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Bump vitest from 3.2.4 to 4.1.0 #377

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Bump vitest from 3.2.4 to 4.1.0 #377

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2 changes: 1 addition & 1 deletion package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -83,7 +83,7 @@
"pino-pretty": "^13.1.1",
"rimraf": "^6.0.1",
"typescript": "^5.9.3",
"vitest": "^3.2.4",
"vitest": "^4.1.0",
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@coderabbitai coderabbitai bot Mar 16, 2026

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⚠️ Potential issue | 🟠 Major

🧩 Analysis chain

🏁 Script executed:

#!/bin/bash
set -euo pipefail

python3 - <<'PY'
import json, urllib.request

def get_pkg(name, version):
    url = f"https://registry.npmjs.org/{name}/{version}"
    with urllib.request.urlopen(url) as r:
        return json.load(r)

cov = get_pkg("@vitest/coverage-v8", "3.2.4")
vit = get_pkg("vitest", "4.1.0")

print("@vitest/coverage-v8@3.2.4 peerDependencies:")
print(json.dumps(cov.get("peerDependencies", {}), indent=2))
print("\nvitest@4.1.0 version:", vit.get("version"))
PY

Repository: lokalise/fastify-extras

Length of output: 2685

🏁 Script executed:

cat -n package.json | sed -n '70,90p'

Repository: lokalise/fastify-extras

Length of output: 861

🌐 Web query:

vitest 4.1.0 @vitest/coverage-v8 compatibility peer dependencies

💡 Result:

For Vitest 4.1.0, the @vitest/coverage-v8 package you should use is @vitest/coverage-v8@4.1.0, because it declares exact-version peer deps:

  • @vitest/coverage-v8@4.1.0 peerDependencies:
    • vitest: 4.1.0
    • @vitest/browser: 4.1.0 (optional)[1]

So the compatible pairing is:

  • vitest@4.1.0 + @vitest/coverage-v8@4.1.0[1][2]

Install:

npm i -D vitest@4.1.0 `@vitest/coverage-v8`@4.1.0

Upgrade @vitest/coverage-v8 to major version 4 to match Vitest 4.

Line 86 upgrades vitest to ^4.1.0, but Line 74 keeps @vitest/coverage-v8 at ^3.2.4. The coverage plugin has exact peer dependency on vitest@4.1.0, making this combination incompatible and breaking coverage runs.

Suggested fix 
-        "@vitest/coverage-v8": "^3.2.4",
+        "@vitest/coverage-v8": "^4.1.0",
🤖 Prompt for AI Agents 
Verify each finding against the current code and only fix it if needed.

In `@package.json` at line 86, The package.json currently upgrades vitest to
^4.1.0 but leaves `@vitest/coverage-v8` at ^3.2.4; update the `@vitest/coverage-v8`
devDependency to a v4-compatible version (e.g. ^4.0.0 or the latest 4.x) so it
matches Vitest 4's peer dependency, then reinstall dependencies (npm/yarn/pnpm)
and run your test coverage command to verify coverage runs; target the
"@vitest/coverage-v8" entry in package.json and ensure the version string is
updated to a 4.x range.

"zod": "^4.1.12"
},
"engines": {
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