chore(deps-dev): update dependency jsdom to v30.1.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
jsdom	30.0.1 → 30.1.1

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Release Notes

jsdom/jsdom (jsdom)

v30.1.1

Compare Source

v30.1.0

Compare Source

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📦 Bundle Size Report

Metric	Current	Previous	Change	Status
Total (gzip)	222.55 kB	222.55 kB	0 B (0%)	🟢
Total (raw)	620.13 kB	620.13 kB	0 B (0%)	🟢
CSS (gzip)	21.94 kB	21.94 kB	0 B (0%)	🟢
CSS (raw)	114.43 kB	114.43 kB	0 B (0%)	🟢

Size Limits

• ✅ Total gzipped: 222.55 kB / 350 kB (63.6%)
• ✅ Total raw: 620.13 kB / 850 kB (73.0%)
• ✅ CSS gzipped: 21.94 kB / 25 kB (87.8%)

Largest Files (Top 5)

1. index.esm-wIkXrqU6.js - 11.4 kB (0 B (0%))
2. styles.css - 10.97 kB (0 B (0%))
3. index.css - 10.97 kB (0 B (0%))
4. internals-DgoSOTWr.js - 6.14 kB (0 B (0%))
5. hooks-CizbeAFF.js - 5.81 kB (0 B (0%))

View All Files (282 total)

File	Size (gzip)	Change
index.esm-wIkXrqU6.js	11.4 kB	0 B (0%)
styles.css	10.97 kB	0 B (0%)
index.css	10.97 kB	0 B (0%)
internals-DgoSOTWr.js	6.14 kB	0 B (0%)
hooks-CizbeAFF.js	5.81 kB	0 B (0%)
sdk.gen-hikpofx9.js	5.48 kB	0 B (0%)
index.js	5.45 kB	0 B (0%)
flows/Onboarding/hooks.js	4.43 kB	0 B (0%)
utils-qfe-oQBs.js	4.07 kB	0 B (0%)
FieldSetField-Bds5UIuj.js	4.03 kB	0 B (0%)

✅ Bundle size check passed

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[gabrielseco]

Investigated the test failures. jsdom 30.1.1 introduces *one test bug. Our component code is fine in both cases.

1. ContractorOnboarding UK/IR35 upload: Cannot read properties of undefined (reading '_buffer') (1 test)

vitest's jsdom environment converts jsdom Blob/FormData request bodies to Node ones by reading jsdom's hidden Symbol(impl) property. jsdom 30.1.0 moved that data to a private #impl field, so blob[implSymbol]._buffer throws. The /v1/documents upload request is never built, and uploadSpy is never called.

This is a known upstream bug: vitest-dev/vitest#11336. The issue is now closed: the fix (vitest-dev/vitest#11379, "support Blob on jsdom 30.1") was merged to main on 2026-09-28, but it is not released yet. The latest release is 5.0.2 (2026-09-25), which predates the fix. I confirmed 5.0.2 still fails this test against jsdom 30.1.1. A v4 backport is open (vitest-dev/vitest#11384). There's no reasonable fix on our side.

Suggestion

Hold this PR until a vitest release that includes vitest#11379 (i.e. after 5.0.2) is out, then bump vitest together with jsdom.

[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

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[cursor]

jsdom upgrade breaks file upload tests

Medium Severity

The jsdom 30.1.1 upgrade hides Blob data behind a private #impl field. Vitest still converts jsdom FormData bodies via Symbol(impl)._buffer, so the ContractorOnboarding IR35 /v1/documents upload test throws instead of completing the request.

 

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