electron-to-chromium 1.5.411: chromiumVersions

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.chromiumVersions in pkg:npm/electron-to-chromium@1.5.411
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:npm/electron-to-chromium@1.5.411
Demonstrate these symbols/APIs:
  - electron-to-chromium.chromiumVersions

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:sha256:2c003550991596b12800a713e04877bbf258a1101ffdccd1630f50e959ef1a3a","contract":["chromiumVersions maps Chromium major version strings to corresponding Electron major version strings","chromiumVersions maps valid Chromium version lookups when queried by string key","chromiumVersions contains mappings for historical and modern Chromium releases","chromiumVersions returns undefined for unmapped or unknown Chromium major versions"],"goal":"verify electron-to-chromium.chromiumVersions in pkg:npm/electron-to-chromium@1.5.411","kind":"HOW","packages":["pkg:npm/electron-to-chromium@1.5.411"],"schemaVersion":1,"symbols":["electron-to-chromium.chromiumVersions"]},"contractCommand":["node","test/contract.mjs"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"npm","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"npm","schemaVersion":1},"license":"MIT-0","packages":["pkg:npm/electron-to-chromium@1.5.411"],"schemaVersion":1,"subject":"pkg:npm/electron-to-chromium@1.5.411","symbols":["electron-to-chromium.chromiumVersions"],"verifierAdapter":"node-typescript@1"}

import electronToChromiumPkg from 'electron-to-chromium';

const { chromiumVersions } = electronToChromiumPkg;

/**
 * Maps a Chromium major version string or number to its corresponding Electron major version string using the chromiumVersions table.
 *
 * @param {string|number} chromiumVersion - The Chromium major version (e.g. "53", "128", 53).
 * @returns {string|undefined} The corresponding Electron major version string or undefined if not found.
 */
export function getElectronVersionForChromium(chromiumVersion) {
  const key = String(chromiumVersion);
  return chromiumVersions[key];
}

/**
 * Returns all mapped Chromium major versions available in the chromiumVersions mapping table.
 *
 * @returns {string[]} Array of Chromium major version keys.
 */
export function getAvailableChromiumVersions() {
  return Object.keys(chromiumVersions);
}

export { chromiumVersions };
export default chromiumVersions;

{
  "name": "sample-electron-to-chromium-chromiumversions",
  "version": "1.0.0",
  "lockfileVersion": 3,
  "requires": true,
  "packages": {
    "": {
      "name": "sample-electron-to-chromium-chromiumversions",
      "version": "1.0.0",
      "dependencies": {
        "electron-to-chromium": "1.5.411"
      }
    },
    "node_modules/electron-to-chromium": {
      "version": "1.5.411",
      "resolved": "https://registry.npmjs.org/electron-to-chromium/-/electron-to-chromium-1.5.411.tgz",
      "integrity": "sha512-gglkxzokjHfawpGxq75XdBV2/l3BAPzrsMs70qgaZdTW5rpV1tC4MdgJVP9fN126bODA4ZJQkn1wryEzJyQXIg==",
      "license": "ISC"
    }
  }
}

{
  "name": "sample-electron-to-chromium-chromiumversions",
  "version": "1.0.0",
  "type": "module",
  "private": true,
  "dependencies": {
    "electron-to-chromium": "1.5.411"
  }
}

{
  "schemaVersion": 1,
  "goal": "verify electron-to-chromium.chromiumVersions in pkg:npm/electron-to-chromium@1.5.411",
  "kind": "HOW",
  "packages": [
    "pkg:npm/electron-to-chromium@1.5.411"
  ],
  "symbols": [
    "electron-to-chromium.chromiumVersions"
  ]
}

import assert from 'node:assert/strict';
import chromiumVersions, {
  getElectronVersionForChromium,
  getAvailableChromiumVersions,
} from '../index.mjs';

// 1. chromiumVersions maps Chromium major version strings to corresponding Electron major version strings
{
  assert.strictEqual(chromiumVersions['39'], '0.20');
  assert.strictEqual(chromiumVersions['53'], '1.4');
  assert.strictEqual(chromiumVersions['61'], '2.0');
  assert.strictEqual(chromiumVersions['66'], '3.0');
  assert.strictEqual(chromiumVersions['128'], '32.0');
  assert.strictEqual(chromiumVersions['152'], '44.0');
}

// 2. chromiumVersions maps valid Chromium version lookups when queried by string key
{
  assert.strictEqual(getElectronVersionForChromium('53'), '1.4');
  assert.strictEqual(getElectronVersionForChromium(53), '1.4');
  assert.strictEqual(getElectronVersionForChromium('128'), '32.0');
  assert.strictEqual(getElectronVersionForChromium(128), '32.0');
}

// 3. chromiumVersions contains mappings for historical and modern Chromium releases
{
  const keys = getAvailableChromiumVersions();
  assert.ok(Array.isArray(keys));
  assert.ok(keys.length > 50);
  assert.ok(keys.includes('53'));
  assert.ok(keys.includes('128'));
  assert.strictEqual(typeof chromiumVersions, 'object');
  assert.ok(chromiumVersions !== null);
}

// 4. chromiumVersions returns undefined for unmapped or unknown Chromium major versions
{
  assert.strictEqual(chromiumVersions['99999'], undefined);
  assert.strictEqual(chromiumVersions['unknown'], undefined);
  assert.strictEqual(getElectronVersionForChromium('99999'), undefined);
  assert.strictEqual(getElectronVersionForChromium(99999), undefined);
  assert.strictEqual(getElectronVersionForChromium('unknown'), undefined);
}

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