angular-meta
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angular-meta is a lightweight and flexible SEO utility for Angular applications, designed to work seamlessly with Server-Side Rendering (SSR). It dynamically updates <meta>, <link>, and structured schema tags using route data, parameters, and URL. Easily
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{"version":3,"file":"angular-meta.mjs","sources":["../../../projects/angular-meta/src/config.ts","../../../projects/angular-meta/src/service/angular-meta.service.ts","../../../projects/angular-meta/src/resolver/angular-meta.resolver.ts","../../../projects/angular-meta/src/public-api.ts","../../../projects/angular-meta/src/angular-meta.ts"],"sourcesContent":["import { InjectionToken, Provider } from '@angular/core';\r\n\r\n/**\r\n * @param apiEndpoint - required\r\n * @param forceCreation - True to create a new element without checking whether one already exists.\r\n */\r\nexport interface AngularMetaConfig {\r\n apiEndpoint: string;\r\n forceCreation?: boolean;\r\n}\r\nexport const ANGULAR_META_CONFIG = new InjectionToken<AngularMetaConfig>(\r\n 'ANGULAR_META_CONFIG'\r\n);\r\n\r\ninterface LinkTag {\r\n href?: string;\r\n rel?: string;\r\n type?: string;\r\n title?: string;\r\n media?: string;\r\n}\r\n\r\ninterface MetaTag {\r\n charset?: string;\r\n content?: string;\r\n httpEquiv?: string;\r\n id?: string;\r\n itemprop?: string;\r\n name?: string;\r\n property?: string;\r\n scheme?: string;\r\n url?: string;\r\n}\r\n\r\ntype DataTag = LinkTag | MetaTag;\r\n\r\nexport interface AngularMetaData {\r\n title: string;\r\n meta: Array<DataTag>;\r\n schema: any;\r\n}\r\n\r\nexport function provideAngularMeta(config: AngularMetaConfig): Provider[] {\r\n return [{ provide: ANGULAR_META_CONFIG, useValue: config }];\r\n}\r\n","import { HttpClient } from '@angular/common/http';\r\nimport { inject, Injectable } from '@angular/core';\r\nimport { filter, firstValueFrom, map, of, switchMap } from 'rxjs';\r\nimport { ANGULAR_META_CONFIG, AngularMetaData } from '../config';\r\nimport { Meta, Title } from '@angular/platform-browser';\r\nimport { DOCUMENT } from '@angular/common';\r\nimport { ActivatedRoute, NavigationEnd, Router } from '@angular/router';\r\n\r\n@Injectable({ providedIn: 'root' })\r\nexport class AngularMetaCtrl {\r\n private config = inject(ANGULAR_META_CONFIG);\r\n private httpClient = inject(HttpClient);\r\n private meta = inject(Meta);\r\n private title = inject(Title);\r\n private document = inject(DOCUMENT);\r\n private router = inject(Router);\r\n private activatedRoute = inject(ActivatedRoute);\r\n\r\n async getMetas(data: any) {\r\n return await firstValueFrom(\r\n this.httpClient.get<AngularMetaData>(this.config.apiEndpoint, {\r\n params: data,\r\n headers: { 'content-type': 'application/json' },\r\n })\r\n );\r\n }\r\n\r\n async setMetaData(data: AngularMetaData) {\r\n try {\r\n // Set title\r\n this.title.setTitle(data.title);\r\n // Set meta tags\r\n for (let i = 0, l = data.meta.length; i < l; i++) {\r\n const each: any = data.meta[i];\r\n if (each.hasOwnProperty('href')) {\r\n const link = this.document.createElement('link');\r\n if (each.hasOwnProperty('href')) {\r\n link.href = each.href;\r\n }\r\n if (each.hasOwnProperty('rel')) {\r\n link.rel = each.rel;\r\n }\r\n if (each.hasOwnProperty('type')) {\r\n link.type = each.type;\r\n }\r\n if (each.hasOwnProperty('title')) {\r\n link.title = each.title;\r\n }\r\n if (each.hasOwnProperty('media')) {\r\n link.media = each.media;\r\n }\r\n this.document.head.appendChild(link);\r\n } else {\r\n this.meta.addTag(each, this.config.forceCreation ?? false);\r\n }\r\n }\r\n // Set schema\r\n const all = this.document.head.getElementsByTagName('script');\r\n let isExists = null;\r\n for (let i = 0, l = all.length; i < l; i++) {\r\n if (all[i].id === `ng_metas_page_json_ld`) {\r\n isExists = all[i];\r\n break;\r\n }\r\n }\r\n if (isExists) {\r\n isExists.innerText = JSON.stringify(data.schema);\r\n } else {\r\n const script = this.document.createElement('script');\r\n script.type = 'application/ld+json';\r\n script.id = `ng_metas_page_json_ld`;\r\n script.innerText = JSON.stringify(data.schema);\r\n this.document.head.appendChild(script);\r\n }\r\n return true;\r\n } catch (e) {\r\n return false;\r\n }\r\n }\r\n\r\n initFromCtrl() {\r\n this.router.events\r\n .pipe(\r\n filter((event) => event instanceof NavigationEnd),\r\n map(() => this.activatedRoute),\r\n map((route) => route.firstChild),\r\n switchMap((route) => {\r\n return of({\r\n params: route?.snapshot.params,\r\n queryParams: route?.snapshot.queryParams,\r\n data: route?.snapshot.data,\r\n url: new URL(this.document.URL).toString(),\r\n });\r\n })\r\n )\r\n .subscribe({\r\n next: async (response) => {\r\n const metas = await this.getMetas(response);\r\n this.setMetaData(metas);\r\n },\r\n });\r\n }\r\n}\r\n","import { DOCUMENT } from '@angular/common';\r\nimport { inject } from '@angular/core';\r\nimport { ResolveFn } from '@angular/router';\r\nimport { AngularMetaCtrl } from '../service/angular-meta.service';\r\n\r\nexport const angularMetaResolver: ResolveFn<boolean> = async (route, state) => {\r\n const document = inject(DOCUMENT);\r\n const metaCtrl = inject(AngularMetaCtrl);\r\n const params = route.params;\r\n const queryParams = route.queryParams;\r\n const data = route.data;\r\n const url = new URL(document.URL).toString();\r\n const metaData = await metaCtrl.getMetas({ params, queryParams, data, url });\r\n return await metaCtrl.setMetaData(metaData);\r\n};\r\n","/*\r\n * Public API Surface of ng-metas\r\n */\r\nexport { provideAngularMeta } from './config';\r\nexport { angularMetaResolver } from './resolver/angular-meta.resolver';\r\nexport { AngularMetaCtrl } from './service/angular-meta.service';\r\n","/**\n * Generated bundle index. 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