CodeSampleX

Sample

type detection for primitives, built-ins, and complex JavaScript objects using type-detect

sha256:cdbd7ba6fa2e2fa4e23268791e70644ce520d8ed87a8521630dbf86f26941c24

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 linux 24 · ubuntu · glibc 2.39 x64 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@1node:22-alpine@sha256:c610fcdfb1d5…		 2026-08-27

Case

HOW
Goal
type detection for primitives, built-ins, and complex JavaScript objects using type-detect
Packages
Symbols
  • typeDetect
Created
2026-08-27T21:21:10Z

Contract

  1. typeDetect(null) === "null"
  2. typeDetect(undefined) === "undefined"
  3. typeDetect(42) === "number"
  4. typeDetect(NaN) === "number"
  5. typeDetect("hello") === "string"
  6. typeDetect(true) === "boolean"
  7. typeDetect(Symbol("test")) === "symbol"
  8. typeDetect(100n) === "bigint"
  9. typeDetect([]) === "Array"
  10. typeDetect({}) === "Object"
  11. typeDetect(new Map()) === "Map"
  12. typeDetect(new Set()) === "Set"
  13. typeDetect(new WeakMap()) === "WeakMap"
  14. typeDetect(new WeakSet()) === "WeakSet"
  15. typeDetect(Promise.resolve()) === "Promise"
  16. typeDetect(/regex/g) === "RegExp"
  17. typeDetect(new Date()) === "Date"
  18. typeDetect(new Error("err")) === "Error"
  19. typeDetect(new Uint8Array(8)) === "Uint8Array"
  20. typeDetect(new ArrayBuffer(16)) === "ArrayBuffer"
  21. typeDetect(new DataView(new ArrayBuffer(16))) === "DataView"
  22. typeDetect(() => {}) === "function"
  23. typeDetect(function named() {}) === "function"

Files

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

Download the source artifact (tar.gz)

Origin Seeder

anonymous