.eslintrc

{
  "env": { "jest": true },
  "extends": ["airbnb-typescript"],
  "globals": {
    "fetch": false
  },
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "project": "./tsconfig.json"
  },
  "plugins": ["@typescript-eslint", "prettier"],
  "rules": {
    "arrow-body-style": ["error", "as-needed"],
    "arrow-parens": ["error", "as-needed"],
    "comma-dangle": "off",
    "@typescript-eslint/comma-dangle": [
      "error",
      {
        "arrays": "always-multiline",
        "exports": "always-multiline",
        "functions": "never",
        "imports": "always-multiline",
        "objects": "always-multiline"
      }
    ],
    "no-plusplus": ["error", { "allowForLoopAfterthoughts": true }],
    "function-paren-newline": "off",
    "implicit-arrow-linebreak": "off",
    "import/prefer-default-export": "off",
    "indent": ["warn", 2, { "SwitchCase": 1 }],
    "max-len": ["warn", { "code": 100, "ignoreTemplateLiterals": true }],
    "@typescript-eslint/naming-convention": [
      "error",
      {
        "selector": "memberLike",
        "modifiers": ["private"],
        "leadingUnderscore": "require",
        "format": ["camelCase"]
      }
    ],
    "no-underscore-dangle": "off",
    "no-confusing-arrow": "off",
    "no-param-reassign": "off",
    "no-use-before-define": "off",
    "@typescript-eslint/no-use-before-define": ["error", { "variables": false }],
    "object-curly-newline": ["error", { "ObjectPattern": { "multiline": true } }],
    "operator-linebreak": "off",
    "prettier/prettier": "error",
    "quotes": ["error", "single", { "avoidEscape": true }],
    "react/jsx-boolean-value": "off",
    "react/jsx-filename-extension": [1, { "extensions": [".js", ".jsx", ".ts", ".tsx"] }],
    "react/jsx-one-expression-per-line": "off",
    "react/jsx-props-no-spreading": "off",
    "react/static-property-placement": ["warn", "property assignment"],
    "strict": "off",
    // disable the rule for js files (its enabled for ts files in overrides)
    "@typescript-eslint/explicit-module-boundary-types": "off"
  },
  "overrides": [
    {
      // enable rule specifically for ts files
      "files": ["*.ts", "*.tsx"],
      "rules": {
        "@typescript-eslint/explicit-module-boundary-types": ["error"]
      }
    }
  ]
}