empathic 2.0.1: find

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: verify pkg:npm/empathic@2.0.1
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/empathic@2.0.1
Constraints:
  - executionContext: node
Required runtime conditions:
  - ecosystem: npm
  - language: javascript
  - moduleSystem: cjs
  - runtime: node@22.23.2

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.

# verify pkg:npm/empathic@2.0.1

Clean-room sample demonstrating and verifying `empathic/find` API contract with `pkg:npm/empathic@2.0.1`.

{"case":{"caseId":"case:sha256:aab3243dfbbc573495a1d76cc6c934b01a584247b44b9759a015f31f537acacb","constraints":{"executionContext":"node"},"contract":["find.up(name, { cwd }) traverses parent directories to find a matching file","find.file(name, { cwd }) traverses parent directories to find a file, ignoring directories with the same name","find.dir(name, { cwd }) traverses parent directories to find a directory, ignoring files with the same name","find.any(names, { cwd }) traverses parent directories to find the first candidate match among given names","find.up(name, { cwd }) returns undefined when no match exists"],"goal":"verify pkg:npm/empathic@2.0.1","kind":"HOW","packages":["pkg:npm/empathic@2.0.1"],"schemaVersion":1,"symbols":["empathic/find"]},"contractCommand":["node","test/contract.js"],"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/empathic@2.0.1"],"schemaVersion":1,"subject":"pkg:npm/empathic@2.0.1","symbols":["empathic/find"],"verifierAdapter":"node-typescript@1"}

const find = require('empathic/find');

module.exports = {
  findUp: find.up,
  findFile: find.file,
  findDir: find.dir,
  findAny: find.any
};

{
  "name": "sample-empathic-verify",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-empathic-verify",
      "version": "1.0.0",
      "dependencies": {
        "empathic": "2.0.1"
      }
    },
    "node_modules/empathic": {
      "version": "2.0.1",
      "resolved": "https://registry.npmjs.org/empathic/-/empathic-2.0.1.tgz",
      "integrity": "sha512-YGRs8knHhKHVShLkFET/rWAU8kmHbOV5LwN938RHI0pljAJ1Gf6SzXsSmRaEzcXTtOOmVqJ5+WtQPL5uigY50Q==",
      "license": "MIT",
      "engines": {
        "node": ">=14"
      }
    }
  }
}

{
  "name": "sample-empathic-verify",
  "version": "1.0.0",
  "description": "verify pkg:npm/empathic@2.0.1",
  "main": "index.js",
  "scripts": {
    "test": "node test/contract.js"
  },
  "dependencies": {
    "empathic": "2.0.1"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify pkg:npm/empathic@2.0.1",
  "kind": "HOW",
  "packages": [
    "pkg:npm/empathic@2.0.1"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "cjs",
    "runtime": "node@22.23.2"
  }
}

const assert = require('node:assert');
const path = require('node:path');
const fs = require('node:fs');
const os = require('node:os');
const find = require('empathic/find');

const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'csx-empathic-'));

try {
  const dirLevel1 = path.join(tmpDir, 'dir_level1');
  const dirLevel2 = path.join(dirLevel1, 'dir_level2');
  const startDir = path.join(dirLevel2, 'start_here');
  fs.mkdirSync(startDir, { recursive: true });

  const fileTarget = path.join(tmpDir, 'file_target.txt');
  fs.writeFileSync(fileTarget, 'sample content');

  const fileSameName = path.join(tmpDir, 'same_name');
  fs.writeFileSync(fileSameName, 'file content');

  const dirSameName = path.join(dirLevel1, 'same_name');
  fs.mkdirSync(dirSameName);

  // 1. find.up traverses parent directories to find a matching file
  const foundUp = find.up('file_target.txt', { cwd: startDir });
  assert.strictEqual(foundUp, fileTarget, 'find.up should locate file_target.txt in parent directory');

  // 2. find.file traverses parent directories to find a file, ignoring directories with the same name
  const foundFile = find.file('same_name', { cwd: startDir });
  assert.strictEqual(foundFile, fileSameName, 'find.file should locate file and ignore directory with same name');

  // 3. find.dir traverses parent directories to find a directory, ignoring files with the same name
  const foundDir = find.dir('same_name', { cwd: startDir });
  assert.strictEqual(foundDir, dirSameName, 'find.dir should locate directory and ignore file with same name');

  // 4. find.any traverses parent directories to find the first candidate match among given names
  const foundAny = find.any(['non_existent.txt', 'file_target.txt'], { cwd: startDir });
  assert.strictEqual(foundAny, fileTarget, 'find.any should locate first matching candidate');

  // 5. find.up returns undefined when no match exists
  const notFound = find.up('completely_missing_item.txt', { cwd: startDir });
  assert.strictEqual(notFound, undefined, 'find.up should return undefined when item does not exist');

  console.log('All empathic/find contract assertions passed successfully.');
} finally {
  fs.rmSync(tmpDir, { recursive: true, force: true });
}