Angular6 热加载配置方案，分享给大家，具体如下：

示例 ng 版本如下 ：

$ ng --version _ _ ____ _ ___ / \ _ __ __ _ _ _| | __ _ _ __ / ___| | |_ _| / △ \ | '_ \ / _` | | | | |/ _` | '__| | | | | | | / ___ \| | | | (_| | |_| | | (_| | | | |___| |___ | | /_/ \_\_| |_|\__, |\__,_|_|\__,_|_| \____|_____|___| |___/Angular CLI: 6.0.8Node: 8.11.1OS: win32 x64Angular: 6.1.3... animations, common, compiler, compiler-cli, core, forms... http, language-service, platform-browser... platform-browser-dynamic, routerPackage Version-----------------------------------------------------------@angular-devkit/architect 0.6.8@angular-devkit/build-angular 0.6.8@angular-devkit/build-optimizer 0.6.8@angular-devkit/core 0.6.8@angular-devkit/schematics 0.6.8@angular/cli 6.0.8@ngtools/webpack 6.0.8@schematics/angular 0.6.8@schematics/update 0.6.8rxjs 6.2.2typescript 2.7.2webpack 4.8.3

安装 hmr 依赖包

npm install --save-dev @angularclass/hmr --registry https://registry.npm.taobao.org

配置 hmr 文件

在 src/environments 目录下添加 environment.hmr.ts 配置文件

文件内容如下 ：

export const environment = { production: false, hmr: true};

然后分别在 environment.prod.ts 和 environment.ts 添加 hmr:false 配置项

配置 src/tsconfig.app.json 文件

"compilerOptions": { ... "types": ["node"]}

如果不配置上面的 "types":["node"], 则会报错

ERROR in src/main.ts(16,7): error TS2304: Cannot find name 'module'.
src/main.ts(17,18): error TS2304: Cannot find name 'module'.

配置 src/hmr.ts 文件内容如下

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 => (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(); });};

更新 src/main.ts 文件内容如下

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["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));}

配置 angular.json 文件

..."build": { "builder": "@angular-devkit/build-angular:browser", "options": { "outputPath": "dist/ng6", "index": "src/index.html", "main": "src/main.ts", "polyfills": "src/polyfills.ts", "tsConfig": "src/tsconfig.app.json", "assets": ["src/favicon.ico", "src/assets"], "styles": ["src/styles.css"], "scripts": [] }, "configurations": { "hmr": { "fileReplacements": [ { "replace": "src/environments/environment.ts", "with": "src/environments/environment.hmr.ts" } ] }, "production": { "fileReplacements": [ { "replace": "src/environments/environment.ts", "with": "src/environments/environment.prod.ts" } ], "optimization": true, "outputHashing": "all", "sourceMap": false, "extractCss": true, "namedChunks": false, "aot": true, "extractLicenses": true, "vendorChunk": false, "buildOptimizer": true } }},..."serve": { "builder": "@angular-devkit/build-angular:dev-server", "options": { "browserTarget": "ng6:build" }, "configurations": { "production": { "browserTarget": "ng6:build:production" }, "hmr": { "browserTarget": "ng6:build:hmr", "hmr": true } }},

启动应用

• 方式一：ng serve --configuration hmr
• 方式二：ng run ng6:serve:hmr

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。