1 files changed, 36 insertions, 4 deletions

diff --git a/deps/npm/node_modules/semver/semver.js b/deps/npm/node_modules/semver/semver.js
index 9e9470d86f..a7385b41c5 100644
--- a/deps/npm/node_modules/semver/semver.js
+++ b/deps/npm/node_modules/semver/semver.js
@@ -258,6 +258,8 @@ function SemVer(version, loose) {
       return version;
     else
       version = version.version;
+  } else if (typeof version !== 'string') {
+    throw new TypeError('Invalid Version: ' + version);
   }
 
   if (!(this instanceof SemVer))
@@ -330,7 +332,7 @@ SemVer.prototype.comparePre = function(other) {
     return -1;
   else if (!this.prerelease.length && other.prerelease.length)
     return 1;
-  else if (!this.prerelease.lenth && !other.prerelease.length)
+  else if (!this.prerelease.length && !other.prerelease.length)
     return 0;
 
   var i = 0;
@@ -351,19 +353,49 @@ SemVer.prototype.comparePre = function(other) {
   } while (++i);
 };
 
+// preminor will bump the version up to the next minor release, and immediately
+// down to pre-release. premajor and prepatch work the same way.
 SemVer.prototype.inc = function(release) {
   switch (release) {
+    case 'premajor':
+      this.inc('major');
+      this.inc('pre');
+      break;
+    case 'preminor':
+      this.inc('minor');
+      this.inc('pre');
+      break;
+    case 'prepatch':
+      this.inc('patch');
+      this.inc('pre');
+      break;
+    // If the input is a non-prerelease version, this acts the same as
+    // prepatch.
+    case 'prerelease':
+      if (this.prerelease.length === 0)
+        this.inc('patch');
+      this.inc('pre');
+      break;
     case 'major':
       this.major++;
       this.minor = -1;
     case 'minor':
       this.minor++;
-      this.patch = -1;
+      this.patch = 0;
+      this.prerelease = [];
+      break;
     case 'patch':
-      this.patch++;
+      // If this is not a pre-release version, it will increment the patch.
+      // If it is a pre-release it will bump up to the same patch version.
+      // 1.2.0-5 patches to 1.2.0
+      // 1.2.0 patches to 1.2.1
+      if (this.prerelease.length === 0)
+        this.patch++;
       this.prerelease = [];
       break;
-    case 'prerelease':
+    // This probably shouldn't be used publically.
+    // 1.0.0 "pre" would become 1.0.0-0 which is the wrong direction.
+    case 'pre':
       if (this.prerelease.length === 0)
         this.prerelease = [0];
       else {