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* Do not truncate errors, pretty output * Introduce helpers for sagas * Update yarn lock
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import { Effect } from 'redux-saga/effects'; | ||
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type ExtPromise<T> = T extends Promise<infer U> ? U : T; | ||
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type ExtSaga<T> = T extends IterableIterator<infer U> ? Exclude<U, Effect | Effect[]> : T; | ||
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/** | ||
* Use this helper to unwrap return types from effects like Call / Apply | ||
* In the case of calling a function that returns a promise, this helper will unwrap the | ||
* promise and return the type inside it. In the case of calling another saga / generator, | ||
* this helper will return the actual return value of the saga / generator, otherwise, | ||
* it'll return the original type. | ||
* | ||
* NOTE 1: When using this to extract the type of a Saga, make sure to remove the `SagaIterator` | ||
* return type of the saga if it contains one, since that masks the actual return type of the saga. | ||
* | ||
* NOTE 2: You will most likely need to use the `typeof` operator to use this helper. | ||
* E.g type X = UnwrapEffects<typeof MyFunc/MySaga> | ||
*/ | ||
export type UnwrapEffects<T> = T extends (...args: any[]) => any | ||
? ExtSaga<ReturnType<T>> | ||
: ExtPromise<T>; |
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