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1 | import {PromiseValue} from './promise-value';
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2 |
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3 | type AsyncFunction = (...args: any[]) => Promise<unknown>;
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4 |
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5 | /**
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6 | Unwrap the return type of a function that returns a `Promise`.
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7 |
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8 | There has been [discussion](https://github.com/microsoft/TypeScript/pull/35998) about implementing this type in TypeScript.
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9 |
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10 | @example
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11 | ```ts
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12 | import {AsyncReturnType} from 'type-fest';
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13 | import {asyncFunction} from 'api';
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14 |
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15 | // This type resolves to the unwrapped return type of `asyncFunction`.
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16 | type Value = AsyncReturnType<typeof asyncFunction>;
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17 |
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18 | async function doSomething(value: Value) {}
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19 |
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20 | asyncFunction().then(value => doSomething(value));
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21 | ```
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22 | */
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23 | export type AsyncReturnType<Target extends AsyncFunction> = PromiseValue<ReturnType<Target>>;
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