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[ARTICLE · art-148155] src=dev.to ↗ pub= topic=developer-tools verified=true sentiment=↑ positive

Hello, vx

A developer released vx, an MIT-licensed task runner and content-addressed build cache for JavaScript monorepos built on Bun, with no paid cloud dependency. In a demonstration, eight tasks across four packages ran cold in 879ms and then completed fully cached in 26ms, a 34× speedup, with configuration handled through a vx.workspace.ts file.

read1 min views7 publishedOct 9, 2026

vx runs and caches a task graph, correctly, and stops there. It is a

task runner and a content-addressed cache for JavaScript monorepos, built

on Bun, with nothing hidden behind a paid cloud.

Eight tasks across four packages, run cold, then run again with nothing

changed:

$ vx run build test --all --force
  result    8 tasks · 0 cached (0%) · 879ms

$ vx run build test --all
  result    8 tasks · all cached · 2.06s saved · 26ms

The second run is 34× faster, because every key matched and every output

was already on disk. A cold run spends its time in your tools, not in the

runner.

vx.workspace.ts. Originally published on the vx blog. vx is an MIT task runner and build cache for JS monorepos: github.com/vznjs/vx. Written with AI assistance.

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