chore(deps-dev): moving from Biome+Prettier to Oxc

Author: erunion

.prettierignore

@@ -1,3 +1,3 @@
 {
-  "recommendations": ["EditorConfig.EditorConfig"]
+  "recommendations": ["oxc.oxc-vscode"]
 }

.vscode/extensions.json

@@ -1,10 +1,26 @@
 {
-  "editor.defaultFormatter": "esbenp.prettier-vscode",
+  "editor.defaultFormatter": "oxc.oxc-vscode",
   "editor.codeActionsOnSave": {
     "source.fixAll": "explicit"
   },
   "editor.formatOnSave": true,
 
+  // Explicitly disable non-Oxc extensions to avoid conflicts.
+  "biome.enabled": false,
+  "eslint.enable": false,
+  "oxc.enable.oxfmt": true,
+  "oxc.enable.oxlint": true,
+  "prettier.enable": false,
+
+  // Forcefully set the default formatter for all JS and TS files in this repository to Oxlint
+  // just in case somebody has it set to another formatter in their personal settings.
+  "[javascript]": {
+    "editor.defaultFormatter": "oxc.oxc-vscode"
+  },
+  "[typescript]": {
+    "editor.defaultFormatter": "oxc.oxc-vscode"
+  },
+
   // controlled by the .editorconfig at root since we can't map vscode settings directly to files
   // https://github.com/microsoft/vscode/issues/35350
   "files.insertFinalNewline": false,

.vscode/settings.json

@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2024 ReadMe (https://readme.com)
+Copyright (c) 2026 ReadMe (https://readme.com)
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

LICENSE

@@ -0,0 +1,11 @@
+import oxfmtConfig from '@readme/oxlint-config/oxfmt';
+import { defineConfig } from 'oxfmt';
+
+export default defineConfig(
+  Object.assign(structuredClone(oxfmtConfig), {
+    sortImports: {
+      ...oxfmtConfig.sortImports,
+    },
+    ignorePatterns: ['build/', 'coverage/', 'dist/', 'src/targets/**/fixtures/'],
+  }),
+);

biome.jsonc

@@ -0,0 +1,37 @@
+import oxlintConfig from '@readme/oxlint-config';
+import oxlintConfigVitest from '@readme/oxlint-config/testing/vitest';
+import oxlintConfigTS from '@readme/oxlint-config/typescript';
+import { defineConfig } from 'oxlint';
+
+export default defineConfig({
+  extends: [oxlintConfig, oxlintConfigTS],
+  options: {
+    reportUnusedDisableDirectives: 'error',
+  },
+  ignorePatterns: ['coverage/', 'dist/', 'src/targets/**/fixtures/'],
+  categories: {
+    suspicious: 'error',
+  },
+  env: {
+    browser: true,
+    commonjs: true,
+    es2022: true,
+    node: true,
+  },
+  rules: {
+    'class-methods-use-this': 'off',
+    'default-case': 'off',
+    'max-classes-per-file': 'off',
+    'no-param-reassign': 'off', // @fixme
+    'no-use-before-define': 'off', // @fixme
+    'unicorn/consistent-function-scoping': 'off', // @fixme
+    'unicorn/no-array-sort': 'off', // @fixme
+  },
+  overrides: [
+    {
+      files: ['test/**/*.test.{js,ts}'],
+      ...oxlintConfigVitest,
+      rules: oxlintConfigVitest.rules,
+    },
+  ],
+});