import * as OS from 'os'
import { UAParser } from 'ua-parser-js'

/** Get the OS we're currently running on. */
export function getOS() {
  if (__DARWIN__) {
    // On macOS, OS.release() gives us the kernel version which isn't terribly
    // meaningful to any human being, so we'll parse the User Agent instead.
    // See https://github.com/desktop/desktop/issues/1130.
    const parser = new UAParser()
    const os = parser.getOS()
    return `${os.name} ${os.version}`
  } else if (__WIN32__) {
    return `Windows ${OS.release()}`
  } else {
    return `${OS.type()} ${OS.release()}`
  }
}

/** See the OS we're currently running on is at least Mojave. */
export function isMojaveOrLater() {
  if (__DARWIN__) {
    const parser = new UAParser()
    const os = parser.getOS()

    if (os.version == null) {
      return false
    }

    const parts = os.version.split('.')
    if (parts.length !== 2) {
      // unknown version format, giving up
      return false
    }

    return parts[1] > '13'
  }
  return false
}

import * as OS from 'os'
import { UAParser } from 'ua-parser-js'

/** Get the OS we're currently running on. */
export function getOS() {
  if (__DARWIN__) {
    // On macOS, OS.release() gives us the kernel version which isn't terribly
    // meaningful to any human being, so we'll parse the User Agent instead.
    // See https://github.com/desktop/desktop/issues/1130.
    const parser = new UAParser()
    const os = parser.getOS()
    return `${os.name} ${os.version}`
  } else if (__WIN32__) {
    return `Windows ${OS.release()}`
  } else {
    return `${OS.type()} ${OS.release()}`
  }
}

/** See the OS we're currently running on is at least Mojave. */
export function isMojaveOrLater() {
  if (__DARWIN__) {
    const parser = new UAParser()
    const os = parser.getOS()
    // Check that it is Mojave or later
    if (os.version && os.version.split('.')[1] > '13') {
      return true
    }
  }
  return false
}

--- 
+++ 
@@ -22,10 +22,18 @@
   if (__DARWIN__) {
     const parser = new UAParser()
     const os = parser.getOS()
-    // Check that it is Mojave or later
-    if (os.version && os.version.split('.')[1] > '13') {
-      return true
+
+    if (os.version == null) {
+      return false
     }
+
+    const parts = os.version.split('.')
+    if (parts.length !== 2) {
+      // unknown version format, giving up
+      return false
+    }
+
+    return parts[1] > '13'
   }
   return false
 }
Clean Up Mojave or later
