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'use strict'; Object.defineProperty(exports, "__esModule", { value: true }); exports.default = reflect; var _initialParams = require('./internal/initialParams.js'); var _initialParams2 = _interopRequireDefault(_initialParams); var _wrapAsync = require('./internal/wrapAsync.js'); var _wrapAsync2 = _interopRequireDefault(_wrapAsync); function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } /** * Wraps the async function in another function that always completes with a * result object, even when it errors. * * The result object has either the property `error` or `value`. * * @name reflect * @static * @memberOf module:Utils * @method * @category Util * @param {AsyncFunction} fn - The async function you want to wrap * @returns {Function} - A function that always passes null to it's callback as * the error. The second argument to the callback will be an `object` with * either an `error` or a `value` property. * @example * * async.parallel([ * async.reflect(function(callback) { * // do some stuff ... * callback(null, 'one'); * }), * async.reflect(function(callback) { * // do some more stuff but error ... * callback('bad stuff happened'); * }), * async.reflect(function(callback) { * // do some more stuff ... * callback(null, 'two'); * }) * ], * // optional callback * function(err, results) { * // values * // results[0].value = 'one' * // results[1].error = 'bad stuff happened' * // results[2].value = 'two' * }); */ function reflect(fn) { var _fn = (0, _wrapAsync2.default)(fn); return (0, _initialParams2.default)(function reflectOn(args, reflectCallback) { args.push((error, ...cbArgs) => { let retVal = {}; if (error) { retVal.error = error; } if (cbArgs.length > 0) { var value = cbArgs; if (cbArgs.length <= 1) { [value] = cbArgs; } retVal.value = value; } reflectCallback(null, retVal); }); return _fn.apply(this, args); }); } module.exports = exports['default'];