用于审查或改进前端无障碍、语义结构、键盘支持、焦点管理、ARIA 标签、屏幕阅读器行为、WCAG 2.2 问题、触控无障碍或辅助技术回归；中文触发词包括 无障碍、accessibility、a11y、WCAG、屏幕阅读器。
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bovinphang/frontend-craft22Updated Sep 26, 2026
FreePublished on GitHub
fec-web-workers
用于将昂贵的浏览器工作移出主线程，涉及 Web Workers、SharedWorker、worker 池、Comlink、transferable objects、Vite/Webpack worker 集成或 UI 响应性修复。不要用于轻量同步工作或 DOM 操作；中文触发词包括 Web Worker、后台线程、主线程阻塞。
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Run score Not tested
See how to installFiles included (3)
- SKILL.md2.0 KB
- references/advanced-workers.md1.3 KB
- references/basic-worker.md1.6 KB
SKILL.md (original)
Review the instructions the agent will receive before you install.
Web Workers
用途
把昂贵计算移出主线程，保持输入、滚动和动画响应。
流程
- 先确认瓶颈：任务超过约 10ms、用户输入延迟明显、FPS 下滑或大文件解析/图像处理/加密计算才考虑 Worker。
- 选择通信模型：简单任务用
postMessage，函数式 RPC 用 Comlink，大量并行小任务用 Worker pool，跨 Tab 同步用 SharedWorker。 - 设计消息协议：请求/响应类型、错误类型、取消或超时策略都要明确。
- 传大对象时优先 Transferable Objects；不要让结构化克隆吞掉 Worker 带来的收益。
- 在组件或页面卸载时
terminate()，并通过 Profiler、Performance 面板或 FPS 指标验证主线程改善。
详细参考
- 需要原生 Worker 文件、构建工具导入、React 生命周期封装和清理示例时，加载 references/basic-worker.md。
- 需要 Transferable Objects、Comlink、Worker pool、SharedWorker、CSP 和 SharedArrayBuffer 注意事项时，加载 references/advanced-workers.md。
约束
- Worker 内不能访问 DOM、
window、document、alert()或同步localStorage。 - 高频通信可能比主线程计算更慢；先测量再拆分。
- Worker 文件必须同源加载，并受
worker-srcCSP 限制。 - 大型二进制数据优先 transfer，transfer 后原引用会失效。
- 每个 Worker 有独立 JS 堆，必须主动管理生命周期和内存。
预期输出
计算密集型操作在后台线程执行，主线程输入和滚动恢复流畅，错误与取消路径明确，Worker 在卸载时被终止且无内存泄漏。
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bovinphang/frontend-craft22Updated Sep 26, 2026
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The English summary is being prepared. Showing the original description.
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