Sample
rollup 4.34.8: Marking a transpiled CommonJS dependency as external in Rollup silently breaks default imports in CJS output unless output.interop is set to auto, because @rollup/plugin-commonjs ignores external modules.
Verified sample for npm rollup 4.34.8: Marking a transpiled CommonJS dependency as external in Rollup silently breaks default imports in CJS output unless…
sha256:6bd9e4aeb00bbe86cb0245f6c6955ae8ec7421dba24da3b8401f6307646e0ad8
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 |
2026-08-15 |
| 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
- Marking a transpiled CommonJS dependency as external in Rollup silently breaks default imports in CJS output unless output.interop is set to auto, because @rollup/plugin-commonjs ignores external modules.
- Symbols
-
- rollup
- external
- output.interop
- @rollup/plugin-commonjs
- Environment
- node
- Created
- 2026-08-15T17:12:52Z
Contract
- assert @rollup/plugin-commonjs emits default import without helper synthesis for external CJS require in ESM output
- assert Rollup default interop leaves transpiled external CJS default export wrapped in __esModule object in CJS output
- assert output.interop 'auto' generates _interopDefault and properly unwraps default export at runtime
- assert Rollup preserves verbatim named ESM import for external CJS dependencies in ESM output
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- test/contract.mjs