[Node.js] get Operating-System Platform (Windows, macOS, Linux) and Architecture (x32, x64, etc.) (without any third-party npm dependencies)

help.js

const os = require('os');
// See docs: https://nodejs.org/api/os.html

const usage = {};

usage[`require('os').type()`] = {
  value: os.type(),
  otherValues: [
    'Linux', 'Darwin', 'Windows_NT'
  ],
  docs: 'https://nodejs.org/api/os.html#os_os_type'
};

usage[`require('os').release()`] = {
  value: os.release(),
  otherExampleValues: 'https://en.wikipedia.org/wiki/Uname#Examples',
  docs: 'https://nodejs.org/api/os.html#os_os_release'
};

usage[`require('os').arch()`] = {
  value: os.arch(),
  otherValues: [
    'arm', 'arm64', 'ia32', 'mips', 'mipsel', 'ppc', 'ppc64', 's390', 's390x', 'x32', 'x64'
  ],
  docs: 'https://nodejs.org/api/os.html#os_os_arch'
};

usage[`require('os').platform()`] = {
  value: os.platform(),
  otherValues: [
    'aix', 'darwin', 'freebsd', 'linux', 'openbsd', 'sunos', 'win32'
  ],
  docs: 'https://nodejs.org/api/os.html#os_os_platform'
};

// For Windows: can also check /^(msys|cygwin)$/.test(process.env.OSTYPE)

usage['process.arch'] = {
  value: process.arch,
  otherValues: [
    'arm', 'arm64', 'ia32', 'mips', 'mipsel', 'ppc', 'ppc64', 's390', 's390x', 'x32', 'x64'
  ],
  docs: 'https://nodejs.org/api/process.html#process_process_arch'
};

usage['process.platform'] = {
  value: process.platform,
  otherValues: [
    'aix', 'darwin', 'freebsd', 'linux', 'openbsd', 'sunos', 'win32'
  ],
  docs: 'https://nodejs.org/api/process.html#process_process_platform'
};

usage['process.platform'] = {
  value: process.platform,
  otherValues: [
    'aix', 'darwin', 'freebsd', 'linux', 'openbsd', 'sunos', 'win32'
  ],
  docs: 'https://nodejs.org/api/process.html#process_process_platform'
};

console.log();
Object.keys(usage).map((key, idx) => {
  const data = usage[key];
  console.log(`${key}`);
  console.log(`    Value:\n        '${data.value}'`);
  if (data.otherExampleValues && data.otherExampleValues.length) {
    if (!Array.isArray(data.otherExampleValues)) {
      data.otherExampleValues = [data.otherExampleValues, 'google.com'];
    }
    console.log(`    Other example values:\n        ${data.otherExampleValues.map(value => `${value}`).join('\n        ')}`);
  }
  if (data.otherValues && data.otherValues.length) {
    console.log(`    Other possible values:\n        ${data.otherValues.map(value => ` '${value}'`).toString().trim()}`);
  }
  console.log(`    Docs:\n        ${data.docs}\n`);
});
console.log();

system.js

// Source: https://gist.github.com/cvan/ef28f73b88b991d4a9705314b2af2e78#file-system-js
// Author: CVAN <https://cvan.io>
// Useful helper snippet for understanding the capabilities of a user's system from Node.js' built-in `process.arch` and `process.platform`.
const system = {
  _arch: process.arch,
  _platform: process.platform
};
system.win = system._platform === 'win32' || process.env.OSTYPE === 'cygwin' || process.env.OSTYPE === 'msys';
system.mac = system._platform === 'darwin';
system.linux = !system.win && !system.mac;
system.arch32 = system._arch === 'arm' || system._arch === 'ia32' || system._arch === 'mips' || system._arch === 'ppc' || system._arch === 's390' || system._arch === 'x32';
system.arch64 = system._arch === 'arm64' || system._arch === 'mipsel' || system._arch === 'ppc64' || system._arch === '390x' || system._arch === 'x64';
system.intel = system._arch === 'ia32' || system._arch === 'x32' || system._arch === 'x64';
system.arm = system._arch === 'arm' || system._arch === 'arm64';
if (!module.parent) {
  console.log(system);
}
if (typeof module !== 'undefined' && module.exports) {
  module.exports = system;
} else if (typeof window !== 'undefined') {
  window.system = system;
}