Rocket.Chat/app/apps/server/bridges/users.js

import { Users } from '../../../models/server';

export class AppUserBridge {
	constructor(orch) {
		this.orch = orch;
	}

	async getById(userId, appId) {
		this.orch.debugLog(`The App ${ appId } is getting the userId: "${ userId }"`);

		return this.orch.getConverters().get('users').convertById(userId);
	}

	async getByUsername(username, appId) {
		this.orch.debugLog(`The App ${ appId } is getting the username: "${ username }"`);

		return this.orch.getConverters().get('users').convertByUsername(username);
	}

	async getActiveUserCount() {
		return Users.getActiveLocalUserCount();
	}
}