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17 lines
607 B
TypeScript
17 lines
607 B
TypeScript
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import { TaskInstance } from 'ember-concurrency';
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/**
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* A task can be used instead of a promise in some cases, but a task
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* has the advantage of being cancellable. See ember-concurrency.
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*/
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export type PromiseOrTask<T> = PromiseLike<T> | TaskInstance<T> | undefined;
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/**
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* Will check if the type is a promise or a task. The difference is that
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* a task is cancellable where as a promise not (for now).
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* @param obj the object to check
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*/
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export function isTask<T>(obj: PromiseOrTask<T>): obj is TaskInstance<T> {
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return typeof obj !== 'undefined' && (<TaskInstance<T>>obj).cancel !== undefined;
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}
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