# Client 模块 [English](client-modules.md) | 中文 Web 插件表:[dsh-client-modules](../../packages/client/modules) 中 client 模块系统的 Node 半,以 `ctx.clientModules`(`ClientModuleRegistry`)形式提供。它扫描宿主 Loader 的 entry,找出声明了 `dsh.client` 的包,组合出 `window.__DSH_BOOT__` entry 图,在 `/plugins` 下提供带版本的单资源或多资源 combo 脚本,并以启动协议行回应每次 index 注入收集——这是同一个服务的四个面。它是 Web GUI 栈的一项可选能力,不属于 agent loop(智能体循环)主干,并且是 [dsh-host-webserver](../../packages/host/webserver) 的消费方:[web-server.md](web-server.zh.md) 所述的载体提供本服务注册的前缀路由与其回应的 `webserver/index-inject` 事件。同一个包的浏览器半(`ctx.modules`,即拉取并物化这些 bundle 的 lazy CJS 模块表)属于内核机件,记录在[包 README](../../packages/client/modules/README.zh.md)中,不在本页。 源码:[`packages/client/modules/src/client/manifest.ts`](../../packages/client/modules/src/client/manifest.ts) ## wire 图是 Node 半与浏览器半之间协议层的唯一真源。宿主从扫描到的包组合出 `WebBootEntry` 行与 `WebBootBatch` 描述,随后在 Vite entry 之前向结构化 index 注入表贡献 registration facade、application preload、bootstrap 脚本与图全局量。`global` 行渲染为 `globalThis["__DSH_BOOT__"]`,其中 `<` 已转义,插件可控的字符串因此无法逃出 script 元素。没有有效 manifest 的页面无法启动:浏览器解析器会拒绝畸形 row 或批次、未知成员,以及未恰好归属一个初始 combo 描述的 entry。 ```ts type-equiv /** * One composed client entry pushed by the host (a graph row). Wire * single source: the host node half (package root) produces this same shape. * `immediately` marks stage-one prefetch. `inject` names package rows whose * factories must arrive before this row materializes, while Cordis separately * uses the same package edges to compose entries. `external` carries exact * non-inject module requests (see {@link WebBootGraph.entries}). */ interface WebBootEntry { /** Entry name == package name. */ id: string /** Revisioned single-resource combo endpoint used by HMR. */ url: string /** Opaque plugin-artifact revision used for HMR cache busting. */ rev: string /** Package-name dependency edges used for factory arrival and plugin composition. */ inject?: string[] /** Stage-one prefetch mark: load the script for factory registration during module-face boot. */ immediately?: boolean /** Non-baseline module specifiers this row requests; omitted when it requests none. */ external?: string[] } ``` ```ts type-equiv /** Initial scheduling phase for one revisioned combo script. */ type WebBootBatchPhase = 'bootstrap' | 'application' ``` ```ts type-equiv /** One initial combo script; a scheduling phase may span several descriptors. */ interface WebBootBatch { /** Parser-blocking bootstrap or preloaded application scheduling. */ phase: WebBootBatchPhase /** Revisioned combo script endpoint. */ url: string /** Revision derived from the ordered entry revisions. */ rev: string /** Graph entry ids whose factories the script registers, in execution order. */ entries: string[] } ``` ```ts type-equiv /** The composed client entry graph the host injects as `window.__DSH_BOOT__`. */ interface WebBootGraph { /** Consistency anchor over the current entry and batch descriptors. */ rev: string /** * Composed entries in module-graph order — a dynamic package row precedes * rows whose `external` requests that package. Cordis activation order is * unrelated and remains owned by fiber service waiting. */ entries: WebBootEntry[] /** Initial combo descriptors; every entry belongs to exactly one descriptor. */ batches: WebBootBatch[] } ``` 每个初始 row 的 `rev` 都是不透明的进程 nonce 加序号,因此组合图时不会哈希每个插件产物。HMR 观察到 bundle 变化后,该 row 的 revision 才改为新可执行字节的哈希。初始 descriptor 把 row 划入 bootstrap 与 application 两个调度阶段,每个阶段都可以包含多条 descriptor。URL 只含有序 package 资源列表和从这些 row revision 派生的 revision,阶段名不会进入路由。图组合保持 row 顺序,并在 map 形式 URL 超过 3 KiB 前贪心切分,不拼接脚本,也不读取 map。图 revision 对 entry 与 batch descriptor 求哈希。`immediately` 标记第一阶段的 registration barrier;同一 combo 中的 row 共享脚本传输,不同 combo 则独立加载。 ## 扫描 包加入这张表的方式,是在自己的 package.json 中声明 `dsh.client`(`platform: 'web'`、可选的 `inject` 边、可选的 `immediately`),并在 `exports["./client"]` 导出构建好的 bundle。每个 live row 都从自己的 Loader specifier 与所属 tree `baseUrl` 解析;若 `loader.internal.resolveSync` 可用,则使用 Host face import 所用的同一个实现。最近归属的 package manifest 提供浏览器模块 id,因此相对 source 与 built overlay 仍保留包身份。若不同的 active Loader source 解析到同一包名,组合会失败;一个来源卸载后,仍存活的来源无需重启 fiber 即可提供该 row。 扫描是单包增量的;不存在全量重扫代码路径。fiber 构造或 dispose(资源释放)时的每次 cordis `internal/plugin` 发射都把该 fiber 的 entry 名标脏,一次微任务 flush 把每个脏名与实时 loader entry 对账。激活趟以全部当前 entry 灌入同一个脏集合并同步 flush,因此初扫与稳态共享一条实现——但失败姿态相反。激活时,已加载 entry 中的畸形声明或缺失 bundle 会聚合为一个大声的 `AggregateError`,列出每个损坏的包:该 fiber 进入 FAILED,由启动的大声失败 sweep 上报。稳态下,损坏的包只记录一条警告,且不得殃及其他包。 包元数据——包括「非 client 包」这一否定结论——按 Loader specifier 与所属 tree base URL 缓存至重启。同一来源的 fiber 重启会原样复用其 row 与 rev;bundle 内容变更只经 `rebuilt()` 到达图。 ## bundle 路由与 index 注入 `GET`/`HEAD /plugins/??/client.js,/client.js&rev=` 寻址一份生成的 combo 脚本;单资源请求采用同一形式,也是 HMR 路径。脚本在首次 `GET` 时只拼接一次,并以绝对 `sourceMappingURL` 结尾,其中每个资源后缀改为 `.js.map`。启动、index 渲染、脚本 `GET` 和 `HEAD` 都不会读取 map 文件;首次 map `GET` 才会读取并校验这些文件、组合一份 Indexed Source Map v3,并缓存该 body。组件有自带 map 时直接用于对应 section;没有时则获得 identity section,其 `sourcesContent` 是捕获的 bundle,source 名取打包后的 `sourceURL` 或插件路由。每条启动请求 URL 按 UTF-8 字节计算都不超过 3 KiB;切分按更长的 map 形式计算。所有 application URL 都会预加载,所有 bootstrap URL 都会在图全局量与 Vite entry 之前执行。已物化响应使用长期 immutable 缓存。未知或被修改的资源列表、缺少 revision 及陈旧 revision 都返回 404,绝不提供其他字节,也不会让 SPA fallback 把 HTML 当作 JavaScript 返回;其他方法返回 405。注入行在每次 index 渲染时携带当前图,因此重新加载总是基于实时组合启动。 ## 服务 ```ts type-equiv /** Filesystem baseline captured before a client artifact snapshot is read. */ interface ClientArtifactBaseline { /** Absolute path of the client bundle. */ readonly path: string /** Bundle modification time in milliseconds. */ readonly mtimeMs: number /** Bundle size in bytes. */ readonly size: number } ``` `ClientModuleRegistry`(`ctx.clientModules`,定义于 [`packages/client/modules/src/index.ts`](../../packages/client/modules/src/index.ts))暴露读取面与重建面;签名见生成的[服务目录](#ctxclientmodules--clientmoduleregistry)。`graph()` 返回当前组合出的图(两次变更之间是同一个稳定对象),`clientPath(id)` 返回 bundle 的绝对路径,`artifactBaseline(id)` 返回读取当前快照前捕获的 bundle stat 值。`fetchBundle()` 解析 HTTP 路由所使用的同一份惰性响应。`rebuilt(id)` 是变化后的 bundle 内容到达图的唯一入口:它重新哈希 bundle 字节,只有 revision 真正变化才会重新组合图并发出通知。`onRebuilt` 按发生变化的 bundle 逐个触发并携带新 revision;`onGraphChanged` 在任何一次重新组合了图的 flush 之后触发(行的增删,或 rebuilt 带来的 revision 变化),并采用拉取模型——监听器自行重读 `graph()`。两条通知路径都会兜住监听器异常,因此一个抛错的订阅者既不能让后续订阅者被跳过,也不能杀死触发这次 flush 的一方。 随包提供的 Web 组合通过 [`dsh-client-hmr`](../../packages/client/hmr/README.zh.md) 交付动态图快照。Host 立即转发现有图变化通知,重连会发送当前完整图。图描述浏览器的目标条目,不声明 Host 清理已经完成。产物轮询另外报告重建 revision。仅 source map 变化不会触发重载;新 combo-map URL 只会在 bundle revision 变化后出现,每份 map body 由其首次 `GET` 固定。Client Modules 校验快照,并将对账与重建串行协调;它持有启动创建的条目映射,负责单资源到达、异步移除、未使用模块与样式清理,以及页面本地重试状态。静态平台模块与 bootstrap 保持页面生命周期;Electron 安装属于独立流程。 ## Cordis API Generated from source by `scripts/gen-cordis-catalog.ts` (verified fresh by `pnpm run verify-cordis-catalog` in doc-sync; regenerate with `pnpm run gen-cordis-catalog`) — the language sides differ only in locale-specific paired document paths. Signature blocks use a `ts cordis-catalog` fence and keep the original source JSDoc; dispatch modes are defined in the [primer](../cordis-primer.zh.md#dispatch-modes), and the framework-inherited `ctx` API lives in [cordis-api/inherited.md](../cordis-api/inherited.md). ### `ctx.clientModules` — `ClientModuleRegistry` The web plugin table service: incremental `dsh.client` scan + wire composition + bundle route + index injection rows. Construction runs the activation scan synchronously — a malformed declaration or missing bundle among the already-loaded entries aggregates into one loud throw (FAILED fiber; the boot activation audit reports it). ```ts cordis-catalog /** * Current composed entry graph (stable object between changes). * @returns the graph served as `window.__DSH_BOOT__`. */ graph(): WebBootGraph /** * Absolute path of an entry's client bundle. * @param id - entry id (package name). * @returns the path, or undefined for an unknown id. */ clientPath(id: string): string | undefined /** * Serve an advertised revisioned bundle or source map without a Web server. * Unknown URLs return 404, unsupported methods return 405, and `HEAD` * returns the same immutable headers without materializing a body. Each body * is built once on its first `GET`; script construction never reads maps. * @param request - shell-carrier request for a `/plugins` resource. * @returns the exact response also exposed by the optional Web route. */ async fetchBundle(request: Request): Promise /** * Filesystem baseline captured before an entry's current bytes were read. * HMR compares it with the live files when installing a watch, so a write * between startup composition and watch installation cannot disappear into * the watcher's initial state. * @param id - entry id (package name). * @returns the path and baseline, or undefined for an unknown id. */ artifactBaseline(id: string): ClientArtifactBaseline | undefined /** * Publish one completed bundle generation (the HMR watch's registration * hook — the only entry point through which build changes reach the graph). * @param id - entry id (package name). * @returns the new rev, or undefined for an unknown id. */ rebuilt(id: string): string | undefined /** * Subscribe to bundle rebuilds; fires only when the re-hash changed the rev. * @param listener - receives the entry id and its new bundle rev. * @returns the unsubscriber. */ onRebuilt(listener: (id: string, rev: string) => void): () => void /** * Fires after any flush that recomposed the graph (row added/removed, or a * rebuilt rev change). Pull model: listeners re-read {@link graph}. * @param listener - notified with no payload. * @returns the unsubscriber. */ onGraphChanged(listener: () => void): () => void ``` Source: [`packages/client/modules/src/index.ts`](../../packages/client/modules/src/index.ts)