jiaojing/cloudfunctions/quickstartFunctions/node_modules/@cloudbase/database/dist/esm/lib/util.js

export var createPromiseCallback = function () {
    var cb;
    if (!Promise) {
        cb = function () { };
        cb.promise = {};
        var throwPromiseNotDefined = function () {
            throw new Error('Your Node runtime does support ES6 Promises. ' +
                'Set "global.Promise" to your preferred implementation of promises.');
        };
        Object.defineProperty(cb.promise, 'then', { get: throwPromiseNotDefined });
        Object.defineProperty(cb.promise, 'catch', { get: throwPromiseNotDefined });
        return cb;
    }
    var promise = new Promise(function (resolve, reject) {
        cb = function (err, data) {
            if (err)
                return reject(err);
            return resolve(data);
        };
    });
    cb.promise = promise;
    return cb;
};