use formatter

Author: charliesbot

typescript/.prettierrc.json

@@ -18,59 +18,4 @@ declare global {
   function linkedListToArray(head: ListNode | null): number[];
 }
 
-// Implementation
-(globalThis as any).ListNode = class ListNode {
-  prev: ListNode | null;
-  next: ListNode | null;
-  val: number;
-  key?: number;
-
-  constructor(
-    valOrOptions: number | ListNodeConstructor,
-    next: ListNode | null = null
-  ) {
-    if (typeof valOrOptions === 'object') {
-      this.prev = null;
-      this.next = null;
-      this.val = valOrOptions.value;
-      this.key = valOrOptions.key;
-    } else {
-      this.prev = null;
-      this.next = next;
-      this.val = valOrOptions;
-      this.key = undefined;
-    }
-  }
-};
-
-(globalThis as any).createLinkedList = function (
-  values: number[]
-): ListNode | null {
-  if (values.length === 0) return null;
-
-  const head = new ListNode(values[0]);
-  let current = head;
-
-  for (let i = 1; i < values.length; i++) {
-    current.next = new ListNode(values[i]);
-    current = current.next;
-  }
-
-  return head;
-};
-
-(globalThis as any).linkedListToArray = function (
-  head: ListNode | null
-): number[] {
-  const result: number[] = [];
-  let current = head;
-
-  while (current !== null) {
-    result.push(current.val);
-    current = current.next;
-  }
-
-  return result;
-};
-
 export {};

typescript/@types/Node.ts

@@ -4,7 +4,7 @@ This workspace is configured for solving LeetCode problems in TypeScript.
 
 ## Setup
 - **Vitest** for testing and test runner
-- **Prettier** for code formatting  
+- **Biome** for fast linting and formatting  
 - **TypeScript** for type safety and modern JavaScript features
 
 ## Prerequisites
@@ -72,6 +72,7 @@ npx vitest
 # Type checking
 npx tsc --noEmit
 
-# Format code
-npx prettier --write *.ts
+# Lint and format code
+npm run lint
+npm run format
 ```

typescript/@types/global.d.ts

@@ -0,0 +1,37 @@
+{
+  "$schema": "https://biomejs.dev/schemas/1.9.4/schema.json",
+  "formatter": {
+    "enabled": true,
+    "indentStyle": "space",
+    "indentWidth": 2,
+    "lineWidth": 100
+  },
+  "linter": {
+    "enabled": true,
+    "rules": {
+      "recommended": true,
+      "complexity": {
+        "noExcessiveCognitiveComplexity": "off"
+      },
+      "style": {
+        "noParameterAssign": "off",
+        "useConst": "off",
+        "useSingleVarDeclarator": "off"
+      },
+      "suspicious": {
+        "noEmptyBlockStatements": "warn"
+      },
+      "correctness": {
+        "noUnusedVariables": "warn"
+      }
+    }
+  },
+  "javascript": {
+    "formatter": {
+      "quoteStyle": "single",
+      "semicolons": "always",
+      "trailingCommas": "all",
+      "arrowParentheses": "asNeeded"
+    }
+  }
+}

typescript/README.md

@@ -0,0 +1,62 @@
+# Compiled JavaScript files
+*.js
+*.js.map
+
+# TypeScript build output
+dist/
+build/
+
+# Node.js dependencies
+node_modules/
+
+# IDE and editor files
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS generated files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# Logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Coverage directory used by tools like istanbul
+coverage/
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Environment variables
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+# Temporary files
+tmp/
+temp/

typescript/biome.json

@@ -0,0 +1,54 @@
+// Global implementations
+type ListNodeConstructor = {
+  key?: number;
+  value: number;
+};
+
+class ListNodeImpl {
+  prev: ListNode | null;
+  next: ListNode | null;
+  val: number;
+  key?: number;
+
+  constructor(valOrOptions: number | ListNodeConstructor, next: ListNode | null = null) {
+    if (typeof valOrOptions === 'object') {
+      this.prev = null;
+      this.next = null;
+      this.val = valOrOptions.value;
+      this.key = valOrOptions.key;
+    } else {
+      this.prev = null;
+      this.next = next;
+      this.val = valOrOptions;
+      this.key = undefined;
+    }
+  }
+}
+
+(globalThis as any).ListNode = ListNodeImpl;
+
+(globalThis as any).createLinkedList = function (values: number[]): ListNode | null {
+  if (values.length === 0) return null;
+
+  const head = new ListNodeImpl(values[0]);
+  let current = head;
+
+  for (let i = 1; i < values.length; i++) {
+    current.next = new ListNodeImpl(values[i]);
+    current = current.next;
+  }
+
+  return head;
+};
+
+(globalThis as any).linkedListToArray = function (head: ListNode | null): number[] {
+  const result: number[] = [];
+  let current = head;
+
+  while (current !== null) {
+    result.push(current.val);
+    current = current.next;
+  }
+
+  return result;
+};