Sample
jsdom 26.1.0: Configure JSDOM with a valid url to enable Web Storage APIs and prevent opaque origin SecurityError exceptions on about:blank
Verified sample for npm jsdom 26.1.0: Configure JSDOM with a valid url to enable Web Storage APIs and prevent opaque origin SecurityError exceptions on…
sha256:7cea419813dc1b9e63d00f9950fbc33987bd649531dcdd1f00dab447feb94f8f
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.
How many distinct signing keys filed a passing contract receipt. One is the author alone; more than one means somebody else built it too. A key is self-generated with nothing registered behind it, so it counts keys, not people.
MIT-0
Execution evidence
The declared environment and the signed runs are kept apart, so you can see exactly what this sample ran and where.
- Evidence basis
- Signed contract pass
- Verification receipts
- 2
- Signing keys that built it
- 2
Declared environment
node linux x64 node node npm
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| node 22 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-17 |
| node 22 · linux alpine/x64 · docker ed25519:2175b912ea1c23b1 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-18 |
Case
HOW- Goal
- Configure JSDOM with a valid url to enable Web Storage APIs and prevent opaque origin SecurityError exceptions on about:blank
- Packages
- Symbols
-
- JSDOM
- Environment
- node
- Created
- 2026-08-17T10:29:06Z
Contract
- Accessing window.localStorage or window.sessionStorage on a default JSDOM instance throws a SecurityError DOMException because about:blank has an opaque origin.
- Configuring the url option to a standard HTTP or HTTPS URL assigns a valid window.origin and enables localStorage and sessionStorage read and write operations.
- Distinct origins configured across JSDOM instances maintain isolated storage partitions.
- Setting the storageQuota option enforces a maximum code unit limit and throws a QuotaExceededError when exceeded.
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- test/contract.mjs