lint-staged is very slow when script is npm run xxx

Description

I found my lint-staged was very slow, so I debugged it and found when not use the npm run xxx commands it will be fine, it’s very strange, I want to know why.

Steps to reproduce

1. Use this config
   npm script:
   "lint-staged:js": "eslint --ext .js,.jsx,.ts,.tsx",
   lint-staged config:

"lint-staged": {
    "**/*.{js,jsx}": "npm run lint-staged:js"
  }

1. modify a file (just one) and git add .
2. npx lint-staged In my computer it will take more than 3 min for result! But if I replace commands to:

"lint-staged": {
   "**/*.{js,jsx}": "eslint --ext .js,.jsx,.ts,.tsx"
 }

it will be ok. That’s strange.

Debug Logs

expand to view

$ npx lint-staged -d > log
2019-10-21T08:20:48.219Z lint-staged:bin Running `lint-staged@9.4.2`
2019-10-21T08:20:48.224Z lint-staged Loading config using `cosmiconfig`
2019-10-21T08:20:48.241Z lint-staged Successfully loaded config from `D:\projects\osms-web\package.json`:
{ '**/*.{js,jsx}': 'npm run lint-staged:js' }
2019-10-21T08:20:48.242Z lint-staged:cfg Validating config
2019-10-21T08:20:48.256Z lint-staged:run Running all linter scripts
2019-10-21T08:20:48.257Z lint-staged:git Running git command [ 'rev-parse', '--show-toplevel' ]
2019-10-21T08:20:48.759Z lint-staged:run Resolved git directory to be `D:/Projects/osms-web`
2019-10-21T08:20:48.759Z lint-staged:git Running git command [ 'diff', '--staged', '--diff-filter=ACMR', '--name-only' ]
2019-10-21T08:20:49.408Z lint-staged:run Loaded list of staged files in git:
[ 'src/pages/WorkloadConfirmation/index.jsx' ]
2019-10-21T08:20:49.408Z lint-staged:gen-tasks Generating linter tasks
2019-10-21T08:20:49.432Z lint-staged:gen-tasks Generated task:
{ pattern: '**/*.{js,jsx}',
  commands: 'npm run lint-staged:js',
  fileList:
   [ 'D:/projects/osms-web/src/pages/WorkloadConfirmation/index.jsx' ] }
2019-10-21T08:20:49.444Z lint-staged:git Running git command [ 'status', '--porcelain' ]
2019-10-21T08:20:50.052Z lint-staged:make-cmd-tasks Creating listr tasks for commands 'npm run lint-staged:js'
2019-10-21T08:20:50.067Z lint-staged:task cmd: npm
2019-10-21T08:20:50.067Z lint-staged:task args: [ 'run',
  'lint-staged:js',
  'D:/projects/osms-web/src/pages/WorkloadConfirmation/index.jsx' ]
2019-10-21T08:20:50.068Z lint-staged:task execaOptions: { preferLocal: true, reject: false, shell: false }



× npm run lint-staged:js found some errors. Please fix them and try committing again.

> ant-design-pro@1.0.0 lint-staged:js D:\Projects\osms-web
> eslint --ext .js,.jsx,.ts,.tsx "D:/projects/osms-web/src/pages/WorkloadConfirmation/index.jsx"


D:\projects\osms-web\src\pages\WorkloadConfirmation\index.jsx
 6:36  error  'React' is not defined                   no-undef
27:7   error  'React' must be in scope when using JSX  react/react-in-jsx-scope
28:9   error  'React' must be in scope when using JSX  react/react-in-jsx-scope
29:31  error  'React' must be in scope when using JSX  react/react-in-jsx-scope
30:31  error  'React' must be in scope when using JSX  react/react-in-jsx-scope

✖ 5 problems (5 errors, 0 warnings)

npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! ant-design-pro@1.0.0 lint-staged:js: `eslint --ext .js,.jsx,.ts,.tsx "D:/projects/osms-web/src/pages/WorkloadConfirmation/index.jsx"`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the ant-design-pro@1.0.0 lint-staged:js script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     D:\Users\w13269464702\AppData\Roaming
pm-cache\_logs\2019-10-21T08_21_01_390Z-debug.log

Environment

• OS: win7 64bit
• Node.js: 10.13.0
• lint-staged: 9.4.2

[okonet]

The problem is that you provide ESLint with --ext option that runs it on the whole project. lint-staged passes staged files to it directly, so just remove everything from the command and leave it as eslint

[okonet]

Please provide the debug logs