Developer Theo built the open source drop-in replacement using Claude Opus 5.5 AI agents after a prior $400,000 expenditure on Codex tokens failed to produce results. Theo spent approximately $20,000 on Opus tokens to complete the Rust port in two weeks and noted that he has not personally read any of the generated code. He stated that Claude is responsible for the ongoing maintenance of the project, which has already been integrated into T3 Code's nightly builds after initial tests showed a 3x reduction in typechecking time.
Tuesday, October 20, 2026
Story
ts-rust v0.6.0 Hits 70% Speed Increase to Close Bun Performance Gap
Tech7 days ago
A new version of the TypeScript compiler rewrite provides an overall speed boost of 30% over previous builds, including a '--fast' mode that reaches performance gains of 70% by utilizing more RAM. The updated ts-rust tool maintains 100% compatibility with the upstream TypeScript compiler, a feature lacking in its competitor, bun check. For specific setups using Effect v4 diagnostics, such as the T3 Code environment, the tool's typechecking speed is up to 4.3x faster than both bun and tsc 7.
Looking for more context or analysis?
Tilt chat provides reliable, tailored insights, alerts, and automations.