'use strict';
/*
* Simple task queue to sequentialize actions. Assumes
* callbacks will eventually fire (once).
*/
var Promise = require('./utils').Promise;
function TaskQueue() {
this.promise = new Promise(function (fulfill) {fulfill(); });
}
TaskQueue.prototype.add = function (promiseFactory) {
this.promise = this.promise.catch(function () {
// just recover
}).then(function () {
return promiseFactory();
});
return this.promise;
};
TaskQueue.prototype.finish = function () {
return this.promise;
};
module.exports = TaskQueue;
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