About JavaScriptConverter

What we build

JavaScriptConverter is the newest member of a small family of focused, single-purpose developer tools. Each one solves one problem completely:

• JavaScriptConverter — this site. Deterministic JS→TS, JSON→TS, TS→Zod, TS→JS.
• JavaScriptObfuscator — source code obfuscation and minification.
• RichTextEditor — cross-browser WYSIWYG component used by enterprise CMS platforms.
• AjaxUploader / ASPUploader / PHPFileUploader — file-upload components for every server stack.
• MyLiveChat — free live-chat widget.

Why deterministic instead of AI?

Every other JS-to-TS tool we've seen routes your source code through a large language model. That trades reproducibility for novelty: the same input can produce different output, types can be hallucinated, and your code leaves your machine. For toy snippets it's fine. For production codebases it's a code-review tax on every conversion.

We chose a different path. The JavaScriptConverter engine sits on top of the ts-morph wrapper around the TypeScript compiler. Every transform it performs is named, documented, and reproducible:

• CommonJS require/module.exports rewriting
• JSDoc @param/@returns/@type extraction
• Class-field detection from constructor assignments
• Static-member hoisting
• Accessibility inference from naming conventions
• tsconfig.json generation
• Error-suppression scaffolding

The diff stays auditable. The output is reviewable. And the free Windows desktop app runs the same engine locally — your source never leaves your machine.

Where we are

Security & responsible disclosure

We accept security reports via the contact in /.well-known/security.txt. Please give us a reasonable window to address issues before public disclosure.