electron-to-chromium 1.5.412: chromiumToElectron

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 electron-to-chromium.chromiumToElectron in pkg:npm/electron-to-chromium@1.5.412
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/electron-to-chromium@1.5.412
Demonstrate these symbols/APIs:
  - electron-to-chromium.chromiumToElectron
Constraints:
  - executionContext: node
Required runtime conditions:
  - ecosystem: npm
  - language: javascript
  - moduleSystem: cjs
  - packageManager: npm@10.9.8
  - 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.

{"case":{"caseId":"case:sha256:5d6f91d858b9f8b01ad7b51139d6d64539071c15a56f5db0d33685301e2f6c08","constraints":{"executionContext":"node"},"contract":["chromiumToElectron maps major Chromium version strings to corresponding Electron major version strings","chromiumToElectron maps numeric Chromium version inputs to corresponding Electron major version strings","chromiumToElectron maps full Chromium release version strings to arrays of matching Electron version strings","chromiumToElectron returns undefined for unknown or unreleased Chromium versions"],"goal":"verify electron-to-chromium.chromiumToElectron in pkg:npm/electron-to-chromium@1.5.412","kind":"HOW","packages":["pkg:npm/electron-to-chromium@1.5.412"],"schemaVersion":1,"symbols":["electron-to-chromium.chromiumToElectron"]},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","executionContext":"node","language":"javascript","libc":"glibc","libcVersion":"2.39","moduleSystem":"cjs","os":"linux","osVersionBucket":"24","packageManager":"npm","packageManagerVersion":"10.9.8","runtime":"node","runtimeVersion":"22.23.2","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/electron-to-chromium@1.5.412"],"schemaVersion":1,"subject":"pkg:npm/electron-to-chromium@1.5.412","symbols":["electron-to-chromium.chromiumToElectron"],"verifierAdapter":"node-typescript@1"}

import electronToChromiumPkg from 'electron-to-chromium';

const { chromiumToElectron } = electronToChromiumPkg;

/**
 * Resolve the Electron version(s) corresponding to a given Chromium version string or number.
 *
 * @param {string|number} chromiumVersion - The Chromium version to resolve (e.g. "53", "53.0.2785.143", 53).
 * @returns {string|string[]|undefined} The mapped Electron version string or array of versions, or undefined if not found.
 */
export function getElectronVersion(chromiumVersion) {
  return chromiumToElectron(chromiumVersion);
}

export { chromiumToElectron };
export default chromiumToElectron;

{
  "name": "sample-electron-to-chromium-chromiumtoelectron",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-electron-to-chromium-chromiumtoelectron",
      "version": "1.0.0",
      "dependencies": {
        "electron-to-chromium": "1.5.412"
      }
    },
    "node_modules/electron-to-chromium": {
      "version": "1.5.412",
      "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.5.412.tgz",
      "integrity": "sha512-z4rMe3esBzlzovKHj4gxJnsCGZRK5l4baUvm+gCGJBPE+gsyUMKsuU9tnEUtI1dOebXz1ytAPGjvXhmQ7rIPwA==",
      "license": "ISC"
    }
  }
}

{
  "name": "sample-electron-to-chromium-chromiumtoelectron",
  "version": "1.0.0",
  "type": "module",
  "private": true,
  "dependencies": {
    "electron-to-chromium": "1.5.412"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify electron-to-chromium.chromiumToElectron in pkg:npm/electron-to-chromium@1.5.412",
  "kind": "HOW",
  "packages": [
    "pkg:npm/electron-to-chromium@1.5.412"
  ],
  "symbols": [
    "electron-to-chromium.chromiumToElectron"
  ],
  "constraints": {
    "executionContext": "node"
  },
  "runtimeConditions": {
    "ecosystem": "npm",
    "language": "javascript",
    "moduleSystem": "cjs",
    "packageManager": "npm@10.9.8",
    "runtime": "node@22.23.2"
  }
}

import assert from 'node:assert/strict';
import chromiumToElectron, { getElectronVersion } from '../index.mjs';

// 1. chromiumToElectron maps major Chromium version strings to corresponding Electron major version strings
{
  assert.strictEqual(chromiumToElectron('53'), '1.4');
  assert.strictEqual(chromiumToElectron('61'), '2.0');
  assert.strictEqual(chromiumToElectron('66'), '3.0');
  assert.strictEqual(chromiumToElectron('128'), '32.0');
  assert.strictEqual(chromiumToElectron('130'), '33.0');

  assert.strictEqual(getElectronVersion('53'), '1.4');
  assert.strictEqual(getElectronVersion('128'), '32.0');
  assert.strictEqual(getElectronVersion('130'), '33.0');
}

// 2. chromiumToElectron maps numeric Chromium version inputs to corresponding Electron major version strings
{
  assert.strictEqual(chromiumToElectron(49), '0.37');
  assert.strictEqual(chromiumToElectron(53), '1.4');
  assert.strictEqual(chromiumToElectron(61), '2.0');
  assert.strictEqual(chromiumToElectron(66), '3.0');
  assert.strictEqual(chromiumToElectron(128), '32.0');
  assert.strictEqual(chromiumToElectron(130), '33.0');

  assert.strictEqual(getElectronVersion(49), '0.37');
  assert.strictEqual(getElectronVersion(53), '1.4');
  assert.strictEqual(getElectronVersion(128), '32.0');
  assert.strictEqual(getElectronVersion(130), '33.0');
}

// 3. chromiumToElectron maps full Chromium release version strings to arrays of matching Electron version strings
{
  const v53 = chromiumToElectron('53.0.2785.143');
  assert.ok(Array.isArray(v53));
  assert.ok(v53.includes('1.4.13'));

  const v128 = chromiumToElectron('128.0.6613.36');
  assert.ok(Array.isArray(v128));
  assert.ok(v128.includes('32.0.0'));
  assert.ok(v128.includes('32.0.1'));

  const helperV53 = getElectronVersion('53.0.2785.143');
  assert.ok(Array.isArray(helperV53));
  assert.ok(helperV53.includes('1.4.13'));
}

// 4. chromiumToElectron returns undefined for unknown or unreleased Chromium versions
{
  assert.strictEqual(chromiumToElectron('99999'), undefined);
  assert.strictEqual(chromiumToElectron('99999.0.0.0'), undefined);
  assert.strictEqual(chromiumToElectron('invalid-version'), undefined);

  assert.strictEqual(getElectronVersion('99999'), undefined);
  assert.strictEqual(getElectronVersion('unknown'), undefined);
}

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