Convert JavaScript to TypeScript instantly. Perfect for adding type safety to JavaScript projects, catching bugs at compile time, and improving code maintainability.
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Converting JavaScript to TypeScript adds compile-time type checking, catches bugs before runtime, and provides better IDE autocomplete and refactoring. Our AI converter analyzes your JavaScript code to infer types, adds type annotations to functions and variables, creates interfaces from object shapes, and uses union types for flexible parameters. Perfect for migrating JavaScript projects to TypeScript incrementally, improving code documentation with types, catching type-related bugs early, or enabling better tooling support. The converter follows TypeScript best practices, using strict types where clear and any types where inference is ambiguous, allowing gradual refinement.
Analyzes JavaScript to infer types. Variable initialization determines types, function returns infer from return statements, parameters infer from usage, and literals get specific types rather than general ones.
Extracts interfaces from object shapes. Repeated object patterns become reusable interfaces, function parameters with object types get interface definitions, and complex nested structures generate proper interface hierarchies.
Uses 'any' type for ambiguous cases, allowing incremental type refinement. Code compiles immediately, letting you strengthen types over time. Balances strictness with practical migration needs.
Identifies generic patterns in JavaScript and adds TypeScript generics. Array operations get proper generic types, callback functions use type parameters, and utility functions become type-safe generics.
The converter analyzes usage patterns to infer types. Variable assignments determine basic types, function parameters infer from usage, return types come from return statements, and complex types use union types or any where ambiguous.
Ambiguous code gets the 'any' type initially for safety, allowing gradual typing. You can then refine these to specific types. The converter prioritizes compilation success, letting you strengthen types incrementally.
Yes! The converter extracts interfaces from object literals and function parameters. Repeated object shapes become reusable interfaces, improving type reusability and code documentation with proper TypeScript patterns.
