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MeyCry/ReturnedValueFromObjectMethodByKey.ts

Last active March 31, 2020 14:11
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TypeScript Returned Value From Object Method By Key
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ReturnedValueFromObjectMethodByKey.ts
/**
* example:
* const aObj = {
* b: () => 42,
* c: () => "hello"
* }
* type ObjExample = ReturnedValueFromObjectMethodByKey<typeof aObj>;
* ObjExample type will be: {b: number; c: string}
*/
export type ReturnedValueFromObjectMethodByKey<T> = {
[K in keyof T]: T[K] extends (...args: any) => any ? ReturnType<T[K]> : T[K];
};
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