.eslintrc

{
  "extends": ["airbnb-base", "prettier"],
  "root": true,
  "env": {
    "amd": true,
    "jasmine": true,
    "browser": true,
    "es6": true,
    "jest": true,
    "node": true
  },
  "globals": {
    "BigInt": "readonly",
    "BigInt64Array": "readonly",
    "BigUint64Array": "readonly",
    "globalThis": "readonly"
  },
  "parserOptions": {
    "ecmaVersion": 2020,
    "sourceType": "module"
  },
  "plugins": [
    "prettier"
  ],
  "rules": {
    "prettier/prettier": "error",
    // Overridden
    "no-eval": "off",
    "camelcase": ["error", { "properties": "never", "allow": [ "W[0-9]+_"] }],
    "import/extensions": "off",
    // @TODO: Fix the following rules progressively.
    "arrow-body-style": "warn",
    "prefer-arrow-callback": "warn",
    "prefer-object-spread": "off",
    "max-classes-per-file": "off",
    "dot-notation": "off",
    "object-shorthand": "off",
    "no-param-reassign": "off",
    "no-cond-assign": "off",
    "prefer-destructuring": "off",
    "func-names": "off",
    "no-nested-ternary": "off",
    "no-plusplus": "off",
    "strict": "off",
    "no-restricted-syntax": "off",
    "import/no-mutable-exports": "off",
    "guard-for-in": "off",
    "import/prefer-default-export": "off",
    "prefer-rest-params": "off",
    "one-var": "off",
    "prefer-spread": "off",
    "no-lonely-if": "off",
    "no-prototype-builtins": "off",
    "no-continue": "off",
    "no-shadow": "off",
    // Rules up for discussion.
    "no-multi-assign": "off",
    "new-cap": "off"
  },
  "overrides": [
    {
      "files": ["**/*.ts"],
      "parserOptions": {
         "project": "./tsconfig.json"
      },
      "extends": [
        "airbnb-typescript/base",
        "prettier"
      ],
      "plugins": ["@typescript-eslint"],
      "rules": {
        "@typescript-eslint/no-unused-vars": [
          "warn",
          {
            "vars": "all",
            "args": "after-used",
            "ignoreRestSiblings": true,
            "argsIgnorePattern": "^_" // For tsc compatibility.
          }
        ],
        "comma-dangle": "off",
        "implicit-arrow-linebreak": "off", // Conflicts with prettier.
        "import/extensions": "off",
        "import/prefer-default-export": "off",
        "operator-linebreak": "off",
        "object-curly-newline": "off",
        "prefer-rest-params": "off", // We need to use params.
        "prettier/prettier": "error",
        "@typescript-eslint/no-shadow": "warn",
        "@typescript-eslint/no-use-before-define": ["warn", { "functions": false }],
        "import/no-cycle": "warn",
        "no-bitwise": "off",
        "no-unsafe-finally": "warn",
        "no-param-reassign": "off",
        "no-shadow": "warn"
      }
    }
  ]
}