eslint-config-react-native-strict

React Native's official ESLint config (@react-native/eslint-config) with every warn-level rule promoted to error - so your project's lint config is only ever error or off, never warn.

Why

A permanent warn is a deferred decision that rots into ignored noise:

• If a rule matters, it should be an error - Lint fails and requires a fix.
• If it doesn't, it should be off - explicitly, on purpose.

A warn is neither. Lint should return zero errors and zero warnings. This preset removes the middle option from React Native's defaults, leaving one decision per rule: error or off.

Install

yarn add -D eslint-config-react-native-strict

@react-native/eslint-config and eslint are peer dependencies - already present in React Native projects (>=0.72). This preset derives from whatever version of @react-native/eslint-config you have installed, so it tracks React Native upgrades automatically; there is no hand-maintained rule list.

Usage

In .eslintrc.js:

module.exports = {
  root: true,
  extends: ['react-native-strict'],
  rules: {
    // Deliberate, documented exceptions - turn rules OFF, never to warn:
    'react-native/no-inline-styles': 'off', // inline styles are fine here
    'no-bitwise': 'off', // bitwise ops are intentional
  },
};

How it works

The whole package is one pure function applied to the config you already have:

strictify(require('@react-native/eslint-config'));

It flips every warn to error - preserving each rule's options and recursing into overrides - and leaves off and error untouched. It is rule-agnostic by design: it changes only severity, never which rules exist. Deciding which rules belong in your project is your job - extend this preset for the severity policy, then turn off the ones you don't want.

Deprecated rules

Because the transform is pure, React Native's handful of deprecated ESLint rules (no-catch-shadow, no-negated-in-lhs, no-mixed-requires, no-new-require, no-path-concat, no-restricted-modules, handle-callback-err) are promoted to error too. Turn them off like other exceptions if you don't want them.

License

MIT