import type { ObjMap } from './ObjMap.js';
/**
* This function transforms a JS object `ObjMap<Promise<T>>` into
* a `Promise<ObjMap<T>>`
*
* This is akin to bluebird's `Promise.props`, but implemented only using
* `Promise.all` so it will work with any implementation of ES6 promises.
*/
export async function promiseForObject<T>(
object: ObjMap<Promise<T>>,
): Promise<ObjMap<T>> {
const keys = Object.keys(object);
const values = Object.values(object);
const resolvedValues = await Promise.all(values);
const resolvedObject = Object.create(null);
for (let i = 0; i < keys.length; ++i) {
resolvedObject[keys[i]] = resolvedValues[i];
}
return resolvedObject;
}