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Angular 8 HMR
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npm install --save-dev @angularclass/hmr |
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export const environment = { | |
production: false, | |
hmr: true | |
}; |
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import { NgModuleRef, ApplicationRef } from '@angular/core'; | |
import { createNewHosts } from '@angularclass/hmr'; | |
export const hmrBootstrap = ( | |
module: any, | |
bootstrap: () => Promise<NgModuleRef<any>> | |
) => { | |
let ngModule: NgModuleRef<any>; | |
module.hot.accept(); | |
bootstrap().then(mod => { | |
if (mod) { | |
ngModule = mod; | |
} | |
}); | |
module.hot.dispose(() => { | |
const appRef: ApplicationRef = ngModule.injector.get(ApplicationRef); | |
const elements = appRef.components.map(c => c.location.nativeElement); | |
const makeVisible = createNewHosts(elements); | |
ngModule.destroy(); | |
makeVisible(); | |
}); | |
}; |
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import { enableProdMode } from '@angular/core'; | |
import { platformBrowserDynamic } from '@angular/platform-browser-dynamic'; | |
import { AppModule } from './app/app.module'; | |
import { environment } from './environments/environment'; | |
import { hmrBootstrap } from './hmr'; | |
if (environment.production) { | |
enableProdMode(); | |
} | |
const bootstrap = () => platformBrowserDynamic().bootstrapModule(AppModule); | |
if (environment.hmr) { | |
if ((module as any).hot) { | |
hmrBootstrap(module, bootstrap); | |
} else { | |
console.error('HMR is not enabled for webpack-dev-server!'); | |
console.log('Are you using the --hmr flag for ng serve?'); | |
} | |
} else { | |
bootstrap().catch(err => console.log(err)); | |
} |
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"scripts": { | |
"start": "ng serve --hmr", | |
... | |
} |
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{ | |
"extends": "../tsconfig.json", | |
"compilerOptions": { | |
"outDir": "../out-tsc/app", | |
"types": ["node"] | |
}, | |
"exclude": ["src/test.ts", "**/*.spec.ts"] | |
} |
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