feat: modernise fast svg library by using inject, standalone and provide function

Author: eneajaho

packages/ngx-fast-icon-demo/src/app/app.module.ts

@@ -7,7 +7,7 @@ import { DescriptionComponent } from './routes/description/description.component
 import { CommonModule } from '@angular/common';
 import { IonicModule } from '@ionic/angular';
 import { TransferHttpCacheModule } from '@nguniversal/common';
-import { FastSvgModule } from '@push-based/ngx-fast-svg';
+import { provideFastSVG } from '@push-based/ngx-fast-svg';
 
 @NgModule({
   declarations: [AppComponent],
@@ -16,9 +16,9 @@ import { FastSvgModule } from '@push-based/ngx-fast-svg';
     BrowserModule.withServerTransition({ appId: 'ngx-fast-icon-demo' }),
     HttpClientModule,
     TransferHttpCacheModule,
-    FastSvgModule.forRoot({
-      url: (name: string) => `assets/svg-icons/${name}.svg`,
-    }),
+    // FastSvgModule.forRoot({
+    //   url: (name: string) => `assets/svg-icons/${name}.svg`,
+    // }),
     IonicModule.forRoot(),
     RouterModule.forRoot(
       [
@@ -93,7 +93,11 @@ import { FastSvgModule } from '@push-based/ngx-fast-svg';
       { initialNavigation: 'enabledBlocking' }
     ),
   ],
-  providers: [],
+  providers: [
+    provideFastSVG({
+      url: (name: string) => `assets/svg-icons/${name}.svg`,
+    }),
+  ],
   bootstrap: [AppComponent],
 })
 export class AppModule {}

packages/ngx-fast-icon-demo/src/app/comparison/fast-icon/fast-icon.module.ts

@@ -1,7 +1,7 @@
 import { CommonModule } from '@angular/common';
 import { NgModule } from '@angular/core';
 import { RouterModule } from '@angular/router';
-import { FastSvgModule } from '@push-based/ngx-fast-svg';
+import { FastSvgComponent } from '@push-based/ngx-fast-svg';
 import { FastIconRouteComponent } from './fast-icon.component';
 
 @NgModule({
@@ -14,7 +14,7 @@ import { FastIconRouteComponent } from './fast-icon.component';
       },
     ]),
     CommonModule,
-    FastSvgModule,
+    FastSvgComponent,
   ],
 })
 export class FastIconRouteModule {}

packages/ngx-fast-lib/src/index.ts

@@ -9,3 +9,5 @@ export * from './lib/svg-registry.service';
 export * from './lib/fast-svg.component';
 // module
 export * from './lib/fast-svg.module';
+// provider
+export * from './lib/fast-svg.provider';

packages/ngx-fast-lib/src/lib/fast-svg.component.ts

@@ -5,11 +5,11 @@ import {
   ChangeDetectionStrategy,
   Component,
   ElementRef,
-  Inject,
   Input,
   OnDestroy,
   PLATFORM_ID,
-  Renderer2
+  Renderer2,
+  inject,
 } from '@angular/core';
 import { Subscription } from 'rxjs';
 import { getZoneUnPatchedApi } from './internal/get-zone-unpatched-api';
@@ -91,38 +91,34 @@ function createGetImgFn(renderer: Renderer2): (src: string) => HTMLElement {
       }
     `,
   ],
+  standalone: true,
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class FastSvgComponent implements AfterViewInit, OnDestroy {
+  private readonly platform = inject(PLATFORM_ID);
+  private readonly renderer = inject(Renderer2);
+  private readonly registry = inject(SvgRegistry);
+  private readonly element = inject<ElementRef<HTMLElement>>(ElementRef);
+
   private readonly sub = new Subscription();
   private readonly getImg = createGetImgFn(this.renderer);
 
-  @Input()
-  name = '';
-  @Input()
-  size: string = this.registry.defaultSize;
-  @Input()
-  width = '';
-  @Input()
-  height = '';
+  @Input() name = '';
+  @Input() size: string = this.registry.defaultSize;
+  @Input() width = '';
+  @Input() height = '';
+
   // When the browser loaded the svg resource we trigger the caching mechanism
   // re-fetch -> cache-hit -> get SVG -> cache in DOM
   loadedListener = () => {
     this.registry.fetchSvg(this.name);
   };
 
-  constructor(
-    @Inject(PLATFORM_ID)
-    private platform: Record<string, unknown>,
-    private renderer: Renderer2,
-    private registry: SvgRegistry,
-    private element: ElementRef<HTMLElement>
-  ) {}
-
   ngAfterViewInit() {
     if (!this.name) {
       throw new Error('svg component needs a name to operate');
     }
+
     // Setup view refs and init them
     const elem = this.element.nativeElement;
 

packages/ngx-fast-lib/src/lib/fast-svg.module.ts

@@ -1,42 +1,19 @@
 import { ModuleWithProviders, NgModule } from '@angular/core';
 import { FastSvgComponent } from './fast-svg.component';
-import { SvgRegistry } from './svg-registry.service';
-import { CommonModule } from '@angular/common';
 import { FastSvgProviderOptions } from './provider-config.interface';
-import { SvgLoadStrategyImpl } from './token/svg-load.strategy';
-import { SvgLoadStrategy } from './token/svg-load.strategy.model';
-import { SvgOptionsToken } from './token/svg-options.token';
-import { SvgOptions } from './token/svg-options.model';
+import { provideFastSVG } from './fast-svg.provider';
 
 @NgModule({
-  imports: [CommonModule],
-  declarations: [FastSvgComponent],
+  imports: [FastSvgComponent],
   exports: [FastSvgComponent],
 })
 export class FastSvgModule {
   static forRoot(
-    providers: FastSvgProviderOptions
+    options: FastSvgProviderOptions
   ): ModuleWithProviders<FastSvgModule> {
-    const svgOptions: SvgOptions = {
-      url: providers.url,
-    };
-    providers?.suspenseSvgString &&
-      (svgOptions.suspenseSvgString = providers.suspenseSvgString);
-    providers?.defaultSize && (svgOptions.defaultSize = providers.defaultSize);
-
     return {
       ngModule: FastSvgModule,
-      providers: [
-        {
-          provide: SvgLoadStrategy,
-          useClass: providers.svgLoadStrategy || SvgLoadStrategyImpl,
-        },
-        {
-          provide: SvgOptionsToken,
-          useValue: svgOptions,
-        },
-        SvgRegistry,
-      ],
+      providers: [provideFastSVG(options)],
     };
   }
 

packages/ngx-fast-lib/src/lib/fast-svg.provider.ts

@@ -0,0 +1,46 @@
+import { Provider, makeEnvironmentProviders } from '@angular/core';
+import {
+  SvgLoadStrategy,
+  SvgLoadStrategyImpl,
+  SvgOptions,
+  SvgOptionsToken,
+  SvgRegistry,
+} from '..';
+import { FastSvgProviderOptions } from './provider-config.interface';
+
+/**
+ * @description
+ * Use this function to register the FastSvg providers in your application.
+ *
+ * @param options {FastSvgProviderOptions} - The options for the FastSvg providers.
+ * @return {EnvironmentProviders} - The providers for the FastSvg module.
+ *
+ * @example
+ *
+ * ```ts
+ * bootstrapApplication(AppComponent, {
+ *  providers: [
+ *   provideFastSVG({
+ *     url: (name: string) => `path/to/svg-assets/${name}.svg`,
+ *   })
+ * ]});
+ * ```
+ */
+export const provideFastSVG = (options: FastSvgProviderOptions) => {
+  const svgOptions: SvgOptions = {
+    url: options.url,
+    suspenseSvgString: options.suspenseSvgString || undefined,
+    defaultSize: options.defaultSize || undefined,
+  };
+
+  const providers: Provider[] = [
+    SvgRegistry,
+    {
+      provide: SvgLoadStrategy,
+      useClass: options.svgLoadStrategy || SvgLoadStrategyImpl,
+    },
+    { provide: SvgOptionsToken, useValue: svgOptions },
+  ];
+
+  return makeEnvironmentProviders(providers);
+};