CodeSampleX

Sample

Parse multi-environment configuration sections, load environment configurations, and query Node.js versions with browserslist

sha256:e798bc73a962540ec9f157a362f2aeef2714978ef9348da3dfef0b2a078ce2c6

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
1
Signing keys that built it
1
Declared environment node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

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@1node:22-alpine@sha256:c610fcdfb1d5…
2026-08-24

Case

HOW
Goal
Parse multi-environment configuration sections, load environment configurations, and query Node.js versions with browserslist
Packages
Symbols
  • browserslist.findConfig
  • browserslist.loadConfig
  • browserslist.nodeVersions
  • browserslist.parseConfig
Environment
node 22.23.2
Created
2026-08-24T20:19:22Z

Contract

  1. browserslist.parseConfig(configString) parses multi-environment config text into section maps, stripping comments and empty lines
  2. browserslist.parseConfig('') on empty or comment-only string returns an object with an empty defaults array
  3. browserslist.findConfig(dir) discovers .browserslistrc files and returns structured section mappings
  4. browserslist.findConfig(dir) discovers package.json browserslist array configurations and wraps them under defaults
  5. browserslist.findConfig(dir) returns undefined when no configuration file exists in the directory tree
  6. browserslist.loadConfig({ path, env }) selects queries for the specified environment, defaulting to production
  7. browserslist.loadConfig({ path, env }) falls back to the defaults section when an unknown environment is requested
  8. browserslist(null, { path, env }) resolves target browsers directly from discovered configuration files
  9. browserslist.nodeVersions exposes an array of all known Node.js release versions used for node query resolution

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous