# Fiber [English](fiber.md) | 中文 fiber 是一个已加载的插件实例,包含其生命周期状态、经过校验的配置以及已注册的作用。`ctx.fiber` 是当前 fiber,`ctx.effect()` 会将调用委托给它。 ### ctx.effect(execute, label?) ```ts cordis-catalog /** * Register a cleanup-aware effect on this fiber. * * `execute` runs immediately; the disposers it produces are collected and * run (in reverse order) either when the returned disposer is called or * when the fiber unloads, whichever comes first. Calling the disposer twice * is a no-op. Throws `CordisError('INACTIVE_EFFECT')` if the fiber is * already disposed, and `TypeError` if `execute` returns an invalid shape. * * @param execute — the effect body; see {@link Effect} for accepted shapes. * @param label — effect label shown in `getEffects()` diagnostics. * @returns a disposer that tears the effect down and settles once done. */ effect(execute: () => SyncEffect, label?: string): Disposable> effect(execute: () => Effect, label?: string): AsyncDisposable> ``` 在此 fiber 上注册一个支持清理的作用。 `execute` 会立即运行;它产生的清理函数将被收集,并在调用返回的清理函数或卸载 fiber 时按相反顺序运行,以先发生者为准。重复调用清理函数不会产生任何效果。如果 fiber 已经 dispose(资源释放),则抛出 `CordisError('INACTIVE_EFFECT')`;如果结构无效,则抛出 `TypeError`,表示 `execute` 返回了不受支持的结果。 - `execute`:作用主体;可接受的结构见 `Effect`。 - `label`:在 `getEffects()` 诊断信息中显示的作用标签。 **返回**一个用于撤销该作用的清理函数,并在清理完成后结算。 [源码](../../vendor/cordis/src/fiber.ts#L415) ### ctx.fiber ```ts cordis-catalog /** The fiber (plugin runtime instance) that owns this context. */ fiber: Fiber ``` 拥有此上下文的 fiber(插件运行时实例)。 [源码](../../vendor/cordis/src/fiber.ts#L12) ## Fiber 类 单次插件应用的运行时实例。 fiber 会跟踪 `ctx.plugin()` 返回的插件上下文所对应的依赖状态、经过校验的配置、生命周期作用和清理操作。 [源码](../../vendor/cordis/src/fiber.ts#L184) ### fiber.uid ```ts cordis-catalog /** Unique id within the registry; 0 for the root fiber, `null` once disposed. */ public uid: number | null ``` 在注册表中的唯一 id;根 fiber 的 id 为 0,dispose 后为 `null`。 [源码](../../vendor/cordis/src/fiber.ts#L186) ### fiber.ctx ```ts cordis-catalog /** The context this fiber's plugin runs in (extends the parent context). */ public readonly ctx: Context ``` 此 fiber 的插件运行所在的上下文(扩展自父上下文)。 [源码](../../vendor/cordis/src/fiber.ts#L188) ### fiber.config ```ts cordis-catalog /** The validated plugin config (updated by `update()`). */ public config: any ``` 经过校验的插件配置(由 `update()` 更新)。 [源码](../../vendor/cordis/src/fiber.ts#L190) ### fiber.state ```ts cordis-catalog /** Current lifecycle state; transitions emit `internal/status`. */ public state ``` 当前生命周期状态;状态转换会发出 `internal/status`。 [源码](../../vendor/cordis/src/fiber.ts#L194) ### fiber.dispose ```ts cordis-catalog /** Dispose this fiber: unload the plugin, then settle once cleanup finished. */ public readonly dispose: () => Promise ``` dispose 此 fiber:卸载插件,并在清理完成后结算。 [源码](../../vendor/cordis/src/fiber.ts#L196) ### fiber.store ```ts cordis-catalog /** Snapshot of required service implementations while loaded; `undefined` otherwise. */ public store: Dict | undefined ``` 加载期间所需服务实现的快照;其他情况下为 `undefined`。 [源码](../../vendor/cordis/src/fiber.ts#L198) ### fiber.inertia ```ts cordis-catalog /** The in-flight load/unload transition, if one is currently running. */ public inertia: Promise | undefined ``` 当前正在进行的加载或卸载转换;如果没有此类转换,则为 undefined。 [源码](../../vendor/cordis/src/fiber.ts#L200) ### fiber.name ```ts cordis-catalog /** The plugin's display name, inherited from the nearest named ancestor, else `'root'`. */ get name() ``` 插件的显示名称,继承自最近的具名祖先;如果不存在,则为 `'root'`。 [源码](../../vendor/cordis/src/fiber.ts#L336) ### fiber.assertActive() ```ts cordis-catalog /** * Throw if the fiber has already been disposed. * * @returns nothing when the fiber is still active. * @throws {CordisError} `INACTIVE_EFFECT` when the fiber's uid has been cleared. */ assertActive() ``` 如果 fiber 已经 dispose,则抛出异常。 **返回**:fiber 仍处于活动状态时不返回任何内容。 [源码](../../vendor/cordis/src/fiber.ts#L351) ### fiber.effect(execute, label?) ```ts cordis-catalog /** * Register a cleanup-aware effect on this fiber. * * `execute` runs immediately; the disposers it produces are collected and * run (in reverse order) either when the returned disposer is called or * when the fiber unloads, whichever comes first. Calling the disposer twice * is a no-op. Throws `CordisError('INACTIVE_EFFECT')` if the fiber is * already disposed, and `TypeError` if `execute` returns an invalid shape. * * @param execute — the effect body; see {@link Effect} for accepted shapes. * @param label — effect label shown in `getEffects()` diagnostics. * @returns a disposer that tears the effect down and settles once done. */ effect(execute: () => SyncEffect, label?: string): Disposable> effect(execute: () => Effect, label?: string): AsyncDisposable> ``` 在此 fiber 上注册一个支持清理的作用。 `execute` 会立即运行;它产生的清理函数将被收集,并在调用返回的清理函数或卸载 fiber 时按相反顺序运行,以先发生者为准。重复调用清理函数不会产生任何效果。如果 fiber 已经 dispose,则抛出 `CordisError('INACTIVE_EFFECT')`;如果结构无效,则抛出 `TypeError`,表示 `execute` 返回了不受支持的结果。 - `execute`:作用主体;可接受的结构见 `Effect`。 - `label`:在 `getEffects()` 诊断信息中显示的作用标签。 **返回**一个用于撤销该作用的清理函数,并在清理完成后结算。 [源码](../../vendor/cordis/src/fiber.ts#L415) ### fiber.getEffects() ```ts cordis-catalog /** * Return metadata for currently registered effects. * * @returns one {@link EffectMeta} tree per labeled live effect. */ getEffects() ``` 返回当前已注册作用的元数据。 **返回**:每个带标签的活动作用对应一棵 `EffectMeta` 树。 [源码](../../vendor/cordis/src/fiber.ts#L568) ### fiber.await() ```ts cordis-catalog /** * Wait for current lifecycle work and rethrow startup errors. * * @returns this fiber, once it has settled into a stable state. * @throws the config-validation or plugin-startup error, if any. */ async await() ``` 等待当前生命周期工作完成,并重新抛出启动错误。 **返回**:进入稳定状态后的此 fiber。 [源码](../../vendor/cordis/src/fiber.ts#L704) ### fiber.restart() ```ts cordis-catalog /** * Dispose and immediately reload this plugin with its current config. * * @returns a promise resolving once the reload settled. * @throws {CordisError} `INACTIVE_EFFECT` when the fiber is already disposed. */ async restart() ``` dispose 此插件,并立即使用其当前配置重新加载。 **返回**一个在重新加载完成后兑现的 promise。 [源码](../../vendor/cordis/src/fiber.ts#L718) ### fiber.update(config, noSave?) ```ts cordis-catalog /** * Validate and apply new config, then restart the plugin. * * Runs the `internal/update` waterfall first, so update hooks (and HMR) * can veto or replace the restart. * * @param config — the new raw config; validated before anything restarts. * @param noSave — hint for persistence hooks not to write the change back. * @returns the update waterfall result; the default restart returns a promise. * @throws when validation, an update listener, or the restarted plugin fails. */ update(config: any, noSave = false) ``` 校验并应用新配置,然后重新启动插件。 首先运行 `internal/update` waterfall(瀑布式事件),因此更新钩子(以及 HMR(热模块替换))可以否决或取代重新启动操作。 - `config`:新的原始配置;在任何内容重新启动前进行校验。 - `noSave`:提示持久化钩子不要写回此变更。 **返回**更新 waterfall 的结果;默认的重新启动操作返回一个 promise。 [源码](../../vendor/cordis/src/fiber.ts#L736) ## Effect `ctx.effect()` 和插件启动所接受的作用主体结果。 可以是单个清理函数、兑现为清理函数的 promise,或生成多个清理函数的(可能为异步的)可迭代对象。生成器作用会在每个清理函数产生时将其注册。 ```ts cordis-catalog /** * Effect body result accepted by `ctx.effect()` and plugin startup. * * Either a single disposer, a promise of one, or a (possibly async) iterable * yielding several — generator effects register each yielded disposer as it * is produced. */ type Effect = | SyncEffect | AsyncEffect ``` [源码](../../vendor/cordis/src/fiber.ts#L83) ## Disposable 作用返回的函数,用于在资源释放期间释放资源。 拥有该函数的 fiber 卸载时,清理函数会按注册的相反顺序运行;清理函数可以是异步的,此时卸载过程会等待其完成。 ```ts cordis-catalog /** * Function returned by an effect to release resources during disposal. * * Disposers run in reverse registration order when the owning fiber unloads; * they may be async, in which case unloading awaits them. */ type Disposable = () => T ``` [源码](../../vendor/cordis/src/fiber.ts#L74) ## EffectMeta 用于在诊断信息中公开嵌套作用标签的树节点。 ```ts cordis-catalog /** Tree node used to expose nested effect labels for diagnostics. */ interface EffectMeta { /** Human-readable effect label, e.g. `ctx.on("event")` or `ctx.provide("name")`. */ label: string /** Metadata of nested effects registered while this effect ran. */ children: EffectMeta[] } ``` [源码](../../vendor/cordis/src/fiber.ts#L96) ## CordisError 具有稳定机器可读错误码的框架错误。 ```ts cordis-catalog /** Framework error with a stable machine-readable code. */ class CordisError extends Error { /** * @param code — the stable error code; also the default message. * @param message — optional human-readable override. */ constructor(public code: CordisError.Code, message?: string) } /** Cordis error code definitions. */ namespace CordisError { export type Code = keyof typeof Code export const Code = { INACTIVE_EFFECT: 'cannot create effect on inactive context', } as const } ``` [源码](../../vendor/cordis/src/fiber.ts#L157) ## ValidationError 插件配置未通过 standard-schema 校验时抛出的错误。 ```ts cordis-catalog /** Error raised when plugin configuration fails standard-schema validation. */ class ValidationError extends TypeError { name = 'ValidationError' /** * Build the aggregated message from schema issues. * * @param issues — the standard-schema issues, one message line each. */ constructor(issues: readonly StandardSchemaV1.Issue[]) } ``` [源码](../../vendor/cordis/src/fiber.ts#L19)