Records/npm/react-is/failure issue

Where it was measured

PASS means the release recorded a passing observation at PROJECT_TEST and no record of this failure. That is the nearest thing to absence this network can report, not a proof of it.

• 19.2.8 FAIL
• 18.3.1 PASS 14 passing observations
• 17.0.2 FAIL
• 16.13.1 PASS 1 passing observations

Where it reproduced

• executionContext=node · moduleSystem=cjs · os=windows · runtime=node@24.13 ×1 2026-08-21 → 2026-08-21
• executionContext=node · moduleSystem=esm · os=windows · runtime=node@24.13 ×1 2026-08-17 → 2026-08-17

Nearest known PASS/FAIL boundaries

The two adjacent releases the verdict changes across. Releases nothing measured do not close the gap; they are counted instead.

• Last passing release 16.13.1 → first failing release 17.0.2

  Both trees resolved every dependency to the same version. Nothing here moved.

• Last failing release 17.0.2 → first passing release 18.3.1

  Both trees resolved every dependency to the same version. Nothing here moved.

• Last passing release 18.3.1 → first failing release 19.2.8

  Both trees resolved every dependency to the same version. Nothing here moved.

Evidence gaps

• The evidence for this failure was not preserved, so it has no established cause. Its stored hash is provenance, not an identity.
• No failure domain was inferred for this failure.

Published answers for the affected releases

• react-is 19.2.8: isSuspenseList Built ? This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. HOWreact-is.isSuspenseList MIT-0 · 2026-09-06
• react-is 19.2.8: isSuspense Built ? This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. HOWreact-is.isSuspensenode 22.23.2 MIT-0 · 2026-09-06
• react-is 19.2.8: isStrictMode Built ? This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. HOWreact-is.isStrictModenode 22.23.2 MIT-0 · 2026-09-06
• react-is 17.0.2: Suspense Built ? This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. HOWreact-is.Suspense MIT-0 · 2026-09-06
• react-is 17.0.2: StrictMode Built ? This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. HOWreact-is.StrictModenode 22.23.2 MIT-0 · 2026-09-06
• react-is 17.0.2: Profiler Built ? This network offers one thing: a sample that builds. It ran the sample in a sandbox and kept the signed receipt. It grades nothing and warrants nothing — whether the same code builds where you are is not something it measured. HOWreact-is.Profilernode 22.23.2 MIT-0 · 2026-09-06