/TypeScript/Typescript returntype remove promise

Typescript returntype remove promise

type UnPromisifiedObject<T> = {[k in keyof T]: UnPromisify<T[k]>}
type UnPromisify<T> = T extends Promise<infer U> ? U : T;

async function promise_props<T extends {[key: string]: Promise<any>}>(obj: T): Promise<UnPromisifiedObject<T>> {
    const keys = Object.keys(obj);
    const awaitables = keys.map(key => obj[key]);

    const values = await Promise.all(awaitables);
    const result = {} as any;

    keys.forEach((key, i) => {
        result[key] = values[i];
    });
    return result as UnPromisifiedObject<T>;
}

async function main() {
    const x = {
        company: Promise.resolve("company"),
        page: Promise.resolve(1)
    };
    const res = await promise_props(x);
    const company = res.company;  // company is a string here
    const page = res.page;        // page is a number here
}

Source: stackoverflow.com

Similar codes

0 vote162 views1 answer
Typescript reduce filter examples
TypeScript
0 vote158 views1 answer
How to setup netflix workflow worker
TypeScript
13 votes176 views3 answers
Typescript integer
TypeScript
19 votes180 views4 answers
How to write lists to text file python
TypeScript
1 vote170 views1 answer
Typescript mix props
TypeScript
0 vote176 views2 answers
Python check if dir exists else create
TypeScript
0 vote184 views1 answer
Android get digits from string
TypeScript
0 vote207 views1 answer
Hack roblox account easy
TypeScript
2 votes165 views1 answer
Adonis many to many
TypeScript
0 vote152 views1 answer
Render html tags in typescript
TypeScript