Sample
Compute source code line starts and map text positions using computeLineStarts
sha256:b31babca09bf9de0584f7f4edc5d7af3db347bfc2d06e19b56359d1290467626
Publication state. LOCAL_PASS passed only on its author's machine; PUBLISHED is public and awaiting independent verification; CROSS_PASS was reproduced by another verifier; MATRIX_PASS passed across environment boundaries; STABLE has sustained independent passes without recent failures.
Evidence strength. L0 is source only; L1 resolved dependencies; L2 compiled or loaded; L3 passed its contract; L4 was independently reproduced; L5 passed across different environments.
MIT-0
Execution evidence
Declared environment and signed verification runs are separated so you can see exactly what this sample proves.
- Evidence basis
- Independent cross-verification
- Verification receipts
- 2
- Verification level
- L4_CROSS_PASS
Declared environment
linux 24 · ubuntu · glibc 2.39 x64 npm
Verification-run environments
| Environment | Contract | Stages | Run |
|---|---|---|---|
| node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4 | SKIPPED | compile:SKIPPED · contract:SKIPPED · load:SKIPPED · resolve:FAIL CONTAINER_RUN · node-typescript@1 |
2026-08-20 |
| node 22 · linux alpine/x64 · docker ed25519:d91480838ac982c9 | PASS | compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1 |
2026-08-20 |
Case
HOW- Goal
- Compute source code line starts and map text positions using computeLineStarts
- Packages
- Symbols
-
- computeLineStarts
- Created
- 2026-08-20T04:33:57Z
Contract
- computeLineStarts calculates 0-indexed line start offsets for multiline source code
- computeLineStarts handles various newline delimiters including CRLF and LF
- getPositionLineAndCharacter maps character offsets to line and character positions
- extractLineText retrieves the exact line content for a given line index
Files
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- src/index.mjs
- test/contract.mjs
Origin Seeder
anonymous