TypeScript to JavaScript: Strip Types for Production and Compatibility

Sometimes you need plain JavaScript — for a quick prototype, a browser console snippet, a Node.js script without build tools, or sharing code with a team that doesn't use TypeScript. Stripping types should preserve all runtime behavior while removing compile-time annotations.

What Is TypeScript to JavaScript?

TypeScript to JavaScript conversion removes type annotations, interface declarations, enums (converting to objects), and other TS-specific syntax while preserving all runtime logic. Our TS to JS converter handles generics, decorators, and access modifiers.

How to Use TypeScript to JavaScript on DevToolHub

1. Open the TypeScript to JavaScript tool on DevToolHub — no signup required.
2. Paste or enter your input data in the left panel.
3. See the result instantly in the output panel.
4. Copy the result or download it as a file.

Stripping Types From a Function

Remove TypeScript annotations while keeping logic intact:

// TypeScript
interface User {
  id: number;
  name: string;
  email: string;
}

async function getUser(id: number): Promise<User> {
  const response: Response = await fetch(`/api/users/${id}`);
  const data: User = await response.json();
  return data;
}

// JavaScript (types removed)
async function getUser(id) {
  const response = await fetch(`/api/users/${id}`);
  const data = await response.json();
  return data;
}

Pro Tips

• Interface and type declarations are completely removed — they don't exist at runtime
• Enums convert to plain objects or constants depending on the conversion approach
• Access modifiers (private, public, protected) are removed — use # for runtime private fields
• Type-only imports (import type {}) are removed entirely — runtime imports remain

When You Need This

• Creating browser-compatible scripts from TypeScript source
• Sharing code with JavaScript-only projects or developers
• Running quick prototypes without TypeScript compilation
• Extracting runtime logic from typed codebases for debugging