标签: npm-start

我正在尝试学习反应,所以我有这个示例代码为fullstack反应投票应用程序,我试图让它工作,但在运行npm install后跟npm start我收到以下错误:

npm ERR! Darwin 16.4.0
npm ERR! argv "/usr/local/bin/node" "/usr/local/bin/npm" "run" "server"
npm ERR! node v7.5.0
npm ERR! npm  v4.3.0
npm ERR! file sh
npm ERR! code ELIFECYCLE
npm ERR! errno ENOENT
npm ERR! syscall spawn
npm ERR! voting_app@1.1.0 server: `live-server --public --    
host=localhost --port=3000 --middleware=./disable-browser-cache.js`
npm ERR! spawn ENOENT
npm ERR!
npm ERR! Failed at the voting_app@1.1.0 server script 'live-server --
public --host=localhost --port=3000 --middleware=./disable-browser- 
cache.js'.
npm ERR! Make sure you have the latest version of node.js …

是yarn run意在相当于npm start？

我正在使用creat-react-native-app构建一个简单的React Native应用程序,仅使用react-navigation和base-64(base 64编码/解码)作为依赖项.随着时间的推移,应用程序变得越来越慢,现在有时候在运行NPM启动后,"正在启动打包程序......"会卡住(等待大约30分钟).

我尝试用"npm start - --reset-cache"启动它,但没有任何改变

一旦启动并运行,我就不会在DevTools或终端中收到任何错误或警告.此外,应用程序的性能也没有问题

我能做些什么才能让NPM像以前一样平稳快速地开始？我可以采取任何一般步骤来解决此问题吗？

这是我的package.json

{
  "name": "test",
  "version": "0.1.0",
  "private": true,
  "devDependencies": {
    "jest-expo": "~27.0.0",
    "react-devtools": "^3.2.3",
    "react-native-scripts": "1.14.0",
    "react-test-renderer": "16.3.1"
  },
  "main": "./node_modules/react-native-scripts/build/bin/crna-entry.js",
  "scripts": {
    "start": "react-native-scripts start",
    "eject": "react-native-scripts eject",
    "android": "react-native-scripts android",
    "ios": "react-native-scripts ios",
    "test": "jest"
  },
  "jest": {
    "preset": "jest-expo"
  },
  "dependencies": {
    "base-64": "^0.1.0",
    "expo": "^27.0.1",
    "react": "16.3.1",
    "react-native": "~0.55.2",
    "react-navigation": "^2.11.2"
  }
}

我正在尝试在Windows 10in上编译一个项目Visual Studio Code，我的设置如下：

1)npm版本6.12

2）Node.js版本12.13

3) Angular CLI: 8.3.19

我的问题是，当我尝试运行ng serve我收到以下输入：ng : File C:\Users\name\AppData\Roaming\npm\ng.ps1 cannot be loaded because running scripts is disabled on this system。其次是For more information, see about_Execution_Policies at https:/go.microsoft.com/fwlink/?LinkID=135170.

到目前为止我尝试过的

1）我访问了网站，发现Set-ExecutionPolicy -ExecutionPolicy RemoteSigned应该是我必须在shell中输入的命令。因此，我所做的是：

PS C:\Users\raggi\OneDrive\Desktop\pitalkdashboard> Set-ExecutionPolicy -ExecutionPolicy RemoteSigned

但这导致了以下错误：

Set-ExecutionPolicy : Access to the registry key HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\PowerShell\1\ShellIds\Microsoft.PowerShell is denied. To change the execution policy for the default (LocalMachine) scope, …

我的项目运行正常，但是安装了react-redux和redux之后，我无法启动项目，它向我显示此错误

编译失败。

webpack不是功能

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! project@0.1.0 start: `node scripts/start.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the project@0.1.0 start script.

npm ERR！npm可能不是问题。上面可能还有其他日志记录输出。

错误的屏幕截图

我正在尝试通过运行来运行 React 服务器 npm start

当我这样做时，我得到一个丢失的脚本错误：

? npm start
npm ERR! missing script: start

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Aristophanes\AppData\Roaming\npm-cache\_logs\2019-05-15T11_34_47_404Z-debug.log

完整的错误日志：

0 info it worked if it ends with ok
1 verbose cli [ 'C:\\Program Files\\nodejs\\node.exe',
1 verbose cli   'C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli   'start' ]
2 info using npm@6.4.1
3 info using node@v11.1.0
4 verbose stack Error: missing script: start
4 verbose stack     at run (C:\Program Files\nodejs\node_modules\npm\lib\run-script.js:155:19)
4 verbose stack …

我一直在试图弄清楚如何编写一个npm script最终会在用户浏览器中启动的应用程序,而无需手动打开浏览器并转到localhost:1234.

现在我的脚本读作:

"start": "npm run build && npm run dev",
"build": "npm run clean && npm run mkdir && npm run build:html && npm run build:css && npm run build:js",
"dev": "webpack-dev-server --inline --hot --content-base build --history-api-fallback",

想要添加 "open": <some code here>,

因此,当有人去GitHub并克隆或分离我的存储库时,他们会获得有关如何运行应用程序的说明.我只是认为自动化这将是一个很好的小补充.

有人知道这是怎么回事吗？我很确定它并且认为它与在bash中调用命令有关.在此先感谢您的帮助!

我正在尝试在本地运行 React 应用程序。

运行时npm run dev出现错误

 vite v2.6.14 dev server running at:

  > Local: http://localhost:3000/
  > Network: use `--host` to expose

  ready in 182ms.

/Users/markoz/Work/Razvoj/Graphs/kenstack-designer/kenstack-designer/node_modules/vite/dist/node/chunks/dep-e0fe87f8.js:56882
        let url = decodeURI(removeTimestampQuery(req.url)).replace(NULL_BYTE_PLACEHOLDER, '\0');
                  ^

URIError: URI malformed
    at decodeURI (<anonymous>)
    at viteTransformMiddleware (/Users/markoz/Work/Razvoj/Graphs/kenstack-designer/kenstack-designer/node_modules/vite/dist/node/chunks/dep-e0fe87f8.js:56882:19)
    at call (/Users/markoz/Work/Razvoj/Graphs/kenstack-designer/kenstack-designer/node_modules/vite/dist/node/chunks/dep-e0fe87f8.js:45568:7)
    at next (/Users/markoz/Work/Razvoj/Graphs/kenstack-designer/kenstack-designer/node_modules/vite/dist/node/chunks/dep-e0fe87f8.js:45512:5)
    at /Users/markoz/Work/Razvoj/Graphs/kenstack-designer/kenstack-designer/node_modules/vite/dist/node/chunks/dep-e0fe87f8.js:56525:28
    at viteServePublicMiddleware (/Users/markoz/Work/Razvoj/Graphs/kenstack-designer/kenstack-designer/node_modules/vite/dist/node/chunks/dep-e0fe87f8.js:56564:9)
    at call (/Users/markoz/Work/Razvoj/Graphs/kenstack-designer/kenstack-designer/node_modules/vite/dist/node/chunks/dep-e0fe87f8.js:45568:7)
    at next (/Users/markoz/Work/Razvoj/Graphs/kenstack-designer/kenstack-designer/node_modules/vite/dist/node/chunks/dep-e0fe87f8.js:45512:5)
    at next (/Users/markoz/Work/Razvoj/Graphs/kenstack-designer/kenstack-designer/node_modules/vite/dist/node/chunks/dep-e0fe87f8.js:45490:14)
    at next (/Users/markoz/Work/Razvoj/Graphs/kenstack-designer/kenstack-designer/node_modules/vite/dist/node/chunks/dep-e0fe87f8.js:45490:14)

Node.js v17.4.0

我的系统文件夹中没有.npmrc，但项目中有一个。

我该如何解决这个问题？

我在本地项目中使用 npm，我想知道每次启动会话时是否都必须使用 npm init ？我认为答案是肯定的。

例如，如果我重新启动计算机，我是否必须执行 npm init ？我每次都必须执行 npm install 和 npm start 吗？

谢谢

考虑app.js

const { doCoolStuff } = require("./api/myApi");
// grab param from command line into "myParam"


doCoolStuff(myParam);

... // more code 

和Package.json：

{
  "name": "-------",
  "version": "1.0.0",
  "description": "",
  "main": "app.js",
  "scripts": {
    "send": "node app.js"
  },
  
  ... 
}

app.js运行时如何传递参数npm run send？

就像是npm run send myEmail@myDomain.com