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@effect/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
13,150

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%v0.30: 68% of reporting projects through 30 Oct 2026v4: 32% of reporting projects through 30 Oct 2026
0%50%100%v0.30: 68% of reporting projects through 30 Oct 2026v4: 32% of reporting projects through 30 Oct 2026
0%50%100%v0.30: 68% of reporting projects through 30 Oct 2026v4: 32% of reporting projects through 30 Oct 2026
0%50%100%v0.30: 68% of reporting projects through 30 Oct 2026v4: 32% of reporting projects through 30 Oct 2026
0%50%100%v0.30: 68% of reporting projects through 30 Oct 2026v4: 32% of reporting projects through 30 Oct 2026
0%50%100%v0.30: 68% of reporting projects through 30 Oct 2026v4: 32% of reporting projects through 30 Oct 2026
0%50%100%v0.30: 68% of reporting projects through 30 Oct 2026v4: 32% of reporting projects through 30 Oct 2026
0%50%100%v0.30: 68% of reporting projects through 30 Oct 2026v4: 32% of reporting projects through 30 Oct 2026
  • v0.3068%
  • v432%

Among 13,150 stacks projects using @effect/vitest.

Data table
MajorShare
0.3068%
432%

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%@effect/vitest v0.30: share of reporting projects@effect/vitest v4: share of reporting projects@effect/vitest v0.30: share of reporting projects@effect/vitest v4: share of reporting projectsv0.30 68%v4 32%
Aug 1Sep 1Oct 10%50%100%@effect/vitest v0.30: share of reporting projects@effect/vitest v4: share of reporting projects@effect/vitest v0.30: share of reporting projects@effect/vitest v4: share of reporting projectsv0.30 68%v4 32%
Aug 1Sep 1Oct 10%50%100%@effect/vitest v0.30: share of reporting projects@effect/vitest v4: share of reporting projects@effect/vitest v0.30: share of reporting projects@effect/vitest v4: share of reporting projectsv0.30 68%v4 32%
Aug 1Sep 1Oct 10%50%100%@effect/vitest v0.30: share of reporting projects@effect/vitest v4: share of reporting projects@effect/vitest v0.30: share of reporting projects@effect/vitest v4: share of reporting projectsv0.30 68%v4 32%
Aug 1Sep 1Oct 10%50%100%@effect/vitest v0.30: share of reporting projects@effect/vitest v4: share of reporting projects@effect/vitest v0.30: share of reporting projects@effect/vitest v4: share of reporting projectsv0.30 68%v4 32%
Aug 1Sep 1Oct 10%50%100%@effect/vitest v0.30: share of reporting projects@effect/vitest v4: share of reporting projects@effect/vitest v0.30: share of reporting projects@effect/vitest v4: share of reporting projectsv0.30 68%v4 32%
Aug 1Sep 1Oct 10%50%100%@effect/vitest v0.30: share of reporting projects@effect/vitest v4: share of reporting projects@effect/vitest v0.30: share of reporting projects@effect/vitest v4: share of reporting projectsv0.30 68%v4 32%
Aug 1Sep 1Oct 10%50%100%@effect/vitest v0.30: share of reporting projects@effect/vitest v4: share of reporting projects@effect/vitest v0.30: share of reporting projects@effect/vitest v4: share of reporting projectsv0.30 68%v4 32%

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

Data table
ThroughMajorShare
5 Jul 20260.3084%
5 Jul 2026416%
12 Jul 20260.3078%
12 Jul 2026422%
19 Jul 20260.3079%
19 Jul 2026421%
26 Jul 20260.3079%
26 Jul 2026421%
2 Aug 20260.3079%
2 Aug 2026421%
9 Aug 20260.3076%
9 Aug 2026424%
16 Aug 20260.3074%
16 Aug 2026426%
23 Aug 20260.3071%
23 Aug 2026429%
30 Aug 20260.3070%
30 Aug 2026430%
6 Sept 20260.3069%
6 Sept 2026431%
13 Sept 20260.3069%
13 Sept 2026431%
20 Sept 20260.3068%
20 Sept 2026432%
27 Sept 20260.3068%
27 Sept 2026432%
4 Oct 20260.3068%
4 Oct 2026432%
11 Oct 20260.3067%
11 Oct 2026433%
18 Oct 20260.3068%
18 Oct 2026432%
25 Oct 20260.3068%
25 Oct 2026432%

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
@effect/vitest0.30 → 4265

Stacks using this dependency

StackProjectsShare of reporting projectsWith green rateWithout green rate
astro-fullstack2088%hidden: too few projectshidden: too few projects
react-router1092%hidden: too few projectshidden: too few projects
typescript-api4,77592%hidden: too few projectshidden: too few projects
typescript-cli4,43092%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/react3.2×
@fontsource-variable/inter3.2×
@fontsource-variable/jetbrains-mono3.2×
@openrouter/ai-sdk-provider3.2×
@openrouter/sdk3.2×

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

Data table
DependencyLift
@ai-sdk/react3.2×
@fontsource-variable/inter3.2×
@fontsource-variable/jetbrains-mono3.2×
@openrouter/ai-sdk-provider3.2×
@openrouter/sdk3.2×

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