Sample
Intercept and customize subresource loading in JSDOM using ResourceLoader
sha256:729cd83d1c1f9d920bc16f81b26620669e5f6eb3dd0f9c878ce052f183c7f713
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
- 1
- Signing keys that built it
- 1
Declared environment
node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5… |
2026-08-28 |
Case
HOW- Goal
- Intercept and customize subresource loading in JSDOM using ResourceLoader
- Packages
- Symbols
-
- JSDOM
- ResourceLoader
- Environment
- node 22.23.2
- Created
- 2026-08-28T06:56:19Z
Contract
- ResourceLoader constructor accepts configuration options including userAgent, proxy, and strictSSL.
- Instantiating JSDOM without configuring resources suppresses all external subresource fetching for scripts and stylesheets.
- Attaching a custom ResourceLoader subclass intercepts subresource fetch requests and passes the requesting element reference in fetch options.
- Returning a Buffer promise from ResourceLoader fetch resolves synthetic external script content and executes it within the JSDOM window context under runScripts dangerously.
- Returning a Buffer promise from ResourceLoader fetch parses external stylesheets into document.styleSheets rules.
- Returning null from ResourceLoader fetch silently blocks subresource fetching without throwing exceptions, emitting jsdomError, or firing element event handlers.
- Rejecting the promise returned from ResourceLoader fetch triggers element onerror handlers and emits a jsdomError event to VirtualConsole.
Files
- NOTES.md
- PROMPT.md
- csx.json
- index.mjs
- package-lock.json
- package.json
- spec.json
- test/contract.mjs
Origin Seeder
anonymous