use biome instead of prettier and eslint

downgrade typescript to 5.5 due to problem with LRUCache dep

.github/workflows/main.yml

@@ -25,23 +25,22 @@ jobs:
       - name: Install Node.js
         uses: actions/setup-node@v4
         with:
-          node-version: "18.x"
+          node-version: "20.x"
       - name: Resolve vscode-elixir-ls dependencies
         run: |
           npm ci
       - name: Static analysis
         run: |
           npm run lint
-          npm run check-formatting
         if: runner.os != 'Windows'
       - name: Build
         run: |
           npm run compile
       - name: Setup Elixir
         uses: erlef/setup-beam@v1
         with:
-          elixir-version: 1.15.x
-          otp-version: 26.x
+          elixir-version: 1.17.x
+          otp-version: 27.x
       - name: Resolve elixir-ls dependencies
         run: |
           cd elixir-ls

.github/workflows/release.yml

@@ -20,12 +20,12 @@ jobs:
           fi
       - uses: actions/setup-node@v4
         with:
-          node-version: "18.x"
+          node-version: "20.x"
       - name: Setup Elixir
         uses: erlef/setup-beam@v1
         with:
-          elixir-version: 1.15.x
-          otp-version: 26.x
+          elixir-version: 1.17.x
+          otp-version: 27.x
       - run: npm ci
       - run: cd elixir-ls && mix deps.get
 

biome.json

@@ -0,0 +1,40 @@
+{
+  "$schema": "https://biomejs.dev/schemas/1.9.3/schema.json",
+  "vcs": {
+    "enabled": false,
+    "clientKind": "git",
+    "useIgnoreFile": false
+  },
+  "files": {
+    "ignoreUnknown": false,
+    "ignore": [
+      "node_modules",
+      ".vscode-test",
+      "out",
+      "syntaxes",
+      "elixir-ls",
+      ".vscode",
+      "elixir-language-configuration.json",
+      "eex-language-configuration.json",
+			"telemetry.json"
+    ]
+  },
+  "formatter": {
+    "enabled": true,
+    "indentStyle": "space"
+  },
+  "organizeImports": {
+    "enabled": true
+  },
+  "linter": {
+    "enabled": true,
+    "rules": {
+      "recommended": true
+    }
+  },
+  "javascript": {
+    "formatter": {
+      "quoteStyle": "double"
+    }
+  }
+}