chore: convert bump script to js (#15820)

script/lib/version-utils.js

@@ -0,0 +1,73 @@
+const path = require('path')
+const fs = require('fs')
+const semver = require('semver')
+const { getLastMajorForMaster } = require('../get-last-major-for-master')
+const { GitProcess } = require('dugite')
+const { promisify } = require('util')
+
+const readFile = promisify(fs.readFile)
+const gitDir = path.resolve(__dirname, '..', '..')
+
+const getCurrentDate = () => {
+  const d = new Date()
+  const dd = `${d.getDate()}`.padStart(2, '0')
+  const mm = `${d.getMonth() + 1}`.padStart(2, '0')
+  const yyyy = d.getFullYear()
+  return `${yyyy}${mm}${dd}`
+}
+
+const isNightly = v => v.includes('nightly')
+const isBeta = v => v.includes('beta')
+const isStable = v => {
+  const parsed = semver.parse(v)
+  return !!(parsed && parsed.prerelease.length === 0)
+}
+
+const makeVersion = (components, delim, withPre = false) => {
+  let version = [components.major, components.minor, components.patch].join(delim)
+  if (withPre) {
+    version += `-${components.pre[0]}${delim}${components.pre[1]}`
+  }
+  return version
+}
+
+async function nextBeta (v) {
+  const next = semver.coerce(semver.clean(v))
+
+  const tagBlob = await GitProcess.exec(['tag', '--list', '-l', `v${next}-beta.*`], gitDir)
+  const tags = tagBlob.stdout.split('\n').filter(e => e !== '')
+  tags.sort((t1, t2) => semver.gt(t1, t2))
+
+  // increment the latest existing beta tag or start at beta.1 if it's a new beta line
+  return tags.length === 0 ? semver.inc(next, 'beta', 'prerelease') : semver.inc(tags.pop(), 'prerelease')
+}
+
+async function getElectronVersion () {
+  const versionPath = path.join(__dirname, '..', '..', 'VERSION')
+  const version = await readFile(versionPath, 'utf8')
+  return version.trim()
+}
+
+async function nextNightly (v) {
+  let next = semver.valid(semver.coerce(v))
+  const pre = `nightly.${getCurrentDate()}`
+
+  const branch = await GitProcess.exec(['rev-parse', '--abbrev-ref', 'HEAD'], gitDir)
+  if (branch === 'master') {
+    next = semver.inc(await getLastMajorForMaster(), 'major')
+  } else if (isStable(v)) {
+    next = semver.inc(next, 'patch')
+  }
+
+  return `${next}-${pre}`
+}
+
+module.exports = {
+  isStable,
+  isBeta,
+  isNightly,
+  nextBeta,
+  makeVersion,
+  getElectronVersion,
+  nextNightly
+}