Changelog

Engine rewrite on top of ts-morph 27, desktop app shipped on .NET 9, and a new site-wide converter matrix (JSON, Zod, TS→JS).

Added

• New deterministic transforms: static-property hoisting and accessibility inference (_underscore → private).
• Client-side JSON→TypeScript, TypeScript→Zod, and TypeScript→JavaScript converters — nothing leaves the browser.
• Dedicated landing pages for CommonJS→ESM, JSDoc→TS, React JSX→TSX, Node.js→TS, and tsconfig generation.
• REST API documentation and per-tier rate limits.

Changed

• Conversion engine packaged as a sibling Node service supervised by the ASP.NET host on production (no more NSSM dependency).
• SQLite is now the default Development database; SQL Server stays for production.
• Tag-helper-generated URLs are lowercase site-wide to consolidate duplicate-case indexing.

Fixed

• Custom 404 page now returns the correct HTTP status (was 200 OK in v2).
• Open Graph image stops 404-ing; new 1200×630 SVG card.

Added

• JSDoc @typedef support — named types lift into type aliases instead of being inlined.
• Optional parameter detection: @param {string} [name] becomes name?: string.
• Diagnostics include the original JSDoc source position.

Fixed

• Default exports defined as expressions (module.exports = expr) no longer drop trailing semicolons.
• JSX detection no longer false-positives on TypeScript generics (<T>value).

Added

• Automatic @ts-expect-error scaffolding for residual diagnostics so converted code compiles immediately.
• tsconfig generation tuned per project: Node.js, browser, and React presets.

Fixed

• Destructured require no longer loses default rename aliases (const { x: y } = require(...)).

Added

• Class-property detection from constructor assignments.
• Online converter with paste-and-convert UI; ZIP batch upload via the dashboard.
• Pricing plans with Stripe-backed subscriptions.

Changed

• Engine moved from jscodeshift to ts-morph for full TypeScript AST fidelity.

• First public release of the Windows desktop converter.
• Core transforms: .js→.ts renaming, require→import, module.exports→export, JSDoc @param/@returns extraction.