javascript - Angular : ng build fails but npm run build works fine

Question

在我的 Angular 5 应用程序中，我有 angular-cli 1.6.8

{
  "name": "test",
  "version": "0.0.0",
  "license": "MIT",
  "scripts": {
    "ng": "ng",
    "start": "ng serve",
    "build": "ng build",
    "karma": "ng test",
    "test": "jest",
    "test:watch": "jest --watch",
    "test:ci": "jest --runInBand",
    "lint": "ng lint",
    "e2e": "ng e2e"
  },
  "private": true,
  "dependencies": {
    "@angular/animations": "^5.2.7",
    "@angular/common": "^5.2.7",
    "@angular/compiler": "^5.2.7",
    "@angular/core": "^5.2.7",
    "@angular/forms": "^5.2.7",
    "@angular/http": "^5.2.7",
    "@angular/platform-browser": "^5.2.7",
    "@angular/platform-browser-dynamic": "^5.2.7",
    "@angular/platform-server": "^5.2.7",
    "@angular/router": "^5.2.7",
    "bootstrap": "^3.3.7",
    "core-js": "^2.4.1",
    "font-awesome": "^4.7.0",
    "hammerjs": "^2.0.8",
    "lodash": "^4.12.0",
    "moment": "^2.18.1",
    "npm": "^5.2.0",
    "proxy-polyfill": "^0.1.7",
    "rxjs": "^5.5.6",
    "sha1": "^1.1.1",
    "smoothscroll-polyfill": "^0.3.5",
    "web-animations-js": "^2.2.5",
    "zone.js": "^0.8.8"
  },
  "devDependencies": {
    "@angular/cli": "1.6.8",
    "@angular/compiler-cli": "^5.2.7",
    "@types/jasmine": "2.5.38",
    "@types/jest": "^20.0.5",
    "@types/node": "~6.0.60",
    "codelyzer": "~2.0.0",
    "jasmine-core": "~2.5.2",
    "jasmine-spec-reporter": "~3.2.0",
    "jest": "^20.0.4",
    "karma": "~1.4.1",
    "karma-chrome-launcher": "~2.0.0",
    "karma-cli": "~1.0.1",
    "karma-coverage-istanbul-reporter": "^0.2.0",
    "karma-jasmine": "~1.1.0",
    "karma-jasmine-html-reporter": "^0.2.2",
    "protractor": "~5.1.0",
    "ts-jest": "^20.0.7",
    "ts-node": "~2.0.0",
    "tslint": "~4.5.0",
    "typescript": "2.6.2"
  },
}

在我的应用程序文件夹中运行 ng --version 或 ng build 时，它没有提示:bash: ng: command not found -> 相反运行 npm run build 正常运行

我在全局安装了 node 8.0.0 和 npm 4.2.2，但我没有在全局安装 angular-cli，我不'想安装它。因此我认为我可以在我的应用程序中(本地)使用 ng 命令，不是吗？

如果不是，我怎么能不通过 npm install -g @angular/cli 全局安装它呢 (因为我不允许运行全局 npm install 操作)

建议？

Answer 1

如果你想使用 ng 命令以及其他命令，你需要全局安装它们。您无法运行本地命令，因为 NodeJS 找不到它们。