@buka/nestjs-config/dist/esm/src/utils/compose-loader.js

An easy to use nestjs config module

import { deepMergeAll } from './deep-merge-all.js';
export function composeLoader(loaders) {
    return async (options) => {
        const configs = await Promise.all(loaders.map((loader) => loader(options)));
        return deepMergeAll(configs);
    };
}