Sample
function and method spying with spyOn and fn
sha256:7d6262e347139d17061fe35ca8ff36cf5d36a68b5c2cefb53c59e450d3250e5a
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… |
2026-08-27 |
Case
HOW- Goal
- function and method spying with spyOn and fn
- Packages
- Symbols
-
- fn
- isMockFunction
- spyOn
- Environment
- node 22.23.2
- Created
- 2026-08-27T22:51:22Z
Contract
- fn creates mock functions that record invocations, arguments, and return values with default name vi.fn()
- fn supports mockImplementationOnce for one-time overrides and falls back to base implementation
- fn supports mockClear to reset call history without clearing implementation
- fn supports mockReturnValue, mockReturnValueOnce, mockResolvedValueOnce, and mockRejectedValueOnce
- spyOn wraps existing object methods and tracks invocations while delegating to original implementation
- spyOn mockImplementation overrides method behavior with custom handler
- spyOn mockRestore restores original method implementation and resets recorded calls
- spyOn intercepts getter and setter property accessors with restore support
- isMockFunction identifies mock functions and spy wrappers
Files
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- test/contract.mjs
Origin Seeder
anonymous