import { defineConfig } from 'oxlint';

export default defineConfig({
  plugins: ['typescript', 'unicorn', 'oxc', 'import', 'promise'],
  categories: {
    correctness: 'error',
    suspicious: 'error',
    pedantic: 'error',
    perf: 'error',
    restriction: 'error',
  },
  rules: {
    // Guards for code compiled down to pre-ES2018/2020; this targets ESNext.
    'oxc/no-optional-chaining': 'off',
    'oxc/no-rest-spread-properties': 'off',
    'oxc/no-async-await': 'off',
    // `void promise;` is how `no-floating-promises` says to ignore one on purpose.
    'eslint/no-void': ['error', { allowAsStatement: true }],
    // `undefined` is a real prop value (`userId: number | undefined`).
    'eslint/no-undefined': 'off',
    // Members are public by default and private via `#`; `public` is noise.
    'typescript/explicit-member-accessibility': 'off',
    // DOM types can't be deeply readonly, so every `Element` parameter fails.
    'typescript/prefer-readonly-parameter-types': 'off',
    // `function foo()` over `const foo = () => ...`. Inline callbacks
    // (`.map((x) => ...)`) and arrows that use `this` aren't affected.
    'eslint/func-style': ['error', 'declaration'],
    // The mixin's hooks are deliberately empty methods for subclasses to override.
    'eslint/class-methods-use-this': [
      'error',
      {
        exceptMethods: ['handleEvent', 'onConnect', 'onDisconnect', 'onPropChange'],
        ignoreOverrideMethods: true,
      },
    ],
  },
  overrides: [
    {
      files: ['test/**/*.ts'],
      plugins: ['typescript', 'unicorn', 'oxc', 'import', 'promise', 'vitest'],
      rules: {
        // Tests import the source under test from `../src`.
        'import/no-relative-parent-imports': 'off',
        // `describe` callbacks are long, and each test of a class factory
        // needs its own small class.
        'eslint/max-lines-per-function': 'off',
        'eslint/max-classes-per-file': 'off',
        // Test files grow with coverage; splitting them by line count doesn't help.
        'eslint/max-lines': 'off',
      },
    },
    {
      files: ['examples/**/*.ts'],
      rules: {
        // Examples import the library from `../src`, like the tests.
        'import/no-relative-parent-imports': 'off',
        // Importing a component module is how it gets registered.
        'import/no-unassigned-import': 'off',
        // `onPropChange` switches are exhaustive over prop names, which
        // `switch-exhaustiveness-check` enforces; a `default` would hide a missed one.
        'eslint/default-case': 'off',
      },
    },
    {
      // Ambient declaration files are scripts on purpose: no imports or exports.
      files: ['**/*.d.ts'],
      rules: {
        'import/unambiguous': 'off',
      },
    },
  ],
  env: {
    builtin: true,
    browser: true,
  },
  ignorePatterns: ['dist/'],
});