hippofish/packages/backend/src/misc/prelude/await-all.ts
2024-02-13 15:59:27 +00:00

26 lines
651 B
TypeScript

/*
* SPDX-FileCopyrightText: syuilo and misskey-project
* SPDX-License-Identifier: AGPL-3.0-only
*/
export type Promiseable<T> = {
[K in keyof T]: Promise<T[K]> | T[K];
};
export async function awaitAll<T>(obj: Promiseable<T>): Promise<T> {
const target = {} as T;
const keys = Object.keys(obj) as unknown as (keyof T)[];
const values = Object.values(obj) as any[];
const resolvedValues = await Promise.all(values.map(value =>
(!value || !value.constructor || value.constructor.name !== 'Object')
? value
: awaitAll(value),
));
for (let i = 0; i < keys.length; i++) {
target[keys[i]] = resolvedValues[i];
}
return target;
}