# GitHub - pingdotgg/ts-rust: An experimental Rust port of the TypeScript 7 compiler (tsc) > OpenAI models ported TypeScript 7 compiler to Rust for $24k. - Title: GitHub - pingdotgg/ts-rust: An experimental Rust port of the… - Summary: OpenAI models ported TypeScript 7 compiler to Rust for $24k. OpenAI models created a Rust version of TypeScript 7 compiler that works with 120 open-source… - Keywords: ts-rust, typescript, rust, openai, gpt-5.6, gpt-6-astra, opus-5.5, effect, tsc-rs, bun, t3code, vscode - Source: GitHub — https://github.com/pingdotgg/ts-rust - Read time: 1 min - Topics: ts-rust, typescript, rust, openai, gpt-5.6, gpt-6-astra, opus-5.5, effect, tsc-rs, bun, t3code, vscode ## ts-rust ts-rust is an experimental Rust port of Microsoft's TypeScript compiler that works with 120 open-source projects. > ts-rust (aka tsc-rs) ## Cost to build It cost over $420,000 in tokens to port TypeScript 7 to Rust using OpenAI models, but the final version cost ~$24,047. > it cost over $420,000 in tokens to do it, but you could probably have done it for ~$20k ## Motivations The project aimed to test LLMs, create a fast TypeScript type checker, and build a compiler that works in WASM with high performance. > motivations test model capabilities make a fast typescript type checker make a ts checker that can work in wasm with high performance ## Model performance Opus 5.5 completed the port in 10 hours, writing over 1.3 million lines of Rust code with 84% compatibility. > it had a working v0 in 10 hours ## Installation Install with npm install -D tsc-rs and run npx tsc-rs -p tsconfig.json for a drop-in replacement. > npm install -D tsc-r. npx tsc-rs -p tsconfig.json ## Effect diagnostics tsc-rs includes Effect language service diagnostics built in, requiring no second compiler for Effect projects. > tsc-rs has the effect language service diagnostics built in (codes 377xxx) ## Compatibility tsc-rs has 100% compatibility with 120 open-source projects and passes all 181,711 Go tests. > it has 100% compatibility in every real world project we have tested ## Benchmark results tsc-rs is 7.1× faster than TypeScript 6 on average and 1.61× faster than TypeScript 7 on real-world apps. > geometric mean seven point one times ## Real-world apps tsc-rs runs faster than TypeScript 6 on VS Code, Sentry, Playwright, Excalidraw, TypeORM, and tRPC. > vs code sentry playwright excalidraw typeorm tRPC ## Known problems tsc-rs reports errors in monorepos and has memory issues during long edit sessions. > in some monorepos the source files of a workspace package are reachable both through node_modules and through a direct import ## Development The project uses Rust crates for the compiler and has tools for generating code and testing. > crates/ts_goport is the compiler ## Releases Releases are tagged with v and published to npm with GitHub releases. > push a tag v for example v0.1.0 ## License The project uses MIT license with TypeScript (Apache-2.0) and Go standard library (BSD-3-Clause). > mit the port keeps the licenses and notices of the code it ports typescript apache-2.0 and parts of the go standard library bsd-3-clause ## Key takeaway OpenAI models created a Rust version of TypeScript 7 compiler that works with 120 open-source projects.