@graphql-tools/graphql/esm/jsutils/promiseForObject.js

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/**
 * 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 function promiseForObject(object) {
    return Promise.all(Object.values(object)).then(resolvedValues => {
        const resolvedObject = Object.create(null);
        for (const [i, key] of Object.keys(object).entries()) {
            resolvedObject[key] = resolvedValues[i];
        }
        return resolvedObject;
    });
}