Skip to content
ZNTC

Performance Benchmarks

ZNTC compares transpile and bundle performance against esbuild, SWC, Bun, Rolldown, Rspack, and related tools.

Environment

Section titled “Environment”
  • Platform: darwin arm64
  • Baseline date: 2026-05-06
  • CLI: bench.ts, 5-run median, direct CLI binary execution without npx overhead
  • NAPI / WASM / CLI: napi-bench.ts, 3 warmups + 10-run median
  • Bundle perf: bundle-perf.ts, 5 warmups + 20-run median, CI-style same-run ZNTC/Rolldown/Rspack comparison
  • Pipeline: pipeline.ts, 5-run median, profile total

Lower values are faster. The number at the end of each bar is median wall time.

How to Run

Section titled “How to Run”
Terminal window
zig build -Doptimize=ReleaseFast
zig build napi
zig build wasm


bun run tests/benchmark/bench.ts
bun run tests/benchmark/napi-bench.ts
bun run tests/benchmark/bundle-perf.ts --no-fail --output bundle-perf.json
bun run tests/benchmark/pipeline.ts