Sample
commander 15.0.0: Configure Option.preset alongside Option.default to prevent bare optional option flags from resolving to boolean true and bypassing custom argParser
Verified sample for npm commander 15.0.0: Configure Option.preset alongside Option.default to prevent bare optional option flags from resolving to boolean…
sha256:9ed29f29e55e4074676913ca3bb9009038881ff559b26efc27a6df45e0d7e648
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 |
2026-08-16 |
| 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 Option.preset alongside Option.default to prevent bare optional option flags from resolving to boolean true and bypassing custom argParser
- Packages
- Symbols
-
- Option.preset
- Option.default
- Option.argParser
- Option.conflicts
- Command.getOptionValueSource
- Command
- Option
- Environment
- node
- Created
- 2026-08-16T16:15:21Z
Contract
- Passing an option with optional argument without a value sets its parsed option value to boolean true and skips argParser unless Option.preset() is configured.
- assert omitted option with optional argument evaluates to Option.default() with source 'default'
- assert Option.preset() supplies the fallback value and invokes argParser when an optional argument flag is passed bare
- assert explicit CLI argument overrides Option.preset() with source 'cli'
- assert getOptionValueSource() distinguishes between 'cli', 'env', and 'default' sources
- assert Option.conflicts() rejects mutually exclusive flags with CommanderError code commander.conflictingOption
Files
- NOTES.md
- csx.json
- package-lock.json
- package.json
- src/index.mjs
- test/contract.mjs