.eslintrc.json

{
  "env": {
    "browser": true,
    "es6": true
  },
  "extends": [
    "airbnb-typescript",
    "airbnb/hooks",
    "plugin:prettier/recommended",
    "plugin:@typescript-eslint/recommended"
  ],
  "parser": "@typescript-eslint/parser",
  "parserOptions": {
    "ecmaFeatures": {
      "jsx": true
    },
    "ecmaVersion": 12,
    "sourceType": "module",
    "project": "./tsconfig.json"
  },
  "plugins": ["react", "simple-import-sort", "@typescript-eslint"],
  "rules": {
    "array-callback-return": "off", // Allows us not to return anything from arrow functions.
    "consistent-return": "off", // Same as above.
    "import/prefer-default-export": "off", // Allows us to use named exports.
    "no-underscore-dangle": "off", // Ignore underscores in e.g. GraphQL type names etc.
    "react/jsx-props-no-spreading": "off", // Allow prop spreading.
    "react-hooks/rules-of-hooks": "off", // Allow calling e.g. `useDayjs` within JSX.
    "react/require-default-props": "off", // Allow defining default props in the signature.
    "react/prop-types": "off", // Allows us to not use prop-types.
    "simple-import-sort/imports": "error", // Require imports to be ordered correctly.
    "simple-import-sort/exports": "error", // Require exports to be ordered correctly.
    "@typescript-eslint/ban-ts-comment": "off", // Allows us to make TS ignores with ignore comments.
    "@typescript-eslint/no-non-null-assertion": "off", // Allows us to make non-null assertions for e.g. ref objects that are cumbersome to use with TS.
    "@typescript-eslint/no-unused-vars": "error", // Show error instead of the default warning for unused variables.
    "@typescript-eslint/naming-convention": "off", // Allows usage of e.g. underscores in variable names.
    "no-restricted-imports": [
      "error",
      {
        "paths": [
          "@material-ui/core",
          "@material-ui/icons",
          "@material-ui/core/useMediaQuery",
          "__generated__/src/graphql/common.graphql"
        ],
        "patterns": [
          // https://material-ui.com/guides/minimizing-bundle-size/#option-1
          "@material-ui/*/*/*",
          "!@material-ui/core/test-utils/*"
        ]
      }
    ],
    // TODO: Under this comment, remove all rule overrides and make the necessary refactors to fix the linting errors.
    "react/no-array-index-key": "off",
    "no-restricted-globals": "off",
    "no-restricted-syntax": "off",
    "@typescript-eslint/no-shadow": "off",
    "no-await-in-loop": "off"
  },
  "overrides": [
    {
      "files": ["*.ts", "*.tsx"],
      "rules": {
        "@typescript-eslint/explicit-function-return-type": ["error"] // Require return types for all functions.
      }
    }
  ]
}