How to remove warning by npm?

Question

When I run npm install, I get the following error:

npm WARN [email protected] requires a peer of eslint-plugin-jsx-a11y@^5.1.1 but none is installed. You must install peer dependencies yourself.

Here is what my package.json looks like:

{
  "name": "name",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "ajv": "^6.5.0",
    "aws-amplify": "^0.4.0",
    "react": "^16.3.2",
    "react-bootstrap": "^0.32.1",
    "react-dom": "^16.3.2",
    "react-router-bootstrap": "^0.24.4",
    "react-router-dom": "^4.2.2",
    "react-scripts": "1.1.4"
  },
  "scripts": {
    "start": "react-scripts start",
    "build": "react-scripts build",
    "test": "react-scripts test --env=jsdom",
    "eject": "react-scripts eject"
  },
  "devDependencies": {
    "eslint-config-airbnb": "^16.1.0",
    "eslint-plugin-import": "^2.11.0",
    "eslint-plugin-jsx-a11y": "^6.0.3",
    "eslint-plugin-react": "^7.8.2"
  }
}

Does anyone know how to remove this error?

Downgrade that plugin to the 5.x its peer requires, or ignore the warning. — jonrsharpe
– jonrsharpe, Commented May 17, 2018 at 7:04
If I downgrade eslint-plugin-jsx-a11y, then I get the following error: npm WARN [email protected] requires a peer of eslint-plugin-jsx-a11y@^6.0.2 but none is installed. You must install peer dependencies yourself. Ignoring this warning is not an option. — Ralph David Abernathy
– Ralph David Abernathy, Commented May 17, 2018 at 7:19
Then downgrade that plugin until it's happy with the other one. Continue until no warnings, or until you get bored. — jonrsharpe
– jonrsharpe, Commented May 17, 2018 at 7:20

jonrsharpe · Accepted Answer · 2018-05-17 07:24:05Z

2

This is not an error, it is a WARNing

The easiest trial is delete node_modules directory and retype to see if it persists
```
npm install
```
Moreover you can use npm-install-peers to find and install required peer dependencies
```
npm install -g npm-install-peers
npm-install-peers
```
Also you can change the log level to error so that you won't see the warnings

edited May 17, 2018 at 7:24

jonrsharpe

123k31 gold badges277 silver badges488 bronze badges

answered May 17, 2018 at 7:22

Josem

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