Function truncate

functions/truncate.js:7–14

(version, truncation, options)

const SemVer = require('../classes/semver')

const truncate = (version, truncation, options) => {
  if (!constants.RELEASE_TYPES.includes(truncation)) {
    return null
  }

  const clonedVersion = cloneInputVersion(version, options)
  return clonedVersion && doTruncation(clonedVersion, truncation)
}

const cloneInputVersion = (version, options) => {
  const versionStringToParse = (