@angular/core
Version:
Angular - the core framework
66 lines • 6.84 kB
JavaScript
/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import * as tslib_1 from "tslib";
import { isPromise } from '../src/util/lang';
import { Inject, Injectable, InjectionToken, Optional } from './di';
/**
* A function that will be executed when an application is initialized.
*
* @publicApi
*/
export var APP_INITIALIZER = new InjectionToken('Application Initializer');
/**
* A class that reflects the state of running {@link APP_INITIALIZER}s.
*
* @publicApi
*/
var ApplicationInitStatus = /** @class */ (function () {
function ApplicationInitStatus(appInits) {
var _this = this;
this.appInits = appInits;
this.initialized = false;
this.done = false;
this.donePromise = new Promise(function (res, rej) {
_this.resolve = res;
_this.reject = rej;
});
}
/** @internal */
ApplicationInitStatus.prototype.runInitializers = function () {
var _this = this;
if (this.initialized) {
return;
}
var asyncInitPromises = [];
var complete = function () {
_this.done = true;
_this.resolve();
};
if (this.appInits) {
for (var i = 0; i < this.appInits.length; i++) {
var initResult = this.appInits[i]();
if (isPromise(initResult)) {
asyncInitPromises.push(initResult);
}
}
}
Promise.all(asyncInitPromises).then(function () { complete(); }).catch(function (e) { _this.reject(e); });
if (asyncInitPromises.length === 0) {
complete();
}
this.initialized = true;
};
ApplicationInitStatus = tslib_1.__decorate([
Injectable(),
tslib_1.__param(0, Inject(APP_INITIALIZER)), tslib_1.__param(0, Optional()),
tslib_1.__metadata("design:paramtypes", [Array])
], ApplicationInitStatus);
return ApplicationInitStatus;
}());
export { ApplicationInitStatus };
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