CodeSampleX

Ejemplo

word-wrap 1.2.5: Wrap multiline text with custom indentation and cut options using word-wrap

Muestra verificada para npm word-wrap 1.2.5: Wrap multiline text with custom indentation and cut options using word-wrap. El contrato se ejecutó en node 22 …

sha256:67dce847dc27aaa755d089307aa8594012b1bb30ed76223655d80273eedaffc3

Esta red ofrece una sola cosa: una muestra que compila. La ejecutó en un sandbox y guardó el recibo firmado. No califica ni garantiza nada: si el mismo código compila donde estás no es algo que haya medido. Cuántas claves de firma distintas presentaron un recibo de contrato aprobado. Una es solo el autor; más de una significa que alguien más también lo compiló. Una clave se genera sola y no tiene identidad registrada detrás, así que cuenta claves, no personas. MIT-0

Evidencia de ejecución

El entorno declarado y las ejecuciones firmadas se muestran por separado, para que veas exactamente qué ejecutó esta muestra y dónde.

Base de evidencia
Contrato firmado aprobado
Recibos de verificación
1
Claves de firma que lo compilaron
1
Entorno declarado node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm

Entornos de las ejecuciones de verificación

Entorno Contrato Etapas Ejecución
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…
2026-08-28

Caso

HOW
Objetivo
Wrap multiline text with custom indentation and cut options using word-wrap
Paquetes
Símbolos
  • word-wrap
Entorno
node 22.23.2
Creado
2026-08-28T02:25:57Z

Contrato

  1. assert wrap(str, { width: 20, indent: ' ' }) wraps text at 20 chars with 2-space indent
  2. assert wrap(str, { width: 20, indent: '' }) wraps text without indentation
  3. assert wrap(str, { width: 10, indent: '', newline: '\n---\n' }) separates lines with custom delimiter
  4. assert wrap(longWord, { width: 8, indent: '', cut: true }) cuts words exceeding width limit
  5. assert wrap(str, { width: 20, indent: '', trim: true }) trims trailing whitespace on each line
  6. assert wrap(str, { width: 5, indent: '', escape: fn }) applies escape transform to each line
  7. assert wrap(null) and wrap(undefined) return null and undefined without throwing

Archivos

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

Descargar el artefacto de código fuente (tar.gz)

Código fuente

PROMPT.md
Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: Wrap multiline text with custom indentation and cut options using word-wrap
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/word-wrap@1.2.5
Demonstrate these symbols/APIs:
  - word-wrap

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.
csx.json
{"case":{"caseId":"case:sha256:82b575b56a2e1b21d495cfafdedcd965bda4b5f3af42ae680b6d71af0990488f","contract":["assert wrap(str, { width: 20, indent: '  ' }) wraps text at 20 chars with 2-space indent","assert wrap(str, { width: 20, indent: '' }) wraps text without indentation","assert wrap(str, { width: 10, indent: '', newline: '\\n---\\n' }) separates lines with custom delimiter","assert wrap(longWord, { width: 8, indent: '', cut: true }) cuts words exceeding width limit","assert wrap(str, { width: 20, indent: '', trim: true }) trims trailing whitespace on each line","assert wrap(str, { width: 5, indent: '', escape: fn }) applies escape transform to each line","assert wrap(null) and wrap(undefined) return null and undefined without throwing"],"goal":"Wrap multiline text with custom indentation and cut options using word-wrap","kind":"HOW","packages":["pkg:npm/word-wrap@1.2.5"],"schemaVersion":1,"symbols":["word-wrap"]},"contractCommand":["node","test/contract.cjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","executionContext":"node","language":"javascript","libc":"glibc","libcVersion":"2.39","moduleSystem":"cjs","os":"linux","osVersionBucket":"24","packageManager":"npm","runtime":"node","runtimeVersion":"22.23.2","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/word-wrap@1.2.5"],"schemaVersion":1,"subject":"pkg:npm/word-wrap@1.2.5","symbols":["word-wrap"],"verifierAdapter":"node-typescript@1"}
index.js
const wrap = require('word-wrap');

function wrapText(str, options) {
  return wrap(str, options);
}

module.exports = {
  wrapText,
};
package-lock.json
{
  "name": "word-wrap-sample",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "word-wrap-sample",
      "version": "1.0.0",
      "dependencies": {
        "word-wrap": "1.2.5"
      }
    },
    "node_modules/word-wrap": {
      "version": "1.2.5",
      "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.5.tgz",
      "integrity": "sha512-BN22B5eaMMI9UMtjrGd5g5eCYPpCPDUy0FJXbYsaT5zYxjFOckS53SQDE3pWkVoWpHXVb3BrYcEN4Twa55B5cA==",
      "license": "MIT",
      "engines": {
        "node": ">=0.10.0"
      }
    }
  }
}
package.json
{
  "name": "word-wrap-sample",
  "version": "1.0.0",
  "private": true,
  "description": "Wrap multiline text with custom indentation and cut options using word-wrap",
  "main": "index.js",
  "scripts": {
    "test": "node test/contract.cjs"
  },
  "dependencies": {
    "word-wrap": "1.2.5"
  }
}
spec.json
{
  "schemaVersion": 1,
  "goal": "Wrap multiline text with custom indentation and cut options using word-wrap",
  "kind": "HOW",
  "packages": [
    "pkg:npm/word-wrap@1.2.5"
  ],
  "symbols": [
    "word-wrap"
  ]
}
test/contract.cjs
const assert = require('node:assert/strict');
const wrap = require('word-wrap');

// 1. Wrap multiline string with specified width and custom indent
const input = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit.';
const result1 = wrap(input, { width: 20, indent: '  ' });
assert.equal(result1, '  Lorem ipsum dolor \n  sit amet, \n  consectetur \n  adipiscing elit.');

// 2. Wrap without indentation
const result2 = wrap(input, { width: 20, indent: '' });
assert.equal(result2, 'Lorem ipsum dolor \nsit amet, \nconsectetur \nadipiscing elit.');

// 3. Custom newline separator without trim preserves trailing word space before newline
const result3 = wrap('alpha beta gamma delta', { width: 10, indent: '', newline: '\n---\n' });
assert.equal(result3, 'alpha beta \n---\ngamma \n---\ndelta');

// 4. Cut long words exceeding width limit
const longWord = 'antidisestablishmentarianism';
const result4 = wrap(longWord, { width: 8, indent: '', cut: true });
assert.equal(result4, 'antidise\nstablish\nmentaria\nnism');

// 5. Trim trailing whitespace from wrapped lines
const trailingSpaces = 'first   \nsecond   \nthird   ';
const result5 = wrap(trailingSpaces, { width: 20, indent: '', trim: true });
assert.equal(result5, 'first\nsecond\nthird');

// 6. Escape callback modifying each formatted line
const result6 = wrap('one two three', {
  width: 5,
  indent: '',
  escape: (line) => `(${line.trim()})`,
});
assert.equal(result6, '(one)\n(two)\n(three)');

// 7. Non-string inputs (null and undefined) returned directly
assert.equal(wrap(null), null);
assert.equal(wrap(undefined), undefined);

console.log('Contract assertions passed.');

Seeder de origen

anónimo