fix: supported version implementation update linting & test coverage

lib/utils/unsupported.js

@@ -16,15 +16,6 @@ exports.checkForBrokenNode = function () {
   var nodejs = checkVersion(process.version)
   if (nodejs.broken) {
     console.error('ERROR: npm is known not to run on Node.js ' + process.version)
-    supportedNode.forEach(function (rel) {
-      if (semver.satisfies(nodejs.version, rel.ver)) {
-        console.error('Node.js ' + rel.ver + " is supported but the specific version you're running has")
-        console.error('a bug known to break npm. Please update to at least ' + rel.min + ' to use this')
-        console.error('version of npm. You can find the latest release of Node.js at https://nodejs.org/')
-        process.exit(1)
-      }
-    })
-    var supportedMajors = supportedNode.map(function (n) { return n.ver }).join(', ')
     console.error("You'll need to upgrade to a newer Node.js version in order to use this")
     console.error('version of npm. You can find the latest version at https://nodejs.org/')
     process.exit(1)
@@ -35,7 +26,6 @@ exports.checkForUnsupportedNode = function () {
   var nodejs = checkVersion(process.version)
   if (nodejs.unsupported) {
     var log = require('npmlog')
-    var supportedMajors = supportedNode.map(function (n) { return n.ver }).join(', ')
     log.warn('npm', 'npm does not support Node.js ' + process.version)
     log.warn('npm', 'You should probably upgrade to a newer version of node as we')
     log.warn('npm', "can't make any promises that npm will work with this version.")

test/tap/unsupported.js

@@ -30,7 +30,8 @@ var versions = [
   ['v9.3.0', false, false],
   ['v10.0.0-0', false, false],
   ['v11.0.0-0', false, false],
-  ['v12.0.0-0', false, false]
+  ['v12.0.0-0', false, false],
+  ['v13.0.0-0', false, false]
 ]
 
 test('versions', function (t) {