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/**
* @file async-stream.js
*/
'use strict';
Object.defineProperty(exports, '__esModule', {
value: true
});
var _createClass = (function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ('value' in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; })();
var _get = function get(_x, _x2, _x3) { var _again = true; _function: while (_again) { var object = _x, property = _x2, receiver = _x3; _again = false; if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { _x = parent; _x2 = property; _x3 = receiver; _again = true; desc = parent = undefined; continue _function; } } else if ('value' in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } } };
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { 'default': obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } }
function _inherits(subClass, superClass) { if (typeof superClass !== 'function' && superClass !== null) { throw new TypeError('Super expression must either be null or a function, not ' + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
var _stream = require('./stream');
var _stream2 = _interopRequireDefault(_stream);
/**
* A wrapper around the Stream class to use setTiemout
* and run stream "jobs" Asynchronously
*
* @class AsyncStream
* @extends Stream
*/
var AsyncStream = (function (_Stream) {
_inherits(AsyncStream, _Stream);
function AsyncStream() {
_classCallCheck(this, AsyncStream);
_get(Object.getPrototypeOf(AsyncStream.prototype), 'constructor', this).call(this, _stream2['default']);
this.jobs = [];
this.delay = 1;
this.timeout_ = null;
}
/**
* process an async job
*
* @private
*/
_createClass(AsyncStream, [{
key: 'processJob_',
value: function processJob_() {
this.jobs.shift()();
if (this.jobs.length) {
this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);
} else {
this.timeout_ = null;
}
}
/**
* push a job into the stream
*
* @param {Function} job the job to push into the stream
*/
}, {
key: 'push',
value: function push(job) {
this.jobs.push(job);
if (!this.timeout_) {
this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);
}
}
}]);
return AsyncStream;
})(_stream2['default']);
exports['default'] = AsyncStream;
module.exports = exports['default'];
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