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/var/lang/lib/node_modules/npm/node_modules/semver/functions

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truncate.js1021 B · 49 lines
'use strict' const parse = require('./parse')const constants = require('../internal/constants')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 = (    version instanceof SemVer ? version.version : version  )   return parse(versionStringToParse, options)} const doTruncation = (version, truncation) => {  if (isPrerelease(truncation)) {    return version.version  }   version.prerelease = []   switch (truncation) {    case 'major':      version.minor = 0      version.patch = 0      break    case 'minor':      version.patch = 0      break  }   return version.format()} const isPrerelease = (type) => {  return type.startsWith('pre')} module.exports = truncate