How to fix npm ERR! code ERESOLVE npm ERR! ERESOLVE unable to resolve dependency tree npm ERR! peer dep missing in npm | DevErrors

How to fix "npm ERR! code ERESOLVE npm ERR! ERESOLVE unable to resolve dependency tree npm ERR! peer dep missing"

1Inspect the conflict tree

npm prints the conflicting packages. Read the requested vs installed versions to identify which pair is incompatible.

2Align versions to satisfy peers

Pick compatible versions (upgrade/downgrade both). Example for React:

bash

npm install react@17 react-dom@17
# or upgrade plugin to support React 18
npm install some-plugin@latest

3Clean and reinstall

After adjusting versions, reinstall to refresh the lockfile:

bash

rm -rf node_modules package-lock.json
npm install

4Use overrides only when you accept the risk

If you must force a version, add an override in package.json:

json

{
  "overrides": {
    "some-plugin/react": "18.0.0"
  }
}

Re-run npm install. Test carefully because forced peers may break runtime.

How to fix npm ERR! code ERESOLVE npm ERR! ERESOLVE unable to resolve dependency tree npm ERR! peer dep missing in npm