@angular/platform-server
Version:
Angular - library for using Angular in Node.js
59 lines • 7.23 kB
JavaScript
/**
* @license
* Copyright Google LLC 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 { DOCUMENT } from '@angular/common';
import { APP_ID, NgModule, TransferState } from '@angular/core';
import { BEFORE_APP_SERIALIZED } from './tokens';
import * as i0 from "@angular/core";
export const TRANSFER_STATE_SERIALIZATION_PROVIDERS = [{
provide: BEFORE_APP_SERIALIZED,
useFactory: serializeTransferStateFactory,
deps: [DOCUMENT, APP_ID, TransferState],
multi: true,
}];
function serializeTransferStateFactory(doc, appId, transferStore) {
return () => {
// The `.toJSON` here causes the `onSerialize` callbacks to be called.
// These callbacks can be used to provide the value for a given key.
const content = transferStore.toJson();
if (transferStore.isEmpty) {
// The state is empty, nothing to transfer,
// avoid creating an extra `<script>` tag in this case.
return;
}
const script = doc.createElement('script');
script.id = appId + '-state';
script.setAttribute('type', 'application/json');
script.textContent = content;
// It is intentional that we add the script at the very bottom. Angular CLI script tags for
// bundles are always `type="module"`. These are deferred by default and cause the transfer
// transfer data to be queried only after the browser has finished parsing the DOM.
doc.body.appendChild(script);
};
}
/**
* NgModule to install on the server side while using the `TransferState` to transfer state from
* server to client.
*
* Note: this module is not needed if the `renderApplication` function is used.
* The `renderApplication` makes all providers from this module available in the application.
*
* @publicApi
* @deprecated no longer needed, you can inject the `TransferState` in an app without providing
* this module.
*/
class ServerTransferStateModule {
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.0.4", ngImport: i0, type: ServerTransferStateModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule }); }
static { this.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: "14.0.0", version: "16.0.4", ngImport: i0, type: ServerTransferStateModule }); }
static { this.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: "12.0.0", version: "16.0.4", ngImport: i0, type: ServerTransferStateModule }); }
}
export { ServerTransferStateModule };
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.0.4", ngImport: i0, type: ServerTransferStateModule, decorators: [{
type: NgModule,
args: [{}]
}] });
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