39 lines
1.3 KiB
TypeScript
39 lines
1.3 KiB
TypeScript
export interface Limit {
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/**
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@param fn - Promise-returning/async function.
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@param arguments - Any arguments to pass through to `fn`. Support for passing arguments on to the `fn` is provided in order to be able to avoid creating unnecessary closures. You probably don't need this optimization unless you're pushing a lot of functions.
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@returns The promise returned by calling `fn(...arguments)`.
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*/
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<Arguments extends unknown[], ReturnType>(
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fn: (...arguments: Arguments) => PromiseLike<ReturnType> | ReturnType,
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...arguments: Arguments
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): Promise<ReturnType>;
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/**
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The number of promises that are currently running.
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*/
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readonly activeCount: number;
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/**
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The number of promises that are waiting to run (i.e. their internal `fn` was not called yet).
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*/
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readonly pendingCount: number;
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/**
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Discard pending promises that are waiting to run.
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This might be useful if you want to teardown the queue at the end of your program's lifecycle or discard any function calls referencing an intermediary state of your app.
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Note: This does not cancel promises that are already running.
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*/
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clearQueue(): void;
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}
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/**
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Run multiple promise-returning & async functions with limited concurrency.
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@param concurrency - Concurrency limit. Minimum: `1`.
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@returns A `limit` function.
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*/
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export default function pLimit(concurrency: number): Limit;
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