Current File : //lib/node_modules/pm2/node_modules/async/reflect.js
'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'];
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