小编Dan*_*iel的帖子

我在 Angular 8 中开始了一个新项目，当执行ng build两次 angular 编译时，我想知道为什么

包-json：

{
  "name": "portability",
  "version": "0.0.0",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "test": "ng test",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^8.1.0",
    "@angular/cdk": "^8.0.2",
    "@angular/cli": "^8.1.0",
    "@angular/common": "~8.1.0",
    "@angular/compiler": "~8.1.0",
    "@angular/core": "~8.1.0",
    "@angular/flex-layout": "^8.0.0-beta.26",
    "@angular/forms": "~8.1.0",
    "@angular/material": "^8.0.2",
    "@angular/platform-browser": "~8.1.0",
    "@angular/platform-browser-dynamic": "~8.1.0",
    "@angular/router": "~8.1.0",
    "@ngx-translate/core": "^11.0.1",
    "core-js": "^2.5.4",
    "hammerjs": "^2.0.8",
    "rxjs": "~6.5.2",
    "tslib": "^1.9.0",
    "zone.js": "~0.9.1"
  },
  "devDependencies": {
    "@angular-devkit/build-angular": "~0.801.0", …