ng-zorro-antd
Version:
An enterprise-class UI components based on Ant Design and Angular
52 lines • 6.07 kB
JavaScript
/**
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/LICENSE
*/
import { Injectable } from '@angular/core';
import { environment } from 'ng-zorro-antd/core/environments';
import * as i0 from "@angular/core";
/**
* When running in test, singletons should not be destroyed. So we keep references of singletons
* in this global variable.
*/
const testSingleRegistry = new Map();
/**
* Some singletons should have life cycle that is same to Angular's. This service make sure that
* those singletons get destroyed in HMR.
*/
export class NzSingletonService {
constructor() {
/**
* This registry is used to register singleton in dev mode.
* So that singletons get destroyed when hot module reload happens.
*
* This works in prod mode too but with no specific effect.
*/
this._singletonRegistry = new Map();
}
get singletonRegistry() {
return environment.isTestMode ? testSingleRegistry : this._singletonRegistry;
}
registerSingletonWithKey(key, target) {
const alreadyHave = this.singletonRegistry.has(key);
const item = alreadyHave ? this.singletonRegistry.get(key) : this.withNewTarget(target);
if (!alreadyHave) {
this.singletonRegistry.set(key, item);
}
}
getSingletonWithKey(key) {
return this.singletonRegistry.has(key) ? this.singletonRegistry.get(key).target : null;
}
withNewTarget(target) {
return {
target
};
}
}
NzSingletonService.ɵprov = i0.ɵɵdefineInjectable({ factory: function NzSingletonService_Factory() { return new NzSingletonService(); }, token: NzSingletonService, providedIn: "root" });
NzSingletonService.decorators = [
{ type: Injectable, args: [{
providedIn: 'root'
},] }
];
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