injectAsyncRateLimiter

Call Signature#

function injectAsyncRateLimiter<TFn>(fn, options): AngularAsyncRateLimiter<TFn>;

Defined in: packages/angular-pacer/src/async-rate-limiter/injectAsyncRateLimiter.ts:103

Creates and manages an Angular AsyncRateLimiter in the current injection context.

Allows asynchronous calls up to the configured limit within a fixed or sliding window. Calls beyond the limit are rejected rather than queued.

Options and state#

Accepts static options or an options factory. Factories are read lazily, and signal dependencies update the existing core instance. Local options override provider defaults. Methods apply current options before executing and schedule work outside Angular's zone. The provided function runs inside Angular's zone.

Pass a selector to expose reactive core state through state(). Without a selector, state() returns {}; operations remain available on the ref.

Cleanup#

The default cleanup is to abort running work. Set onUnmount to replace it.

Type Parameters#

TFn#

TFn extends AnyAsyncFunction

Parameters#

fn#

TFn

The callback invoked by the core utility.

options#

MaybeAccessor<AngularAsyncRateLimiterOptions<TFn>>

Core options or a reactive factory returning them.

Returns#

AngularAsyncRateLimiter<TFn>

A ref containing stable methods and a readonly selected-state signal.

Example#

// In a component or service injection context.
const utility = injectAsyncRateLimiter(
  (query: string) => Promise.resolve(query),
  () => ({ limit: 5, window: 1000 }),
  (state) => state.isExecuting,
)
utility.maybeExecute('search')
console.log(utility.state())

Call Signature#

function injectAsyncRateLimiter<TFn, TSelected>(
   fn,
   options,
selector): AngularAsyncRateLimiter<TFn, TSelected>;

Defined in: packages/angular-pacer/src/async-rate-limiter/injectAsyncRateLimiter.ts:114

Creates an Angular AsyncRateLimiter with a reactive selector result.

Type Parameters#

TFn#

TFn extends AnyAsyncFunction

TSelected#

TSelected

Parameters#

fn#

TFn

The callback invoked by the core utility.

options#

MaybeAccessor<AngularAsyncRateLimiterOptions<TFn>>

Core options or a reactive options factory.

selector#

(state) => TSelected

Selects the state exposed by the returned state signal.

Returns#

AngularAsyncRateLimiter<TFn, TSelected>

The utility ref with the selected state.