setup development env

.envrc

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+use flake

.github/workflows/check.yml

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+name: Check
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  biome:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+      - uses: actions/checkout@v4
+      - uses: oven-sh/setup-bun@v2
+      - run: bun install --frozen-lockfile
+      - run: bun biome ci

.gitignore

@@ -1 +1,2 @@
 node_modules
+.direnv

biome.jsonc

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+{
+  "$schema": "https://biomejs.dev/schemas/1.9.4/schema.json",
+  "vcs": {
+    "enabled": true,
+    "clientKind": "git",
+    "useIgnoreFile": true
+  },
+  "files": {
+    "ignoreUnknown": false,
+    "ignore": []
+  },
+  "formatter": {
+    "enabled": true,
+    "lineWidth": 120,
+    "indentStyle": "space",
+    "indentWidth": 2
+  },
+  "organizeImports": {
+    "enabled": true
+  },
+  "linter": {
+    "enabled": true,
+    "rules": {
+      "recommended": true,
+      "correctness": {
+        "noUnknownProperty": "off"
+      },
+      "complexity": {
+        "noForEach": "off"
+      },
+      "a11y": {
+        "useButtonType": "off"
+      }
+    }
+  },
+  "javascript": {
+    "formatter": {
+      "quoteStyle": "double"
+    }
+  }
+}