Replace Prettier and Eslint with Biome (#647)

* Replace Prettier and Eslint with Biome

* Simplify biome.json

* Check formatting in CI

.github/workflows/ci.yml

@@ -5,7 +5,7 @@ on:
   pull_request_target:
     types: [opened, synchronize, reopened]
     paths-ignore:
-      - '**.md'
+      - "**.md"
   pull_request:
     types: [opened, synchronize, reopened]
     paths:
@@ -40,6 +40,9 @@ jobs:
       - name: Build
         run: npm run build
 
+      - name: Check formatting
+        run: npm run format:check
+
       - name: Run linters
         run: npm run lint
 

biome.json

@@ -0,0 +1,32 @@
+{
+  "$schema": "https://biomejs.dev/schemas/1.8.3/schema.json",
+  "organizeImports": {
+    "enabled": true
+  },
+  "linter": {
+    "enabled": true,
+    "rules": {
+      "recommended": true,
+      "style": {
+        "noParameterAssign": "off"
+      }
+    },
+    "ignore": ["./demo", "**/dist/**"]
+  },
+  "formatter": {
+    "enabled": true,
+    "formatWithErrors": false,
+    "indentStyle": "space",
+    "indentWidth": 2,
+    "lineEnding": "lf",
+    "lineWidth": 90
+  },
+  "javascript": {
+    "formatter": {
+      "trailingCommas": "es5",
+      "semicolons": "asNeeded",
+      "bracketSpacing": false,
+      "quoteStyle": "single"
+    }
+  }
+}

demo/server.js

@@ -1,5 +1,3 @@
-'use strict'
-
 const path = require('path')
 const fs = require('fs')
 const assert = require('assert')