/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 vote122 views1 answer
"http://" looks like a URL. Beautiful Soup is not an HTTP client. You should probably use an HTTP client like requests to get the document behind the URL, and feed that document to Beautiful Soup. markup
TypeScript
0 vote128 views1 answer
In javaWrite a plan that prints all the perfect numbers in the range of 1 to 1000
TypeScript
5 votes69 views1 answer
Python tkinter remove widget
TypeScript
1 vote123 views1 answer
Node fetch exports is not defined
TypeScript
3 votes101 views1 answer
Check if key exists in json typescript
TypeScript
1 vote106 views1 answer
Reactive form disable
TypeScript
0 vote116 views2 answers
Use pipe in ts file angulr
TypeScript
0 vote110 views1 answer
React Draft Wysiwyg typescript
TypeScript
1 vote117 views1 answer
==> restfulapi: Booting VM... There was an error while executing `VBoxManage`, a CLI used by Vagrant for controlling VirtualBox. The command and stderr is shown below.
TypeScript
2 votes106 views5 answers
Ng class in angular
TypeScript