node.js

tinypool vs piscina: 5.4 KB vs 10 KB Gzip

Klona vs structuredClone: 1.4M vs 225k Clones per Second

Tinyexec vs execa: 2.7 KB vs 37 KB Gzip

Picocolors vs Chalk: 1.0 KB vs 3.4 KB Gzip

Ajv vs Zod: 3.9M vs 1.1M Validations per Second

ajv 8.20.0 (+ajv-formats 3.0.1) vs zod 4.6.5 on the same nested user shape as zod-vs-valibot. Warm medians (2k warmup + 9x50k): Ajv validate ok 3,933,337 ops/s vs zod.safeParse 1,138,406 (~3.5x). Bad input: Ajv allErrors 4,094,452 vs Zod 435,537 (~9.4x). Setup: Ajv new+addFormats+compile median 6.47 ms vs Zod build 0.17 ms; break-even ~10k validations. Browser gzip: Ajv runtime 41 KB, Ajv standalone 1.8 KB, Zod classic 93 KB, zod/mini 6.8 KB. Fixture /workspace/bench-ajv-zod/.

Yarn Berry vs pnpm: 1.3s vs 0.24s Install

Yarn 4.9.2 (Berry PnP + node-modules linker) vs pnpm 12.9.1 on one 22-dependency React+Vite app. Isolated caches (Yarn enableGlobalCache false; pnpm --store-dir). Warm medians (5): Yarn PnP 1.307 s, Yarn nm 2.471 s, pnpm 0.240 s. Lock+empty medians 1.656 / 2.789 / 0.725 s. Clean disk: Yarn PnP 246 MB; Yarn nm modules 189 MB; pnpm hardlink project 167 MB. Fixture /workspace/bench-yarn-pnpm/. Distinct from pnpm-vs-npm-vs-bun (no Yarn).

mozjpeg vs libvips: 385ms vs 31ms Encode

mozjpeg cjpeg 3.3.1 (mozjpeg npm 8.0.0) vs libvips jpeg via sharp 0.35.5 (mozjpeg:false) on one 1920×1080 JPEG → q80. Warm medians (7 rounds after 1 warm-up): cjpeg 385 ms / 675,128 B vs libvips jpeg 31 ms / 675,714 B (~12×). Context: sharp mozjpeg:true 308 ms / 546,546 B. Fixture /workspace/bench-mozjpeg-libvips/. cjpeg timed with spawn + PPM read.

Squoosh vs Sharp: 483ms vs 291ms Encode

@jsquash/jpeg 1.6.0 (Squoosh mozjpeg WASM) vs sharp 0.35.5 mozjpeg on one 1920×1080 JPEG → q80 encode from pre-decoded RGBA. Warm medians (7 rounds after 1 warm-up): Squoosh WASM 483 ms / 675,247 B vs sharp mozjpeg 291 ms / 546,546 B (~1.7×). Context: sharp decode+encode mozjpeg 303 ms; sharp libvips jpeg from raw 23 ms / 675,714 B. Fixture /workspace/bench-squoosh-sharp/. @squoosh/lib 0.5.3 fails on Node 22.

Sharp vs imagemin: 305ms vs 399ms Encode

sharp 0.35.5 vs imagemin 9.0.1 + imagemin-mozjpeg 10.0.0 on one 1920×1080 JPEG → JPEG q80 (no resize). Warm medians (7 rounds after 1 warm-up): sharp 305 ms / 546,546 B vs imagemin-mozjpeg 399 ms / 675,128 B (~1.3×). Context: sharp resize 800 q80 median 115 ms / 142,435 B. Fixture /workspace/bench-sharp-imagemin/.

Sharp vs Jimp: 112ms vs 366ms Resize

sharp 0.35.5 vs Jimp 1.6.1 on one 1920×1080 JPEG → width 800 JPEG q80. Warm medians (7 rounds after 1 warm-up): sharp 112 ms / 142,435 B vs Jimp 366 ms / 269,590 B (~3.3×). Fixture /workspace/bench-sharp-jimp/.

bun test vs Vitest: 136ms vs 1.67s on 300 Tests

bun test 1.4.2 vs Vitest 5.0.3 on 300 TypeScript tests in 60 files: warm wall medians 136 ms vs 1,673 ms (~12x); Vitest --no-isolate 765 ms (~5.6x). A 5-file vitest-API check (vi.fn, vi.mock, fake timers, spyOn, it.each, snapshot) passed 7/7 under Bun.

Turbo vs Lage: 1.97s vs 3.01s Cold Build

Turbo 2.11.7 vs Lage 2.17.0 on a 4-package diamond npm workspace (250k-iter build scripts): cold wall medians 1,974 ms vs 3,007 ms (~1.5x); Turbo warm 4/4 cache hits ~0.50 s; Lage warm ~1.49 s. Lage required git init.