我在安装npm时遇到了一些问题。
npm install package-name工作正常，但是当我手动(通过 git 拉取(在package.json文件中添加新依赖项然后尝试仅npm install时，它会返回
up to date in 4.2 sec
并且不安装软件包。
仅供参考：我正在使用git来拉取package.json文件。因此，包名称中没有任何问题。当我拉动并尝试仅使用 npm install 安装它时，它不起作用。
我的包.json是：
{
"name": "ap",
"version": "0.0.0",
"license": "MIT",
"scripts": {
"ng": "ng",
"start": "ng serve",
"build": "ng build",
"test": "ng test",
"lint": "ng lint",
"e2e": "ng e2e"
},
"private": true,
"dependencies": {
"@angular/common": "^4.0.0",
"@angular/compiler": "^4.0.0",
"@angular/core": "^4.0.0",
"@angular/forms": "^4.0.0",
"@angular/http": "^4.0.0",
"@angular/platform-browser": "^4.0.0",
"@angular/platform-browser-dynamic": "^4.0.0",
"@angular/platform-server": "^4.1.3",
"@angular/router": "^4.0.0",
"@ng-bootstrap/ng-bootstrap": "^1.0.0-alpha.26",
"@ngx-translate/core": "^6.0.1",
"@ngx-translate/http-loader": "0.0.3",
"@types/underscore": "^1.8.0",
"angular-datatables": "^4.1.0",
"angular2-busy": "^2.0.4",
"angular2-jwt": "^0.2.3",
"angular2-toaster": "^4.0.0",
"chart.js": "^2.6.0",
"core-js": "^2.4.1",
"datatables.net": "^1.10.15",
"datatables.net-dt": "^1.10.15",
"jquery": "^3.2.1",
"ng2-charts": "^1.5.0",
"ng2-simple-timer": "^1.3.1",
"rxjs": "^5.1.0",
"underscore": "^1.8.3",
"zone.js": "^0.8.4"
},
"devDependencies": {
"@angular/animations": "^4.1.3",
"@angular/cli": "1.0.4",
"@angular/compiler-cli": "^4.0.0",
"@types/datatables.net": "^1.10.1",
"@types/jasmine": "2.5.38",
"@types/jquery": "^2.0.45",
"@types/node": "~6.0.60",
"codelyzer": "~2.0.0",
"jasmine-core": "~2.5.2",
"jasmine-spec-reporter": "~3.2.0",
"karma": "~1.4.1",
"karma-chrome-launcher": "~2.1.1",
"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-node": "~2.0.0",
"tslint": "~4.5.0",
"typescript": "~2.2.0"
}
}
正如@j7an所说，问题必须取决于环境。我遇到了同样的问题，我不知道我的NODE_ENV是如何投入生产的。无论如何，我这样做了：(如本答案中所述(
- 删除
package-lock.json - 删除
node_modules
然后：
npm install
npm install --only=dev
这必须解决问题。
当我
根据"Modern JavaScript"一书运行export NODE_ENV=production时，我遇到了这个问题。删除node_modules，package.json并清除npm缓存后，我从此stackoverflow条目中找到了答案：npm install不会安装devDependencies
为了解决这个问题，我运行了删除生产标志的export NODE_ENV=。一旦我这样做了，我就可以再次安装开发依赖项。希望这有帮助。