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Contents
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = forever;
var _noop = require('lodash/noop');
var _noop2 = _interopRequireDefault(_noop);
var _onlyOnce = require('./internal/onlyOnce');
var _onlyOnce2 = _interopRequireDefault(_onlyOnce);
var _ensureAsync = require('./ensureAsync');
var _ensureAsync2 = _interopRequireDefault(_ensureAsync);
var _wrapAsync = require('./internal/wrapAsync');
var _wrapAsync2 = _interopRequireDefault(_wrapAsync);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/**
* Calls the asynchronous function `fn` with a callback parameter that allows it
* to call itself again, in series, indefinitely.
* If an error is passed to the callback then `errback` is called with the
* error, and execution stops, otherwise it will never be called.
*
* @name forever
* @static
* @memberOf module:ControlFlow
* @method
* @category Control Flow
* @param {AsyncFunction} fn - an async function to call repeatedly.
* Invoked with (next).
* @param {Function} [errback] - when `fn` passes an error to it's callback,
* this function will be called, and execution stops. Invoked with (err).
* @example
*
* async.forever(
* function(next) {
* // next is suitable for passing to things that need a callback(err [, whatever]);
* // it will result in this function being called again.
* },
* function(err) {
* // if next is called with a value in its first parameter, it will appear
* // in here as 'err', and execution will stop.
* }
* );
*/
function forever(fn, errback) {
var done = (0, _onlyOnce2.default)(errback || _noop2.default);
var task = (0, _wrapAsync2.default)((0, _ensureAsync2.default)(fn));
function next(err) {
if (err) return done(err);
task(next);
}
next();
}
module.exports = exports['default'];
Version data entries
48 entries across 46 versions & 11 rubygems