Configs

.eslintrc.js

module.exports = {
  env: {
    es2020: true,
    node: true,
  },
  parser: '@typescript-eslint/parser',
  parserOptions: {
    ecmaFeatures: {
      jsx: true,
    },
    ecmaVersion: 2020,
    sourceType: 'module',
  },
  settings: {
    'react': {
      version: '17',
    },
    'import/extensions': ['.js', '.ts', '.tsx'],
    'import/parsers': {
      '@typescript-eslint/parser': ['.ts', '.tsx'],
    },
    'import/resolver': {
      node: {
        extensions: ['.js', '.ts', '.tsx'],
      },
    },
  },
  ignorePatterns: ['**/lib/**'],
  extends: [
    'eslint-config-prettier',
    'eslint:recommended',
    'plugin:react/recommended',
    'plugin:@typescript-eslint/recommended',
    'plugin:react-native-a11y/all',
  ],
  plugins: [
    'babel',
    'eslint-comments',
    'import',
    'prettier',
    'react',
    'react-hooks',
    'react-native',
    'react-native-a11y',
    '@typescript-eslint/eslint-plugin',
  ],
  rules: {
    'react-hooks/rules-of-hooks': 'error', // Checks rules of Hooks
    'react-hooks/exhaustive-deps': 'warn', // Checks effect dependencies
    'linebreak-style': ['error', 'unix'],
    'prettier/prettier': [
      'error',
      {
        quoteProps: 'consistent',
        singleQuote: true,
        tabWidth: 2,
        trailingComma: 'es5',
        bracketSpacing: false,
        jsxBracketSameLine: true,
        arrowParens: 'always',
      },
    ],
  },
};

.husky-pre-commit

#!/bin/sh
. "$(dirname "$0")/_/husky.sh"

yarn lint && yarn typescript && yarn test

package.json

  "devDependencies": {
    "@babel/core": "^7.14.3",
    "@babel/eslint-parser": "^7.14.4",
    "@typescript-eslint/eslint-plugin": "^4.26.0",
    "@typescript-eslint/parser": "^4.26.0",
    "babel-jest": "^27.0.2",
    "eslint": "^7.14.0",
    "eslint-config-prettier": "^8.3.0",
    "eslint-plugin-babel": "^5.3.1",
    "eslint-plugin-eslint-comments": "^3.2.0",
    "eslint-plugin-import": "^2.23.4",
    "eslint-plugin-jest": "^24.3.6",
    "eslint-plugin-prettier": "^3.4.0",
    "eslint-plugin-react": "^7.24.0",
    "eslint-plugin-react-hooks": "^4.2.0",
    "eslint-plugin-react-native": "^3.11.0",
    "eslint-plugin-react-native-a11y": "^2.0.4",
    "husky": "^6.0.0",
    "jest": "^27.0.4",
    "metro-react-native-babel-preset": "^0.66.0",
    "prettier": "^2.3.0",
    "typescript": "^4.3.2"
  },
  "scripts": {
    "prepare": "husky install",
    "lint": "eslint \"**/*.{js,ts,tsx}\"",
    "typescript": "tsc --noEmit --composite false",
    "test": "jest"
  },

tsconfig.json

{
  "compilerOptions": {
    "composite": true,
    "allowUnreachableCode": false,
    "allowUnusedLabels": false,
    "importsNotUsedAsValues": "error",
    "forceConsistentCasingInFileNames": true,
    "noFallthroughCasesInSwitch": true,
    "noImplicitReturns": true,
    "noImplicitUseStrict": false,
    "noStrictGenericChecks": false,
    "noUnusedLocals": true,
    "noUnusedParameters": true,
    "target": "esnext",             
    "module": "esnext",
    "lib": [
      "esnext",
      "dom"
      ],
    "allowJs": true,
    "jsx": "react-native",
    "isolatedModules": true,
    "strict": true,
    "moduleResolution": "node",
    "allowSyntheticDefaultImports": true,
    "esModuleInterop": true,
    "resolveJsonModule": true,
    "skipLibCheck": true,
    "baseUrl": ".",
    "paths": {
      "@app/*": [
        "./app/src"
      ],
      "@core/*": ["./core/packages/*/src"]
    },
    "outDir": "dist",
    "rootDirs":  ["."],
    "removeComments": true
  },
  "exclude": [
    "lib",
    "dist",
    "ios",
    "node_modules", 
    "babel.config.js", 
    "**/babel.config.js", 
    "metro.config.js", 
    "jest.config.js",
    "**/__tests__", 
    "**/__mocks__",
  ]
}