Migrate from ESLint to Oxlint and Dprint

.oxlintrc.json

@@ -0,0 +1,28 @@
+{
+  "$schema": "https://raw.githubusercontent.com/oxc-project/oxc/main/npm/oxlint/configuration_schema.json",
+  "extends": ["./packages/tools/oxc/oxlintrc.json"],
+  "ignorePatterns": [
+    "**/dist",
+    "**/build",
+    "**/docs",
+    "**/.tsbuildinfo",
+    "!scratchpad/**/*",
+    // TODO: This should be in a nested .oxlintrc.json, but it does not work
+    //       See related issue: https://github.com/oxc-project/oxc/issues/13204
+    "packages/amp/src/Protobuf/**/*"
+  ],
+  "jsPlugins": [
+    "@amp/oxc/oxlint"
+  ],
+  "overrides": [
+    {
+      "files": [
+        "**/{test,dtslint,examples,benchmark,bundle,scripts,scratchpad}/**"
+      ],
+      "rules": {
+        "eslint/no-console": "off",
+        "effect/no-import-from-barrel-package": "off"
+      }
+    }
+  ]
+}

.vscode/extensions.json

@@ -0,0 +1,6 @@
+{
+  "recommendations": [
+    "oxc.oxc-vscode",
+    "dprint.dprint"
+  ]
+}

.vscode/settings.json

@@ -1,32 +1,27 @@
 {
+  "dprint.path": "node_modules/dprint/dprint",
   "typescript.tsdk": "node_modules/typescript/lib",
   "typescript.preferences.importModuleSpecifier": "relative",
   "typescript.enablePromptUseWorkspaceTsdk": true,
-  "eslint.format.enable": true,
-  "eslint.validate": [
-    "javascript",
-    "typescript"
-  ],
-  "[javascript][javascriptreact][typescript][typescriptreact]": {
-    "editor.formatOnSave": true,
-    "editor.defaultFormatter": "dbaeumer.vscode-eslint",
-    "editor.codeActionsOnSave": {
-      "source.fixAll.eslint": "explicit"
-    },
-    "editor.quickSuggestions": {
-      "other": true,
-      "comments": false,
-      "strings": false
-    },
-    "editor.acceptSuggestionOnCommitCharacter": true,
-    "editor.acceptSuggestionOnEnter": "on",
-    "editor.quickSuggestionsDelay": 10,
-    "editor.suggestOnTriggerCharacters": true,
-    "editor.tabCompletion": "off",
-    "editor.suggest.localityBonus": true,
-    "editor.suggestSelection": "recentlyUsed",
-    "editor.wordBasedSuggestions": "matchingDocuments",
-    "editor.parameterHints.enabled": true,
-    "files.insertFinalNewline": true,
+  "editor.formatOnSave": true,
+  "editor.defaultFormatter": "dprint.dprint",
+  "editor.formatOnSaveMode": "file",
+  "editor.codeActionsOnSave": {
+    "source.fixAll.oxc": "explicit"
   },
+  "editor.quickSuggestions": {
+    "other": true,
+    "comments": false,
+    "strings": false
+  },
+  "editor.acceptSuggestionOnCommitCharacter": true,
+  "editor.acceptSuggestionOnEnter": "on",
+  "editor.quickSuggestionsDelay": 10,
+  "editor.suggestOnTriggerCharacters": true,
+  "editor.tabCompletion": "off",
+  "editor.suggest.localityBonus": true,
+  "editor.suggestSelection": "recentlyUsed",
+  "editor.wordBasedSuggestions": "matchingDocuments",
+  "editor.parameterHints.enabled": true,
+  "files.insertFinalNewline": true
 }

dprint.json

@@ -0,0 +1,28 @@
+{
+  "$schema": "https://dprint.dev/schemas/v0.json",
+  "includes": ["**/*.{ts,tsx,js,jsx,json,md}"],
+  "indentWidth": 2,
+  "lineWidth": 120,
+  "newLineKind": "lf",
+  "typescript": {
+    "semiColons": "asi",
+    "quoteStyle": "alwaysDouble",
+    "trailingCommas": "never",
+    "operatorPosition": "maintain",
+    "arrowFunction.useParentheses": "force"
+  },
+  "excludes": [
+    "**/dist",
+    "**/build",
+    "**/docs",
+    "**/coverage",
+    "!scratchpad/**/*",
+    // TODO: move to nested configuration if possible
+    "packages/amp/src/Protobuf/**"
+  ],
+  "plugins": [
+    "https://plugins.dprint.dev/typescript-0.93.4.wasm",
+    "https://plugins.dprint.dev/markdown-0.20.0.wasm",
+    "https://plugins.dprint.dev/json-0.21.1.wasm"
+  ]
+}

package.json

@@ -5,28 +5,23 @@
   "scripts": {
     "check": "tspc -b tsconfig.json",
     "clean": "node scripts/clean.mjs",
-    "lint": "eslint \"**/{src,test,examples,dtslint}/**/*.{ts,mjs}\"",
-    "lint-fix": "pnpm lint --fix",
+    "lint": "oxlint && dprint check",
+    "lint-fix": "oxlint --fix && dprint fmt",
     "test": "vitest"
   },
   "devDependencies": {
-    "@effect/eslint-plugin": "^0.3.2",
+    "@amp/oxc": "workspace:^",
     "@effect/language-service": "^0.62.4",
     "@effect/platform-node": "^0.104.0",
     "@effect/vitest": "^0.27.0",
-    "@eslint/js": "^9.39.2",
     "@types/node": "^25.0.3",
     "@vitest/coverage-v8": "^4.0.16",
     "@vitest/ui": "^4.0.16",
+    "dprint": "^0.51.1",
     "effect": "^3.19.13",
-    "eslint": "^9.39.2",
-    "eslint-import-resolver-typescript": "^4.4.4",
-    "eslint-plugin-import-x": "^4.16.1",
-    "eslint-plugin-simple-import-sort": "^12.1.1",
-    "eslint-plugin-sort-destructure-keys": "^2.0.0",
-    "eslint-plugin-unused-imports": "^4.3.0",
     "glob": "^13.0.0",
     "globals": "^16.5.0",
+    "oxlint": "^1.38.0",
     "ts-patch": "^3.3.0",
     "typescript": "^5.9.3",
     "typescript-eslint": "^8.50.0",

packages/amp/README.md

@@ -5,5 +5,5 @@
 **Enabling TypeScript's `erasableSyntaxOnly` Feature**
 
 For some completely absurd reason, the `@bufbuild/protoc-gen-es` plugin does not support generating enum values as anything other than TypeScript enums at this time, so we cannot yet enable this flag.
-    
+
 See the [related `protobuf-es` issue](https://github.com/bufbuild/protobuf-es/issues/1139) for more information.

packages/amp/tsconfig.build.json

@@ -1,6 +1,6 @@
 {
   "$schema": "http://json.schemastore.org/tsconfig",
-  "extends": "./tsconfig.src.jsonc",
+  "extends": "./tsconfig.src.json",
   "compilerOptions": {
     "tsBuildInfoFile": ".tsbuildinfo/build.tsbuildinfo",
     "outDir": "dist",

packages/amp/tsconfig.json

@@ -1,6 +1,6 @@
 {
   "$schema": "http://json.schemastore.org/tsconfig",
-  "extends": "../../tsconfig.base.jsonc",
+  "extends": "../../tsconfig.base.json",
   "include": [],
   "references": [
     { "path": "tsconfig.src.json" },

packages/amp/tsconfig.src.json

@@ -1,6 +1,6 @@
 {
   "$schema": "http://json.schemastore.org/tsconfig",
-  "extends": "../../tsconfig.base.jsonc",
+  "extends": "../../tsconfig.base.json",
   "include": ["src"],
   "compilerOptions": {
     "tsBuildInfoFile": ".tsbuildinfo/src.tsbuildinfo",

packages/amp/tsconfig.test.json

@@ -1,6 +1,6 @@
 {
   "$schema": "http://json.schemastore.org/tsconfig",
-  "extends": "../../tsconfig.base.jsonc",
+  "extends": "../../tsconfig.base.json",
   "include": ["test"],
   "references": [{ "path": "tsconfig.src.json" }],
   "compilerOptions": {