Migrate from eslint/prettier to biome (#25)

- **migrate from eslint/prettier to biome**
- **lint and format project**

Author: corentinmusard

.eslintignore

@@ -15,14 +15,12 @@ jobs:
           node-version-file: package.json
           cache: npm
       - name: Install Dependencies
-        run: npm ci --ignore-scripts
-      - name: lint
-        run: npm run lint:ci
-      - name: format check
-        run: npm run format:ci
-      - name: build
+        run: npm ci
+      - name: Run Biome (format + lint + import sorting)
+        run: npm run biome:ci
+      - name: Build
         run: npm run build
-      - name: validate dist
+      - name: Validate dist
         run: |
           git diff
           exit $(git status --porcelain | wc -l)
@@ -38,7 +36,7 @@ jobs:
           node-version-file: package.json
           cache: npm
       - name: Install Dependencies
-        run: npm ci --ignore-scripts
+        run: npm ci
       - name: run tests
         run: npm run test:ci
       - uses: inception-health/otel-upload-test-artifact-action@v1

.eslintrc.json

@@ -1,3 +1,3 @@
 {
-  "recommendations": ["esbenp.prettier-vscode", "dbaeumer.vscode-eslint"]
+  "recommendations": ["biomejs.biome", "davidanson.vscode-markdownlint"]
 }

.github/workflows/build.yml

@@ -1,6 +1,27 @@
 {
+  "typescript.tsdk": "node_modules/typescript/lib",
   "editor.formatOnSave": true,
-  "editor.defaultFormatter": "esbenp.prettier-vscode",
+  "editor.defaultFormatter": "biomejs.biome",
   "editor.rulers": [120],
-  "files.insertFinalNewline": true
+  "files.insertFinalNewline": true,
+  "emmet.showExpandedAbbreviation": "never",
+  "editor.codeActionsOnSave": {
+    "quickfix.biome": "explicit",
+    "source.organizeImports.biome": "explicit"
+  },
+  "[typescript]": {
+    "editor.defaultFormatter": "biomejs.biome"
+  },
+  "[javascript]": {
+    "editor.defaultFormatter": "biomejs.biome"
+  },
+  "[jsonc]": {
+    "editor.defaultFormatter": "biomejs.biome"
+  },
+  "[json]": {
+    "editor.defaultFormatter": "biomejs.biome"
+  },
+  "[markdown]": {
+    "editor.defaultFormatter": "DavidAnson.vscode-markdownlint"
+  }
 }

.prettierignore

@@ -0,0 +1,24 @@
+{
+  "$schema": "./node_modules/@biomejs/biome/configuration_schema.json",
+  "files": { "ignore": ["dist/**"] },
+  "formatter": {
+    "indentStyle": "space",
+    "lineWidth": 120
+  },
+  "linter": {
+    "rules": {
+      "complexity": {
+        "useLiteralKeys": "off"
+      },
+      "performance": {
+        "noAccumulatingSpread": "off"
+      }
+    }
+  },
+  "vcs": {
+    "enabled": true,
+    "clientKind": "git",
+    "useIgnoreFile": true,
+    "defaultBranch": "main"
+  }
+}