Sample
jest 29.7.0: Jest requires setupFilesAfterEnv rather than setupFiles to register test framework lifecycle hooks and custom matchers because setupFiles runs before the test framework is installed
Verified sample for npm jest 29.7.0: Jest requires setupFilesAfterEnv rather than setupFiles to register test framework lifecycle hooks and custom matchers…
sha256:54d7455a1f1a8164920b91e0674efab285e8709ffd5ea541dc3da0dd5f541e20
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
- Jest requires setupFilesAfterEnv rather than setupFiles to register test framework lifecycle hooks and custom matchers because setupFiles runs before the test framework is installed
- Packages
- Symbols
-
- setupFiles
- setupFilesAfterEnv
- normalize
- Environment
- node
- Created
- 2026-08-17T01:53:57Z
Contract
- assert running Jest with test framework hooks in setupFiles fails with ReferenceError: beforeEach is not defined because the framework environment is not yet initialized
- assert setupFiles executes in the isolated test environment before the test framework and can configure environment globals
- assert setupFilesAfterEnv executes after test framework initialization, allowing beforeEach hooks and expect.extend matchers to run across test suites
- assert jest-config normalize correctly resolves <rootDir> tokens for both setupFiles and setupFilesAfterEnv into absolute paths
Files
- NOTES.md
- csx.json
- fixtures/jest.invalid-setup.json
- fixtures/jest.valid.json
- fixtures/sample.test.js
- fixtures/setup-after-env.js
- fixtures/setup-env.js
- fixtures/setup-hook-error.js
- package-lock.json
- package.json
- test/contract.mjs