ng build --prod 没有生成 vendor.bundle.js

Question

我正在使用节点版本 8.9.4， npm 版本 5.6.0 我不知道为什么会这样 ng build --dev 正在生成 vendor.bundle.js 而 ng build --prod 未生成 vendor.bundle.js 这是屏幕截图

使用 ng build--prod 输出 [
[使用 ng-build --dev 输出]

这是我的 package.json

`{
  "name": "app1",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build --prod",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular-devkit/core": "0.0.28",
    "@angular/animations": "^5.0.0",
    "@angular/common": "^5.0.0",
    "@angular/compiler": "^5.0.0",
    "@angular/core": "^5.0.0",
    "@angular/forms": "^5.0.0",
    "@angular/http": "^5.0.0",
    "@angular/platform-browser": "^5.0.0",
    "@angular/platform-browser-dynamic": "^5.0.0",
    "@angular/router": "^5.0.0",
    "core-js": "^2.4.1",
    "rxjs": "^5.5.2",
    "zone.js": "^0.8.14"
  },
  "devDependencies": {
    "@angular/cli": "1.6.3",
    "@angular/compiler-cli": "^5.0.0",
    "@angular/language-service": "^5.0.0",
    "@types/jasmine": "~2.5.53",
    "@types/jasminewd2": "~2.0.2",
    "@types/node": "~6.0.60",
    "codelyzer": "^4.0.1",
    "jasmine-core": "~2.6.2",
    "jasmine-spec-reporter": "~4.1.0",
    "karma": "~1.7.0",
    "karma-chrome-launcher": "~2.1.1",
    "karma-cli": "~1.0.1",
    "karma-coverage-istanbul-reporter": "^1.2.1",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.1.2",
    "ts-node": "~3.2.0",
    "tslint": "~5.7.0",
    "typescript": "~2.4.2"
  }
}

`

Answer 1

对于产品构建，供应商捆绑包集成在您的主捆绑包中，因为它默认使用构建优化器。

根据 angular-cli documentation:

Total bundle sizes with Build Optimizer are smaller if there is no separate vendor chunk because having vendor code in the same chunk as app code makes it possible for Uglify to remove more unused code.

Answer 2

ng build 默认不生成 vendor-chunk，而是合并到一个 main-chunk 中以达到性能和优化的目的，您需要像这样向 build 命令添加一个参数，以便让您的供应商块分隔：
ng build --prod --vendor-chunk=true

在此处查看详细信息：

https://github.com/angular/angular-cli/wiki/build#--build-optimizer-and---vendor-chunk

ng build --prod 没有生成 vendor.bundle.js

ng build --prod is not generating vendor.bundle.js

angular

ng-build