Missing Script when I run npm start to create React app

问题

I'm trying to run the React server by running npm start

When I do this I get a missing script error:

λ 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

Full error log:

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     at C:\Program Files\nodejs\node_modules\npm\lib\run-script.js:63:5
4 verbose stack     at C:\Program Files\nodejs\node_modules\npm\node_modules\read-package-json\read-json.js:115:5
4 verbose stack     at C:\Program Files\nodejs\node_modules\npm\node_modules\read-package-json\read-json.js:418:5
4 verbose stack     at checkBinReferences_ (C:\Program Files\nodejs\node_modules\npm\node_modules\read-package-json\read-json.js:373:45)
4 verbose stack     at final (C:\Program Files\nodejs\node_modules\npm\node_modules\read-package-json\read-json.js:416:3)
4 verbose stack     at then (C:\Program Files\nodejs\node_modules\npm\node_modules\read-package-json\read-json.js:160:5)
4 verbose stack     at ReadFileContext.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\read-package-json\read-json.js:332:20)
4 verbose stack     at ReadFileContext.callback (C:\Program Files\nodejs\node_modules\npm\node_modules\graceful-fs\graceful-fs.js:78:16)
4 verbose stack     at FSReqCallback.readFileAfterOpen [as oncomplete] (fs.js:242:13)
5 verbose cwd C:\Users\Aristophanes\eth-todo-list-react
6 verbose Windows_NT 10.0.17134
7 verbose argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "start"
8 verbose node v11.1.0
9 verbose npm  v6.4.1
10 error missing script: start

回答1:

Update create-react-app package to solve this problem.

For updating the concerned package run the following command:npm install -g create-react-app

回答2:

Check the names of the scripts in the package.json file, they may be called something different to start. e.g. this part:

"scripts": {
  "build": "cd packages/react-scripts && node bin/react-scripts.js build",
  "start": "cd packages/react-scripts && node bin/react-scripts.js start",
},

Also, try printing your working directory using pwd and check to see if the current directory is correct and run npm run start again.

回答3:

Installing create-react-app globally is now discouraged. Instead uninstall globally installed create-react-app package by doing: npm uninstall -g create-react-app (you may have to manually delete package folder if this command didn't work for you. Some users have reported they had to delete folders manually)

Then you can run npx create-react-app my-app to create react app again.

ref: https://github.com/facebook/create-react-app/issues/8086

回答4:

Just in case. From the docs:

If you've previously installed create-react-app globally via npm install -g create-react-app, we recommend you uninstall the package using npm uninstall -g create-react-app to ensure that npx always uses the latest version.

来源：https://stackoverflow.com/questions/56148511/missing-script-when-i-run-npm-start-to-create-react-app

标签

node.js

reactjs

npm

create-react-app

npm-start