issue958 密集热力图过高与曲线裁平 | PKG-DANMUKU-05 | 自动密度缩放与曲线边界、历史自定义坐标兼容及真实浏览器红绿证据 | 16000条三种分布在两核心三引擎和source/main/legacy不遮挡；显式轴和自定义points保持旧解释，有单独commit | M | done |
+| PKG-DANMUKU-11 | artplayer-plugin-danmuku<br>修复 Worker 隐藏等待吞掉可见寿命 | PKG-DANMUKU-06 | 成功放置时的可见计时与延迟回复回归 | 真实 Worker 延迟下完整显示寿命；保留暂停/回收/取消和公开契约 | M | done |
 
 ## 5 包迁移：artplayer-proxy-canvas
 
@@ -589,3 +590,4 @@
 - PKG-ASR-08: [记录](changes/2026-09-13-PKG-ASR-08-capture-output.md) [记录](baselines/asr-fallback-validation.json)
 - PKG-ASR-09: [记录](changes/2026-09-13-PKG-ASR-09-explicit-capture.md) [记录](baselines/asr-explicit-capture-validation.json)
 - PKG-DANMUKU-10: [记录](changes/2026-09-13-PKG-DANMUKU-10-heatmap-density.md) [记录](baselines/danmuku-heatmap-density-validation.json)
+- PKG-DANMUKU-11: [记录](changes/2026-09-13-PKG-DANMUKU-11-visible-lifetime.md) [记录](baselines/danmuku-lifetime-validation.json)

refactor/progress.md

@@ -1,5 +1,17 @@
 # 进度与证据
 
+## PKG-DANMUKU-11 Worker 等待寿命修复
+
+07负载审查独立发现并复现：隐藏Worker等待超过speed时，刚显示的弹幕下一帧就被
+回收。成功放置时重置可见起点，保留准备时速度、几何、取消检查与事件顺序。
+三模式受控红/绿、两核心与三引擎真实延迟Worker验证通过；完整源码253项、
+main/legacy各57项单测，源码90及两个产物各12共114项浏览器通过。构建/lint/严格
+分包TS通过，见[变更](changes/2026-09-13-PKG-DANMUKU-11-visible-lifetime.md)和
+[机器证据](baselines/danmuku-lifetime-validation.json)。
+这是实际视频/Worker加受控请求延迟，不声称自然饥饿或持续高负载通过。
+230项：147 done、15 doing、68 todo；07继续，DANMUKU-LOAD-01仍开放。
+新增11是独立缺陷任务和本地commit；不推送或发布。
+
 ## PKG-DANMUKU-06 自有 TS 与公开声明完成
 
 20个自有运行模块完成严格TS，新增内部状态/Worker/parser/UI类型边界；公开运行

refactor/risk-table.md

@@ -239,3 +239,4 @@
 | DANMUKU-INPUT-02 | resolved / 已复现 | Intermediate explicit-zero correction regressed accepted NaN timestamp fallback | PKG-DANMUKU-04 |
 | DANMUKU-LOAD-01 | open / 待取证 | Native lifecycle fixtures sometimes miss timestamp eligibility during concurrent workload; real frame/window behavior needs load evidence | PKG-DANMUKU-07 |
 | DANMUKU-HEATMAP-02 | resolved / 已复现 | Issue958 dense automatic heatmaps exceed the fixed Y domain and flatten across video | PKG-DANMUKU-10 |
+| DANMUKU-TIMING-01 | resolved / 已复现 | Hidden Worker wait is deducted from visible lifetime and can recycle a comment immediately after visible | PKG-DANMUKU-11 |

refactor/risks.json

@@ -5324,6 +5324,28 @@
         "refactor/baselines/danmuku-heatmap-density-validation.json"
       ],
       "resolutionRationale": "250 unit tests and 102 native browser cases passed, including source/main/legacy density matrices and main resource regression. No claim of full load or macOS device acceptance."
+    },
+    {
+      "id": "DANMUKU-TIMING-01",
+      "title": "Hidden Worker wait is deducted from visible lifetime and can recycle a comment immediately after visible",
+      "confirmation": "reproduced",
+      "status": "resolved",
+      "owners": [
+        "PKG-DANMUKU-11"
+      ],
+      "evidence": [
+        "refactor/changes/2026-09-13-PKG-DANMUKU-11-visible-lifetime.md",
+        "test/danmuku-scheduler.test.js",
+        "test/browser/danmuku-lifetime.spec.js",
+        "refactor/baselines/danmuku-lifetime-validation.json"
+      ],
+      "compatibleResolution": "Anchor the lifetime clock to successful placement while preserving speed, Worker geometry, queue ordering and lifecycle cancellation.",
+      "closureCriteria": "Controlled three-mode regression and native delayed Worker runs distinguish historical immediate recycling from full candidate visible lifetime; ordinary scheduling regressions remain green.",
+      "resolutionEvidence": [
+        "refactor/baselines/danmuku-lifetime-validation.json",
+        "refactor/changes/2026-09-13-PKG-DANMUKU-11-visible-lifetime.md"
+      ],
+      "resolutionRationale": "Three exact controlled modes and real delayed Worker/native video regression establish full visible lifetime, with the unchanged published defect retained and existing scheduling/pause/cancellation checks green."
     }
   ]
 }

refactor/tasks.json

@@ -3380,7 +3380,8 @@
       ],
       "dependsOn": [
         "PKG-DANMUKU-06",
-        "PKG-DANMUKU-10"
+        "PKG-DANMUKU-10",
+        "PKG-DANMUKU-11"
       ],
       "status": "doing",
       "risk": "H",
@@ -4681,6 +4682,25 @@
         "changes/2026-09-13-PKG-DANMUKU-10-heatmap-density.md",
         "baselines/danmuku-heatmap-density-validation.json"
       ]
+    },
+    {
+      "id": "PKG-DANMUKU-11",
+      "phase": "5 包迁移：artplayer-plugin-danmuku",
+      "title": "修复 Worker 隐藏等待吞掉可见寿命",
+      "scope": [
+        "artplayer-plugin-danmuku"
+      ],
+      "dependsOn": [
+        "PKG-DANMUKU-06"
+      ],
+      "status": "done",
+      "risk": "M",
+      "deliverable": "成功放置时的可见计时与延迟回复回归",
+      "acceptance": "真实 Worker 延迟下完整显示寿命；保留暂停/回收/取消和公开契约",
+      "evidence": [
+        "changes/2026-09-13-PKG-DANMUKU-11-visible-lifetime.md",
+        "baselines/danmuku-lifetime-validation.json"
+      ]
     }
   ]
 }

test/browser/danmuku-lifetime.spec.js

@@ -0,0 +1,92 @@
+import assert from 'node:assert/strict'
+import fs from 'node:fs'
+import process from 'node:process'
+import { ensureArchive, hash, readMember } from '../../refactor/scripts/releases.mjs'
+import { compilePackage } from '../helpers/load.js'
+import { expect, test } from './fixtures.js'
+
+const implementations = new Map()
+test.beforeAll(async () => {
+  const release = JSON.parse(fs.readFileSync(new URL('../../refactor/baselines/danmuku-release.json', import.meta.url), 'utf8')).release
+  const member = `package/${release.manifest.main.replace(/^\.\//u, '')}`
+  const bytes = readMember(await ensureArchive(release), member)
+  assert.equal(hash(bytes), release.files[member])
+  implementations.set('published', bytes.toString())
+  implementations.set('candidate', process.env.ARTPLAYER_DANMUKU_ARTIFACT
+    ? fs.readFileSync(process.env.ARTPLAYER_DANMUKU_ARTIFACT, 'utf8')
+    : await compilePackage('artplayer-plugin-danmuku', 'umd'))
+})
+
+for (const core of ['published', 'candidate']) {
+  for (const implementation of ['published', 'candidate']) {
+    for (const mode of [0, 1]) {
+      test(`${core} core / ${implementation} plugin / mode ${mode}: Worker waiting does not consume visible lifetime`, async ({ page }, testInfo) => {
+        await page.goto(`/test/player.html?core=${core}`)
+        await page.evaluate(() => {
+          const evidence = window.lifetimeEvidence = { posts: [], replies: [], visible: [], recycled: [] }
+          const NativeWorker = window.Worker
+          window.Worker = class DelayedNativeWorker extends NativeWorker {
+            constructor(...args) {
+              super(...args)
+              this.addEventListener('message', event => evidence.replies.push({ id: event.data.id, wall: performance.now() }))
+            }
+
+            postMessage(message, ...args) {
+              evidence.posts.push({ id: message.id, wall: performance.now() })
+              // Delay delivery, then execute the actual native Worker and its real geometry.
+              this.delay = setTimeout(() => super.postMessage(message, ...args), 1500)
+            }
+
+            terminate() {
+              clearTimeout(this.delay)
+              return super.terminate()
+            }
+          }
+        })
+        const code = implementations.get(implementation)
+        await page.addScriptTag({ content: code })
+        await page.evaluate(() => window.createPlayer('/assets/sample/video.mp4'))
+        await page.click('#play')
+        await expect.poll(() => page.evaluate(() => window.art.currentTime)).toBeGreaterThan(0.1)
+        // Install after native playing, then start once. The published duplicate
+        // play/playing loop defect is covered elsewhere and is not this timing case.
+        await page.evaluate(async (mode) => {
+          const art = window.art
+          const evidence = window.lifetimeEvidence
+          art.on('artplayerPluginDanmuku:visible', row => evidence.visible.push({ wall: performance.now(), clock: Date.now(), startedAt: row.$lastStartTime, rest: row.$restTime, mode: row.mode, time: art.currentTime, transition: row.$ref.style.transition }))
+          art.plugins.add(window.artplayerPluginDanmuku({ danmuku: [], speed: 1, antiOverlap: false, heatmap: false, emitter: false }))
+          const plugin = art.plugins.artplayerPluginDanmuku
+          const owner = plugin.config({})
+          const makeWait = owner.makeWait
+          owner.makeWait = (row) => {
+            if (row.$state === 'emit')
+              evidence.recycled.push({ wall: performance.now(), rest: row.$restTime, time: art.currentTime })
+            return makeWait.call(owner, row)
+          }
+          await plugin.load([{ id: 'delayed', text: 'Full visible lifetime', time: art.currentTime + 0.4, mode }])
+          owner.start()
+        }, mode)
+        await expect.poll(() => page.evaluate(() => window.lifetimeEvidence.recycled.length)).toBe(1)
+        await page.click('#pause')
+        const evidence = await page.evaluate(() => ({ ...window.lifetimeEvidence, video: { width: window.art.video.videoWidth, time: window.art.currentTime } }))
+        await testInfo.attach('danmuku-lifetime', { contentType: 'application/json', body: JSON.stringify({ core, implementation, mode, sha256: hash(code), evidence, scope: 'Native video and real Worker geometry with controlled 1500ms request delay; does not assert naturally occurring Worker starvation.' }) })
+        expect(evidence.posts).toHaveLength(1)
+        expect(evidence.replies).toHaveLength(1)
+        expect(evidence.visible).toHaveLength(1)
+        expect(evidence.video.width).toBeGreaterThan(0)
+        expect(evidence.replies[0].wall - evidence.posts[0].wall).toBeGreaterThanOrEqual(1400)
+        const lifetime = evidence.recycled[0].wall - evidence.visible[0].wall
+        if (implementation === 'published') {
+          // Preserve the historical defect as explicit evidence, not the candidate contract.
+          expect(lifetime).toBeLessThan(400)
+          expect(evidence.visible[0].clock - evidence.visible[0].startedAt).toBeGreaterThanOrEqual(1400)
+        }
+        else {
+          expect(lifetime).toBeGreaterThanOrEqual(900)
+          expect(evidence.visible[0].rest).toBe(1)
+        }
+        await page.evaluate(() => window.art.destroy())
+      })
+    }
+  }
+}

test/danmuku-scheduler.test.js

@@ -491,6 +491,61 @@ test(`${prefix}: the actual algorithm places three same-time fixed rows on disti
   env.destroy()
 })
 
+for (const mode of [0, 1, 2]) {
+  test(`${prefix}: delayed Worker reply starts visible lifetime at placement for mode ${mode}`, async (t) => {
+    const { env, plugin, owner, worker, layer, reply } = await fixture({ speed: 1 })
+    t.after(() => env.destroy())
+    await plugin.emit({ text: `delayed-${mode}`, time: 10, mode })
+    const row = owner.queue[0]
+    env.art.playing = true
+    owner.start()
+    const pendingFrame = env.frame()
+    await env.flush()
+    assert.equal(worker.messages.length, 1)
+    const ref = row.$ref
+    assert.equal(layer.children.length, 1)
+    assert.equal(output(env, 'visible').length, 0, 'Measurement before the Worker reply is not visible lifetime')
+    assert.notEqual(ref.style.visibility, 'visible')
+
+    // The reply uses the real positioning algorithm; only its delivery and the
+    // wall/media clocks are controlled. No browser animation timing is claimed.
+    env.tick(3000)
+    env.art.currentTime += 3
+    const placedAt = env.context.Date.now()
+    reply(0)
+    await pendingFrame
+    assert.equal(row.$state, 'emit')
+    assert.equal(row.$ref, ref)
+    assert.equal(ref.style.visibility, 'visible')
+    assert.deepEqual(output(env, 'visible').map(event => event.args[0]), [row])
+    assert.equal(row.$restTime, 1)
+    assert.equal(row.$lastStartTime, placedAt, 'Hidden Worker waiting must not shorten the visible duration')
+    if (mode === 0)
+      assert.equal(ref.style.transition, 'transform 1s linear 0s')
+
+    env.tick(250)
+    env.art.currentTime += 0.25
+    await env.frame()
+    assert.equal(row.$state, 'emit')
+    assert.equal(row.$ref, ref)
+    assert.equal(row.$restTime, 0.75, 'Only elapsed time since visible placement consumes lifetime')
+    assert.equal(owner.$refs.length, 0)
+
+    env.tick(750)
+    env.art.currentTime += 0.75
+    await env.frame()
+    assert.equal(row.$state, 'wait')
+    assert.equal(row.$ref, null)
+    assert.equal(ref.style.visibility, 'hidden')
+    assert.deepEqual(Array.from(owner.$refs), [ref], 'The expired node returns to its pool exactly once')
+    await env.frame()
+    assert.deepEqual(Array.from(owner.$refs), [ref])
+    assert.equal(worker.messages.length, 1)
+    assert.equal(output(env, 'visible').length, 1)
+    assert.equal(output(env, 'error').length, 0)
+  })
+}
+
 test(`${prefix}: a sampled three-hour simulated clock preserves batch order, pooled nodes, pause and seek state`, async (t) => {
   // Advance a controlled clock at lifecycle boundaries; this is not a real-time
   // endurance, frame-rate, CSS animation or browser memory measurement.