/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 vote124 views1 answer
Install material ui typescript
TypeScript
2 votes126 views1 answer
How long does it take to learn typescript
TypeScript
0 vote131 views1 answer
Mutiple date formats in snowflake during copy
TypeScript
0 vote135 views1 answer
"Listed following are distinguishing characteristics of different end states of stars. Match these to the appropriate consequence of stellar death."
TypeScript
0 vote215 views1 answer
How test with limited information
TypeScript
0 vote128 views2 answers
Calculate distance between two latitude longitude points in google maps api
TypeScript
1 vote129 views2 answers
Append to lists python
TypeScript
0 vote131 views1 answer
Wordpress number of posts by user
TypeScript
0 vote129 views1 answer
Electronjs remove menubar
TypeScript
1 vote127 views1 answer
Fake browser visti python headers
TypeScript