AI Type Adder

Add comprehensive type annotations to your code. Our AI-powered type adder helps you convert untyped code into fully typed code with proper annotations.

Features

• Complete Typing: Adds types to all functions and variables
• Interface Generation: Creates interfaces for complex objects
• Generic Types: Uses generics when appropriate
• Best Practices: Follows language-specific typing conventions

How to Use

1. Select the target language (TypeScript, Python, etc.)
2. Paste the code you want to add types to
3. Click Generate to get the typed version
4. Review and integrate the type annotations

Supported Languages

Language	Type System
TypeScript	Full TypeScript types and interfaces
Python	Type hints (PEP 484/585)
Java	Generic types and annotations
C#	Type annotations and nullability

What Gets Typed

• Function Parameters: Input parameter types
• Return Types: Function return type annotations
• Variables: Variable declarations with types
• Objects: Interface definitions for object shapes
• Arrays: Array element types
• Generics: Type parameters where beneficial

TypeScript Example

// Before
function processData(data, options) {
  return data.map(item => item.value);
}

// After
interface DataItem {
  value: number;
  label: string;
}

interface Options {
  filter?: boolean;
  limit?: number;
}

function processData(data: DataItem[], options: Options): number[] {
  return data.map(item => item.value);
}

Benefits

• Type Safety: Catch errors at compile time
• IDE Support: Better autocomplete and refactoring
• Documentation: Types serve as inline documentation
• Maintainability: Easier to understand and modify