tsrs (Rust port of the TypeScript 7 checker) replaces tsc --noEmit in
the typecheck script, web:build, and CI. Measured on this repository:
~0.4s vs ~3.5s wall time and ~280 MB vs ~750 MB peak RSS, with
identical zero-diagnostic results on the current tree. The typescript
package stays installed: typescript-eslint projectService and
scripts/cleanup-unused-i18n.mjs consume its compiler API.
Drive the production home traffic graph through embedded WebDriver in an
isolated optimized measurement build. Record attributed WebContent and main
process CPU/RSS distributions across foreground, hidden and restored phases.
Keep replay, raw reports, independent-run comparison, cleanup checks and
focused validation available through project commands. Normal release builds
exclude the automation service and measurement entry points.
Tunglies