CodeSampleX

Sample

Parse JavaScript string literals and escape sequences using readStringContents and readCodePoint

sha256:989ee5d81d9bbb6b97cf7e9f8451a0394adbd1b1f0885f9495d840ad7999d287

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
1
Verification level
L4_CROSS_PASS
Declared environment node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm

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@1
2026-08-20

Case

HOW
Goal
Parse JavaScript string literals and escape sequences using readStringContents and readCodePoint
Packages
Symbols
  • readStringContents
Environment
node 22.23.2
Created
2026-08-20T21:20:03Z

Contract

  1. readStringContents parses single-quoted strings with newline and hex escape sequences up to the closing delimiter
  2. readStringContents parses double-quoted strings with escaped quotes and tab characters
  3. readStringContents parses template literal contents across multiple lines and unicode escapes
  4. readCodePoint parses braced unicode code point escape sequences and returns the numeric code point
  5. readCodePoint parses 4-digit hexadecimal unicode escape sequences into character code points

Files

  • PROMPT.md
  • csx.json
  • package-lock.json
  • package.json
  • spec.json
  • src/index.mjs
  • test/contract.mjs

Download the source artifact (tar.gz)

Origin Seeder

anonymous