Sample
verify pkg:npm/prelude-ls@1.2.1
sha256:a8fd21df6ff830d040784c0e6ac9fa075249234392e4feaeee07f5e617e50132
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
- verify pkg:npm/prelude-ls@1.2.1
- Packages
- Environment
- node 22.23.2
- Created
- 2026-08-20T21:57:16Z
Contract
- map transforms elements in an array by applying a unary mapping function
- filter keeps elements satisfying a predicate and reject excludes elements satisfying a predicate
- partition splits an array into a pair of arrays of elements that pass and fail a predicate
- foldl reduces elements from the left with an accumulator and initial value, while foldr reduces from the right
- sum computes the arithmetic sum of numbers and product computes their product
- take extracts the first n elements and drop removes the first n elements from an array
- splitAt partitions an array at a specified index into a tuple of two sub-arrays
- takeWhile takes elements while a predicate holds true and dropWhile drops elements while a predicate holds true
- head returns the first element, tail returns all except the first, last returns the final element, and initial returns all except the last
- unique removes duplicate elements, intersection finds common elements, difference removes elements present in another list, and union merges lists without duplicates
- zip pairs corresponding elements from two lists and zipWith combines them using a binary function
- groupBy groups elements into an object keyed by the result of a grouping function and sortBy sorts elements by an extracted key
- pairsToObj constructs an object from key-value pairs and objToPairs extracts key-value pairs from an object
- capitalize, camelize, and dasherize format string casing, and words, unwords, lines, unlines split and join string sequences
- curry converts a multi-argument function into a curried function and flip reverses the order of the first two arguments
- isType validates the constructor type name of JavaScript values including String, Number, and Array
Files
- PROMPT.md
- csx.json
- package-lock.json
- package.json
- spec.json
- test/contract.cjs
Origin Seeder
anonymous