5 examples of 'check node version' in JavaScript

16
function checkNodeVersion() {
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  if (!semver.satisfies(process.version, '>=2.0.0')) {
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    var engine = semver.lt(process.version, '1.0.0') ? 'Node' : 'io.js';
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    var message = 'You are currently running ' + engine + ' ' +
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      process.version + '.\n' +
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      '\n' +
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      'React Native is moving to io.js 2.x. There are several ways to upgrade' +
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      'to io.js depending on your preference.\n' +
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      '\n' +
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      'nvm:       nvm install iojs && nvm alias default iojs\n' +
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      'Homebrew:  brew unlink node; brew install iojs && brew ln iojs --force\n' +
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      'Installer: download the Mac .pkg from https://iojs.org/\n' +
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      '\n' +
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      'About io.js:     https://iojs.org\n' +
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      'Follow along at: https://github.com/facebook/react-native/issues/1737';
31
    console.log(formatBanner(message, {
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      chalkFunction: chalk.green,
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      marginLeft: 1,
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      marginRight: 1,
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      paddingBottom: 1,
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    }));
37
  }
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}

116
async function checkNodeVersion(minimalNodeVersion) {
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  const spinner = ora('Checking node version').start()
118
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  let nodeVersion
120
  try {
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    const { stdout } = await exec('node --version')
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    nodeVersion = stdout.trim()
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  } catch (err) {
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    spinner.fail(`node version check failed\n${err}`)
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    throw new Error(err)
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  }
127
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  if (compareVersions(nodeVersion, minimalNodeVersion) === -1) {
129
    spinner.fail(
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      `You need Node.js v${minimalNodeVersion} or above but you have v${nodeVersion}`
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    )
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    throw new Error()
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  }
134
135
  spinner.succeed(`Node version ${nodeVersion} ${printOk()}`)
136
}

3
module.exports = function checkNodeVersion(nodeVersion) {
4
  var returnOutput = {
5
    warn: false,
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    warning: warning
7
  };
8
  if (nodeVersion) {
9
    nodeVersion = nodeVersion.split('.')[0];
10
    if (nodeVersion < 1) {
11
      returnOutput.warn = true;
12
    }
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  }
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  return returnOutput;
15
};

178
function validateNodeVersion(version) {
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  const [major, minor] = parseSemver(version);
180
181
  if (major < 7 || (major === 7 && minor < 6)) {
182
    throw new Error(
183
      'Running the end-to-end tests requires Node version 7.6.0 or higher.'
184
    );
185
  }
186
}

87
static getNodeVersion(): string {
88
  return process.versions.node;
89
}