.eslintrc.js

// This is the configuration file for ESLint, the TypeScript linter.
// https://eslint.org/docs/user-guide/configuring
module.exports = {
  extends: [
    // The linter base is the shared IsaacScript config.
    // https://github.com/IsaacScript/isaacscript/blob/main/packages/eslint-config-isaacscript/base.js
    "eslint-config-isaacscript/base",
  ],

  parserOptions: {
    // ESLint needs to know about the project's TypeScript settings in order for TypeScript-specific
    // things to lint correctly. We do not point this at "./tsconfig.json" because certain files
    // (such at this file) should be linted but not included in the actual project output.
    project: "./tsconfig.eslint.json",
  },

  // We modify the linting rules from the base for some specific things.
  rules: {
    "no-bitwise": 0,
    "no-param-reassign": ["error", { props: false }],
    curly: ["error", "multi"],
    "n/file-extension-in-import": "off",
    "no-void": "off",
    "isaacscript/no-void-return-type": "off",
    "unicorn/prefer-top-level-await": "off",
    "isaacscript/complete-sentences-line-comments": "off",
  },
};