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deepseek-harness/docs/cordis-api/events.md
Tianyi Cui f7323354bb docs: generate each subsystem's cordis surface into its own page; delete the flat catalogs
Rebuild of the region machinery (PR3) on the post-#904 Typert projection:
renderPageRegion/renderInheritedPage live in dsh-typert-generator beside the
projection; scripts/gen-cordis-catalog.ts owns the curated SERVICE_PAGE /
EVENT_SCOPE_PAGE / SERVICE_WALK_EXEMPTIONS / LINK_MAP partition (fail-loud in
both directions, with the independent Context-merge scan backstopping the
projection's blind spot), spliceRegion, and the guarded pair auto-record.
docs/cordis-catalog/ is deleted: the flat events/services catalogs dissolve
into per-page regions and docs/cordis-catalog/core moves to docs/cordis-api/
with the inherited tier as its own generated page. The partition absorbs the
post-regrouping surface: ctx.typert → invariants.md, ctx.directoryPicker →
workspace.md, skills/* events → skills.md, and the four launcher-provided tui
accessor values join the named exemptions.
2026-08-09 01:31:57 +08:00

208 lines
7.2 KiB
Markdown

<!-- Generated by scripts/gen-cordis-catalog.ts — do not edit by hand.
Run `pnpm run gen-cordis-catalog` to regenerate. -->
# Events
The event-dispatch API mixed into every context. Harness event declarations and their dispatch modes are generated into each owning [subsystem page](../subsystems/core.md).
### ctx.parallel(name, ...args)
```ts cordis-catalog
/**
* Dispatch an event, running all listeners concurrently.
*
* @param name — the event name.
* @param args — arguments passed to every listener.
* @returns a promise resolving once every listener has settled.
*/
parallel<K extends keyof Events>(name: K, ...args: Parameters<Events[K]>): Promise<void>
parallel<K extends keyof Events>(thisArg: NoInfer<ThisType<Events[K]>>, name: K, ...args: Parameters<Events[K]>): Promise<void>
```
Dispatch an event, running all listeners concurrently.
- `name` — the event name.
- `args` — arguments passed to every listener.
**Returns** a promise resolving once every listener has settled.
[Source](../../vendor/cordis/src/events.ts#L44)
### ctx.emit(name, ...args)
```ts cordis-catalog
/**
* Dispatch an event synchronously, ignoring listener return values.
*
* @param name — the event name.
* @param args — arguments passed to every listener.
*/
emit<K extends keyof Events>(name: K, ...args: Parameters<Events[K]>): void
emit<K extends keyof Events>(thisArg: NoInfer<ThisType<Events[K]>>, name: K, ...args: Parameters<Events[K]>): void
```
Dispatch an event synchronously, ignoring listener return values.
- `name` — the event name.
- `args` — arguments passed to every listener.
[Source](../../vendor/cordis/src/events.ts#L53)
### ctx.serial(name, ...args)
```ts cordis-catalog
/**
* Dispatch an event, awaiting listeners in order until one bails.
*
* @param name — the event name.
* @param args — arguments passed to each listener.
* @returns the first bail value (non-null, non-false, non-undefined), if any.
*/
serial<K extends keyof Events>(name: K, ...args: Parameters<Events[K]>): Promisify<ReturnType<Events[K]>>
serial<K extends keyof Events>(thisArg: NoInfer<ThisType<Events[K]>>, name: K, ...args: Parameters<Events[K]>): Promisify<ReturnType<Events[K]>>
```
Dispatch an event, awaiting listeners in order until one bails.
- `name` — the event name.
- `args` — arguments passed to each listener.
**Returns** the first bail value (non-null, non-false, non-undefined), if any.
[Source](../../vendor/cordis/src/events.ts#L63)
### ctx.bail(name, ...args)
```ts cordis-catalog
/**
* Dispatch an event, calling listeners in order until one bails.
*
* @param name — the event name.
* @param args — arguments passed to each listener.
* @returns the first bail value (non-null, non-false, non-undefined), if any.
*/
bail<K extends keyof Events>(name: K, ...args: Parameters<Events[K]>): ReturnType<Events[K]>
bail<K extends keyof Events>(thisArg: NoInfer<ThisType<Events[K]>>, name: K, ...args: Parameters<Events[K]>): ReturnType<Events[K]>
```
Dispatch an event, calling listeners in order until one bails.
- `name` — the event name.
- `args` — arguments passed to each listener.
**Returns** the first bail value (non-null, non-false, non-undefined), if any.
[Source](../../vendor/cordis/src/events.ts#L73)
### ctx.waterfall(name, ...args)
```ts cordis-catalog
/**
* Dispatch an event whose last argument is a `next` continuation.
*
* Each listener wraps the rest of the chain: calling `next()` invokes the
* next listener (finally the built-in behavior); not calling it vetoes.
*
* @param name — the event name.
* @param args — listener arguments; the final one is the innermost `next`.
* @returns the outermost listener's return value.
*/
waterfall<K extends keyof Events>(name: K, ...args: Parameters<Events[K]>): ReturnType<Events[K]>
waterfall<K extends keyof Events>(thisArg: NoInfer<ThisType<Events[K]>>, name: K, ...args: Parameters<Events[K]>): ReturnType<Events[K]>
```
Dispatch an event whose last argument is a `next` continuation.
Each listener wraps the rest of the chain: calling `next()` invokes the next listener (finally the built-in behavior); not calling it vetoes.
- `name` — the event name.
- `args` — listener arguments; the final one is the innermost `next`.
**Returns** the outermost listener's return value.
[Source](../../vendor/cordis/src/events.ts#L86)
### ctx.on(name, listener, options?)
```ts cordis-catalog
/**
* Register an event listener owned by the current fiber.
*
* @param name — the event name to listen for.
* @param listener — called with the dispatch arguments.
* @param options — listener options; a boolean is shorthand for `prepend`.
* @returns a disposer removing the listener; `true` if it was still registered.
*/
on<K extends keyof Events>(name: K, listener: Events[K], options?: boolean | EventOptions): () => boolean
```
Register an event listener owned by the current fiber.
- `name` — the event name to listen for.
- `listener` — called with the dispatch arguments.
- `options` — listener options; a boolean is shorthand for `prepend`.
**Returns** a disposer removing the listener; `true` if it was still registered.
[Source](../../vendor/cordis/src/events.ts#L97)
### ctx.once(name, listener, options?)
```ts cordis-catalog
/**
* Same as `on()`, but the listener disposes itself after its first call.
*
* @param name — the event name to listen for.
* @param listener — called at most once with the dispatch arguments.
* @param options — listener options; a boolean is shorthand for `prepend`.
* @returns a disposer removing the listener; `true` if it was still registered.
*/
once<K extends keyof Events>(name: K, listener: Events[K], options?: boolean | EventOptions): () => boolean
```
Same as `on()`, but the listener disposes itself after its first call.
- `name` — the event name to listen for.
- `listener` — called at most once with the dispatch arguments.
- `options` — listener options; a boolean is shorthand for `prepend`.
**Returns** a disposer removing the listener; `true` if it was still registered.
[Source](../../vendor/cordis/src/events.ts#L106)
## EventOptions
Options accepted by `ctx.on()` and `ctx.once()`.
```ts cordis-catalog
/** Options accepted by `ctx.on()` and `ctx.once()`. */
interface EventOptions {
/** Add the listener before existing listeners for the same event. */
prepend?: boolean
/** Receive the event regardless of context filter checks. */
global?: boolean
}
```
[Source](../../vendor/cordis/src/events.ts#L112)
## DispatchMode
Event dispatch strategy used by the event service.
`emit` runs synchronous listeners without awaiting them, `parallel` awaits all listeners together, `serial` awaits them in order until one bails, `bail` stops on the first synchronous bail value, and `waterfall` composes listeners around a final `next` callback.
```ts cordis-catalog
/**
* Event dispatch strategy used by the event service.
*
* `emit` runs synchronous listeners without awaiting them, `parallel` awaits
* all listeners together, `serial` awaits them in order until one bails,
* `bail` stops on the first synchronous bail value, and `waterfall` composes
* listeners around a final `next` callback.
*/
type DispatchMode = 'emit' | 'parallel' | 'serial' | 'bail' | 'waterfall'
```
[Source](../../vendor/cordis/src/events.ts#L32)