TypeScript Generator
Commercial use OK
380+ models
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No sign-up needed
Model:
+ GPT-5, Claude, Gemini
Describe what you need and get strict TypeScript 5.x — exact generics, discriminated unions, satisfies operator, conditional types, no implicit any. Self-hosted Qwen 3 Coder is free under the daily pool; premium Claude Sonnet / GPT-5 handle complex generic puzzles and large multi-file refactors better.
Explanation
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Result
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Generate TypeScript code with free AI. Type-safe code from natural language.
How to Use TypeScript Generator
1
Enter your input
Type text, upload a file, or describe what you want. No account needed.
2
Click generate
Our AI processes your request in seconds using the best open-source models.
3
Download & share
Download, copy, or share your result. Free for personal and commercial use.
Use this tool via API
Automate this tool from your own code. OpenAI-compatible REST endpoint, Bearer-token auth, no extra SDK required. Token costs match the web interface.
curl -X POST https://api.free.ai/v1/chat/ \
-H "Authorization: Bearer sk-free-..." \
-H "Content-Type: application/json" \
-d '{"model": "qwen-coder", "messages": [{"role": "user", "content": "Write a Python function that reverses a string."}]}'TypeScript Generator — FAQ
Strict TypeScript 5.x that compiles under tsc --strict --noUncheckedIndexedAccess with zero errors and zero any. 8 style presets (Strict library / React + hooks / Next.js 14 app router / Node 20 ESM / Express + tRPC / Deno / Library / Vitest). Discriminated unions over flag fields, satisfies over assertions, branded types where identity matters, generics fully constrained.
Yes - a typical hook or tRPC procedure costs ~1,500 tokens on Qwen 3 Coder, inside the 2,500 anonymous / 10,000 signed-up daily pool. Premium Claude Sonnet 4 / GPT-5 available per-call for the gnarly generic puzzles where the free model occasionally guesses wrong.
Copilot ($10 individual / $19 business / $39 enterprise) finishes the line you are typing - strong on common idioms, weak on complex generics. Cursor ($20/mo) has better whole-file context. Tabnine ($12/mo Dev) is privacy-first. Codeium (free tier + $15/mo Pro) and Cline / Continue (free open-source) round out the IDE space. Our tool is web-based one-shot - describe and get a complete typed module.
When the No any / no unsafe casts toggle is on, the system prompt forbids any and as unknown as T. Unknown inputs use unknown and get narrowed via type guards or zod-style runtime validation. The free Qwen tier slips occasionally - premium Claude / GPT-5 catch more.
Yes - pick the Next.js 14 preset. Output is server-component-by-default with use client only where interactivity needs it. Server actions for mutations, route handlers for APIs, async page components, proper loading.tsx + error.tsx scaffolding when you ask for a route group.
Yes - both are first-class in the system prompt. Discriminated unions replace boolean flag spaghetti. satisfies keeps narrow types where as would widen them. as const over enum where const-assertion suffices.
Pick the Express + tRPC preset. Output defines createTRPCRouter, publicProcedure, protectedProcedure middleware. Inputs validated with z.object({...}).strict(), outputs typed end-to-end. Errors via TRPCError with proper codes (UNAUTHORIZED, BAD_REQUEST, etc.). Express adapter for HTTP serving.
T extends ... for bounded generics, T extends keyof U for key relations. Conditional types for distributive transforms. Mapped types for object derivations. Beyond that the free model can wobble - premium models nail higher-kinded patterns.
Yes - pick the Vitest tests + types preset, or toggle Include vitest tests on any other style. Output uses describe, it, expect, vi from vitest, type-safe vi.fn, vi.mock for module mocks, fake timers via vi.useFakeTimers().
Yes - pick the Deno preset. Web-standard APIs only (no node: imports), import allowed from URLs and JSR, permissions documented in a top comment, Deno.serve for HTTP, Deno.cron for scheduled tasks where applicable.
Review every output as you would a junior dev PR. The types are usually sound, but the model does not have your runtime constraints or full project context. For security-critical code run /code/review/ on the output, then /code/test/ to generate tests, then deploy.
Yes - POST to /v1/chat/ with the same system prompt this page builds. Good for IDE plugins, build-time code generation, or scaffolding CLIs. Bearer auth, rate-limited. Docs at /api/.
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