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vitest

Versions and outcomes among JavaScript & TypeScript stacks projects that reported this dependency.

Stacks projects · 28 days through 30 Oct 2026.

Only allowlisted dependencies appear here, and statistics cover reporting stacks projects. Missing packages may be outside the allowlist; their absence does not mean they are unused.

Dependency usage

Reporting projects
33,050

A package may be present because its starting recipe includes it. Reporting counts do not show whether it was independently chosen or kept after setup.

Major shares

The major version in each reporting project's latest report.

0%50%100%v4: 67% of reporting projects through 30 Oct 2026v5: 33% of reporting projects through 30 Oct 2026
0%50%100%v4: 67% of reporting projects through 30 Oct 2026v5: 33% of reporting projects through 30 Oct 2026
0%50%100%v4: 67% of reporting projects through 30 Oct 2026v5: 33% of reporting projects through 30 Oct 2026
0%50%100%v4: 67% of reporting projects through 30 Oct 2026v5: 33% of reporting projects through 30 Oct 2026
0%50%100%v4: 67% of reporting projects through 30 Oct 2026v5: 33% of reporting projects through 30 Oct 2026
0%50%100%v4: 67% of reporting projects through 30 Oct 2026v5: 33% of reporting projects through 30 Oct 2026
0%50%100%v4: 67% of reporting projects through 30 Oct 2026v5: 33% of reporting projects through 30 Oct 2026
0%50%100%v4: 67% of reporting projects through 30 Oct 2026v5: 33% of reporting projects through 30 Oct 2026
  • v467%
  • v533%

Among 33,050 stacks projects using vitest.

Data table
MajorShare
467%
533%

Major versions over time

A weekly view of the major shares in each 28-day window. A change in version share is not a count of upgrades.

Aug 1Sep 1Oct 10%50%100%vitest v4: share of reporting projectsvitest v5: share of reporting projectsvitest v4: share of reporting projectsvitest v5: share of reporting projectsv4 67%v5 33%
Aug 1Sep 1Oct 10%50%100%vitest v4: share of reporting projectsvitest v5: share of reporting projectsvitest v4: share of reporting projectsvitest v5: share of reporting projectsv4 67%v5 33%
Aug 1Sep 1Oct 10%50%100%vitest v4: share of reporting projectsvitest v5: share of reporting projectsvitest v4: share of reporting projectsvitest v5: share of reporting projectsv4 67%v5 33%
Aug 1Sep 1Oct 10%50%100%vitest v4: share of reporting projectsvitest v5: share of reporting projectsvitest v4: share of reporting projectsvitest v5: share of reporting projectsv4 67%v5 33%
Aug 1Sep 1Oct 10%50%100%vitest v4: share of reporting projectsvitest v5: share of reporting projectsvitest v4: share of reporting projectsvitest v5: share of reporting projectsv4 67%v5 33%
Aug 1Sep 1Oct 10%50%100%vitest v4: share of reporting projectsvitest v5: share of reporting projectsvitest v4: share of reporting projectsvitest v5: share of reporting projectsv4 67%v5 33%
Aug 1Sep 1Oct 10%50%100%vitest v4: share of reporting projectsvitest v5: share of reporting projectsvitest v4: share of reporting projectsvitest v5: share of reporting projectsv4 67%v5 33%
Aug 1Sep 1Oct 10%50%100%vitest v4: share of reporting projectsvitest v5: share of reporting projectsvitest v4: share of reporting projectsvitest v5: share of reporting projectsv4 67%v5 33%

Stacks projects · 28 days through 30 Oct 2026. Counts rounded to 5.

Data table
ThroughMajorShare
5 Jul 2026482%
5 Jul 2026518%
12 Jul 2026480%
12 Jul 2026520%
19 Jul 2026479%
19 Jul 2026521%
26 Jul 2026480%
26 Jul 2026520%
2 Aug 2026479%
2 Aug 2026521%
9 Aug 2026477%
9 Aug 2026523%
16 Aug 2026474%
16 Aug 2026526%
23 Aug 2026471%
23 Aug 2026529%
30 Aug 2026469%
30 Aug 2026531%
6 Sept 2026468%
6 Sept 2026532%
13 Sept 2026468%
13 Sept 2026532%
20 Sept 2026468%
20 Sept 2026532%
27 Sept 2026467%
27 Sept 2026533%
4 Oct 2026468%
4 Oct 2026532%
11 Oct 2026467%
11 Oct 2026533%
18 Oct 2026467%
18 Oct 2026533%
25 Oct 2026467%
25 Oct 2026533%

Reported major transitions

Projects observed on one major version and later another in the reported window. These counts cover projects with repeat reports; they do not show how quickly all users upgrade.

DependencyTransitionProjects
vitest4 → 53,210

Stacks using this dependency

StackProjectsShare of reporting projectsWith green rateWithout green rate
astro-blog1,335100%hidden: too few projectshidden: too few projects
astro-fullstack25100%hidden: too few projectshidden: too few projects
cloudflare-react-router20100%hidden: too few projectshidden: too few projects
nextjs2,060100%hidden: too few projectshidden: too few projects
python-react2,710100%hidden: too few projectshidden: too few projects
react-router10100%hidden: too few projectshidden: too few projects
sveltekit5,865100%hidden: too few projectshidden: too few projects
tauri-react5100%hidden: too few projectshidden: too few projects
typescript-api5,190100%hidden: too few projectshidden: too few projects
typescript-cli4,790100%hidden: too few projectshidden: too few projects

This compares projects; it isn't an effect of the dependency.

Often used with

Dependencies that occur together more often than their baseline frequency.

@ai-sdk/react1.3×
@astrojs/check1.3×
@astrojs/mdx1.3×
@astrojs/react1.3×
@astrojs/rss1.3×

Stacks projects · 28 days through 30 Oct 2026. Counts rounded to 5.

Data table
DependencyLift
@ai-sdk/react1.3×
@astrojs/check1.3×
@astrojs/mdx1.3×
@astrojs/react1.3×
@astrojs/rss1.3×

Computed 31 Oct 2026, through 30 Oct 2026. Numbers describe stacks projects, not the ecosystem.