Extras: update semver.js & mod to v4.3.3

js/extras/semver-mod.js

@@ -1,18 +1,17 @@
-/**
+/*! Modified semver.js for node.js (v4.3.3, 3/27/2015) *//*
- Modified semver.js for node.js by R.Garrison (@Mottie)
+ semver-mod.js by R.Garrison (@Mottie)
- Original by @isaacs: https://github.com/isaacs/node-semver
+ semver.js by @isaacs: https://github.com/isaacs/node-semver
  ( all modifications have been labeled )
  */
 // ***** MODIFIED LINE BELOW *****
 (function(){
 // ***** MODIFIED LINE BELOW *****
 var module = { exports : {} };
-
 // export the class if we are in a Node-like system.
 // ***** MODIFIED LINE BELOW *****
 // if (typeof module === 'object' && module.exports === exports)
 // ***** MODIFIED LINE BELOW *****
-  var exports = module.exports = SemVer;
+var exports = module.exports = SemVer;
 
 // The debug function is excluded entirely from the minified version.
 /* nomin */ var debug;
@@ -32,6 +31,9 @@ var module = { exports : {} };
 // Not necessarily the package version of this code.
 exports.SEMVER_SPEC_VERSION = '2.0.0';
 
+var MAX_LENGTH = 256;
+var MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991;
+
 // The actual regexps go on exports.re
 var re = exports.re = [];
 var src = exports.src = [];
@@ -150,18 +152,18 @@ var XRANGEPLAIN = R++;
 src[XRANGEPLAIN] = '[v=\\s]*(' + src[XRANGEIDENTIFIER] + ')' +
                    '(?:\\.(' + src[XRANGEIDENTIFIER] + ')' +
                    '(?:\\.(' + src[XRANGEIDENTIFIER] + ')' +
-                   '(?:(' + src[PRERELEASE] + ')' +
+                   '(?:' + src[PRERELEASE] + ')?' +
-                   ')?)?)?';
+                   src[BUILD] + '?' +
+                   ')?)?';
 
 var XRANGEPLAINLOOSE = R++;
 src[XRANGEPLAINLOOSE] = '[v=\\s]*(' + src[XRANGEIDENTIFIERLOOSE] + ')' +
                         '(?:\\.(' + src[XRANGEIDENTIFIERLOOSE] + ')' +
                         '(?:\\.(' + src[XRANGEIDENTIFIERLOOSE] + ')' +
-                        '(?:(' + src[PRERELEASELOOSE] + ')' +
+                        '(?:' + src[PRERELEASELOOSE] + ')?' +
-                        ')?)?)?';
+                        src[BUILD] + '?' +
+                        ')?)?';
 
-// >=2.x, for example, means >=2.0.0-0
-// <1.x would be the same as "<1.0.0-0", though.
 var XRANGE = R++;
 src[XRANGE] = '^' + src[GTLT] + '\\s*' + src[XRANGEPLAIN] + '$';
 var XRANGELOOSE = R++;
@@ -245,8 +247,24 @@ for (var i = 0; i < R; i++) {
 
 exports.parse = parse;
 function parse(version, loose) {
+  if (version instanceof SemVer)
+    return version;
+
+  if (typeof version !== 'string')
+    return null;
+
+  if (version.length > MAX_LENGTH)
+    return null;
+
   var r = loose ? re[LOOSE] : re[FULL];
-  return (r.test(version)) ? new SemVer(version, loose) : null;
+  if (!r.test(version))
+    return null;
+
+  try {
+    return new SemVer(version, loose);
+  } catch (er) {
+    return null;
+  }
 }
 
 exports.valid = valid;
@@ -258,7 +276,7 @@ function valid(version, loose) {
 
 exports.clean = clean;
 function clean(version, loose) {
-  var s = parse(version, loose);
+  var s = parse(version.trim().replace(/^[=v]+/, ''), loose);
   return s ? s.version : null;
 }
 
@@ -271,8 +289,13 @@ function SemVer(version, loose) {
       return version;
     else
       version = version.version;
+  } else if (typeof version !== 'string') {
+    throw new TypeError('Invalid Version: ' + version);
   }
 
+  if (version.length > MAX_LENGTH)
+    throw new TypeError('version is longer than ' + MAX_LENGTH + ' characters')
+
   if (!(this instanceof SemVer))
     return new SemVer(version, loose);
 
@@ -290,12 +313,26 @@ function SemVer(version, loose) {
   this.minor = +m[2];
   this.patch = +m[3];
 
+  if (this.major > MAX_SAFE_INTEGER || this.major < 0)
+    throw new TypeError('Invalid major version')
+
+  if (this.minor > MAX_SAFE_INTEGER || this.minor < 0)
+    throw new TypeError('Invalid minor version')
+
+  if (this.patch > MAX_SAFE_INTEGER || this.patch < 0)
+    throw new TypeError('Invalid patch version')
+
   // numberify any prerelease numeric ids
   if (!m[4])
     this.prerelease = [];
   else
     this.prerelease = m[4].split('.').map(function(id) {
-      return (/^[0-9]+$/.test(id)) ? +id : id;
+      if (/^[0-9]+$/.test(id)) {
+        var num = +id
+        if (num >= 0 && num < MAX_SAFE_INTEGER)
+          return num
+      }
+      return id;
     });
 
   this.build = m[5] ? m[5].split('.') : [];
@@ -343,7 +380,7 @@ 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;
@@ -364,19 +401,72 @@ SemVer.prototype.comparePre = function(other) {
   } while (++i);
 };
 
-SemVer.prototype.inc = function(release) {
+// 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, identifier) {
   switch (release) {
-    case 'major':
+    case 'premajor':
+      this.prerelease.length = 0;
+      this.patch = 0;
+      this.minor = 0;
       this.major++;
-      this.minor = -1;
+      this.inc('pre', identifier);
-    case 'minor':
+      break;
+    case 'preminor':
+      this.prerelease.length = 0;
+      this.patch = 0;
       this.minor++;
-      this.patch = -1;
+      this.inc('pre', identifier);
+      break;
+    case 'prepatch':
+      // If this is already a prerelease, it will bump to the next version
+      // drop any prereleases that might already exist, since they are not
+      // relevant at this point.
+      this.prerelease.length = 0;
+      this.inc('patch', identifier);
+      this.inc('pre', identifier);
+      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', identifier);
+      this.inc('pre', identifier);
+      break;
+
+    case 'major':
+      // If this is a pre-major version, bump up to the same major version.
+      // Otherwise increment major.
+      // 1.0.0-5 bumps to 1.0.0
+      // 1.1.0 bumps to 2.0.0
+      if (this.minor !== 0 || this.patch !== 0 || this.prerelease.length === 0)
+        this.major++;
+      this.minor = 0;
+      this.patch = 0;
+      this.prerelease = [];
+      break;
+    case 'minor':
+      // If this is a pre-minor version, bump up to the same minor version.
+      // Otherwise increment minor.
+      // 1.2.0-5 bumps to 1.2.0
+      // 1.2.1 bumps to 1.3.0
+      if (this.patch !== 0 || this.prerelease.length === 0)
+        this.minor++;
+      this.patch = 0;
+      this.prerelease = [];
+      break;
     case '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 publicly.
+    // 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 {
@@ -390,6 +480,15 @@ SemVer.prototype.inc = function(release) {
         if (i === -1) // didn't increment anything
           this.prerelease.push(0);
       }
+      if (identifier) {
+        // 1.2.0-beta.1 bumps to 1.2.0-beta.2,
+        // 1.2.0-beta.fooblz or 1.2.0-beta bumps to 1.2.0-beta.0
+        if (this.prerelease[0] === identifier) {
+          if (isNaN(this.prerelease[1]))
+            this.prerelease = [identifier, 0];
+        } else
+          this.prerelease = [identifier, 0];
+      }
       break;
 
     default:
@@ -400,14 +499,46 @@ SemVer.prototype.inc = function(release) {
 };
 
 exports.inc = inc;
-function inc(version, release, loose) {
+function inc(version, release, loose, identifier) {
+  if (typeof(loose) === 'string') {
+    identifier = loose;
+    loose = undefined;
+  }
+
   try {
-    return new SemVer(version, loose).inc(release).version;
+    return new SemVer(version, loose).inc(release, identifier).version;
   } catch (er) {
     return null;
   }
 }
 
+exports.diff = diff;
+function diff(version1, version2) {
+  if (eq(version1, version2)) {
+    return null;
+  } else {
+    var v1 = parse(version1);
+    var v2 = parse(version2);
+    if (v1.prerelease.length || v2.prerelease.length) {
+      for (var key in v1) {
+        if (key === 'major' || key === 'minor' || key === 'patch') {
+          if (v1[key] !== v2[key]) {
+            return 'pre'+key;
+          }
+        }
+      }
+      return 'prerelease';
+    }
+    for (var key in v1) {
+      if (key === 'major' || key === 'minor' || key === 'patch') {
+        if (v1[key] !== v2[key]) {
+          return key;
+        }
+      }
+    }
+  }
+}
+
 exports.compareIdentifiers = compareIdentifiers;
 
 var numeric = /^[0-9]+$/;
@@ -432,6 +563,21 @@ function rcompareIdentifiers(a, b) {
   return compareIdentifiers(b, a);
 }
 
+exports.major = major;
+function major(a, loose) {
+  return new SemVer(a, loose).major;
+}
+
+exports.minor = minor;
+function minor(a, loose) {
+  return new SemVer(a, loose).minor;
+}
+
+exports.patch = patch;
+function patch(a, loose) {
+  return new SemVer(a, loose).patch;
+}
+
 exports.compare = compare;
 function compare(a, b, loose) {
   return new SemVer(a, loose).compare(b);
@@ -495,8 +641,16 @@ exports.cmp = cmp;
 function cmp(a, op, b, loose) {
   var ret;
   switch (op) {
-    case '===': ret = a === b; break;
+    case '===':
-    case '!==': ret = a !== b; break;
+      if (typeof a === 'object') a = a.version;
+      if (typeof b === 'object') b = b.version;
+      ret = a === b;
+      break;
+    case '!==':
+      if (typeof a === 'object') a = a.version;
+      if (typeof b === 'object') b = b.version;
+      ret = a !== b;
+      break;
     case '': case '=': case '==': ret = eq(a, b, loose); break;
     case '!=': ret = neq(a, b, loose); break;
     case '>': ret = gt(a, b, loose); break;
@@ -528,6 +682,8 @@ function Comparator(comp, loose) {
     this.value = '';
   else
     this.value = this.operator + this.semver.version;
+
+  debug('comp', this);
 }
 
 var ANY = {};
@@ -539,24 +695,14 @@ Comparator.prototype.parse = function(comp) {
     throw new TypeError('Invalid comparator: ' + comp);
 
   this.operator = m[1];
+  if (this.operator === '=')
+    this.operator = '';
+
   // if it literally is just '>' or '' then allow anything.
   if (!m[2])
     this.semver = ANY;
-  else {
+  else
     this.semver = new SemVer(m[2], this.loose);
-
-    // <1.2.3-rc DOES allow 1.2.3-beta (has prerelease)
-    // >=1.2.3 DOES NOT allow 1.2.3-beta
-    // <=1.2.3 DOES allow 1.2.3-beta
-    // However, <1.2.3 does NOT allow 1.2.3-beta,
-    // even though `1.2.3-beta < 1.2.3`
-    // The assumption is that the 1.2.3 version has something you
-    // *don't* want, so we push the prerelease down to the minimum.
-    if (this.operator === '<' && !this.semver.prerelease.length) {
-      this.semver.prerelease = ['0'];
-      this.semver.format();
-    }
-  }
 };
 
 Comparator.prototype.inspect = function() {
@@ -569,8 +715,14 @@ Comparator.prototype.toString = function() {
 
 Comparator.prototype.test = function(version) {
   debug('Comparator.test', version, this.loose);
-  return (this.semver === ANY) ? true :
+
-         cmp(version, this.operator, this.semver, this.loose);
+  if (this.semver === ANY)
+    return true;
+
+  if (typeof version === 'string')
+    version = new SemVer(version, this.loose);
+
+  return cmp(version, this.operator, this.semver, this.loose);
 };
 
 
@@ -707,20 +859,20 @@ function replaceTilde(comp, loose) {
     if (isX(M))
       ret = '';
     else if (isX(m))
-      ret = '>=' + M + '.0.0-0 <' + (+M + 1) + '.0.0-0';
+      ret = '>=' + M + '.0.0 <' + (+M + 1) + '.0.0';
     else if (isX(p))
       // ~1.2 == >=1.2.0- <1.3.0-
-      ret = '>=' + M + '.' + m + '.0-0 <' + M + '.' + (+m + 1) + '.0-0';
+      ret = '>=' + M + '.' + m + '.0 <' + M + '.' + (+m + 1) + '.0';
     else if (pr) {
       debug('replaceTilde pr', pr);
       if (pr.charAt(0) !== '-')
         pr = '-' + pr;
       ret = '>=' + M + '.' + m + '.' + p + pr +
-            ' <' + M + '.' + (+m + 1) + '.0-0';
+            ' <' + M + '.' + (+m + 1) + '.0';
     } else
-      // ~1.2.3 == >=1.2.3-0 <1.3.0-0
+      // ~1.2.3 == >=1.2.3 <1.3.0
-      ret = '>=' + M + '.' + m + '.' + p + '-0' +
+      ret = '>=' + M + '.' + m + '.' + p +
-            ' <' + M + '.' + (+m + 1) + '.0-0';
+            ' <' + M + '.' + (+m + 1) + '.0';
 
     debug('tilde return', ret);
     return ret;
@@ -740,6 +892,7 @@ function replaceCarets(comp, loose) {
 }
 
 function replaceCaret(comp, loose) {
+  debug('caret', comp, loose);
   var r = loose ? re[CARETLOOSE] : re[CARET];
   return comp.replace(r, function(_, M, m, p, pr) {
     debug('caret', comp, _, M, m, p, pr);
@@ -748,35 +901,38 @@ function replaceCaret(comp, loose) {
     if (isX(M))
       ret = '';
     else if (isX(m))
-      ret = '>=' + M + '.0.0-0 <' + (+M + 1) + '.0.0-0';
+      ret = '>=' + M + '.0.0 <' + (+M + 1) + '.0.0';
     else if (isX(p)) {
       if (M === '0')
-        ret = '>=' + M + '.' + m + '.0-0 <' + M + '.' + (+m + 1) + '.0-0';
+        ret = '>=' + M + '.' + m + '.0 <' + M + '.' + (+m + 1) + '.0';
       else
-        ret = '>=' + M + '.' + m + '.0-0 <' + (+M + 1) + '.0.0-0';
+        ret = '>=' + M + '.' + m + '.0 <' + (+M + 1) + '.0.0';
     } else if (pr) {
       debug('replaceCaret pr', pr);
       if (pr.charAt(0) !== '-')
         pr = '-' + pr;
       if (M === '0') {
         if (m === '0')
-          ret = '=' + M + '.' + m + '.' + p + pr;
+          ret = '>=' + M + '.' + m + '.' + p + pr +
+                ' <' + M + '.' + m + '.' + (+p + 1);
         else
           ret = '>=' + M + '.' + m + '.' + p + pr +
-                ' <' + M + '.' + (+m + 1) + '.0-0';
+                ' <' + M + '.' + (+m + 1) + '.0';
       } else
         ret = '>=' + M + '.' + m + '.' + p + pr +
-              ' <' + (+M + 1) + '.0.0-0';
+              ' <' + (+M + 1) + '.0.0';
     } else {
+      debug('no pr');
       if (M === '0') {
         if (m === '0')
-          ret = '=' + M + '.' + m + '.' + p;
+          ret = '>=' + M + '.' + m + '.' + p +
+                ' <' + M + '.' + m + '.' + (+p + 1);
         else
-          ret = '>=' + M + '.' + m + '.' + p + '-0' +
+          ret = '>=' + M + '.' + m + '.' + p +
-                ' <' + M + '.' + (+m + 1) + '.0-0';
+                ' <' + M + '.' + (+m + 1) + '.0';
       } else
-        ret = '>=' + M + '.' + m + '.' + p + '-0' +
+        ret = '>=' + M + '.' + m + '.' + p +
-              ' <' + (+M + 1) + '.0.0-0';
+              ' <' + (+M + 1) + '.0.0';
     }
 
     debug('caret return', ret);
@@ -804,23 +960,27 @@ function replaceXRange(comp, loose) {
     if (gtlt === '=' && anyX)
       gtlt = '';
 
-    if (gtlt && anyX) {
+    if (xM) {
-      // replace X with 0, and then append the -0 min-prerelease
+      if (gtlt === '>' || gtlt === '<') {
-      if (xM)
+        // nothing is allowed
-        M = 0;
+        ret = '<0.0.0';
+      } else {
+        // nothing is forbidden
+        ret = '*';
+      }
+    } else if (gtlt && anyX) {
+      // replace X with 0
       if (xm)
         m = 0;
       if (xp)
         p = 0;
 
       if (gtlt === '>') {
-        // >1 => >=2.0.0-0
+        // >1 => >=2.0.0
-        // >1.2 => >=1.3.0-0
+        // >1.2 => >=1.3.0
-        // >1.2.3 => >= 1.2.4-0
+        // >1.2.3 => >= 1.2.4
         gtlt = '>=';
-        if (xM) {
+        if (xm) {
-          // no change
-        } else if (xm) {
           M = +M + 1;
           m = 0;
           p = 0;
@@ -828,20 +988,21 @@ function replaceXRange(comp, loose) {
           m = +m + 1;
           p = 0;
         }
+      } else if (gtlt === '<=') {
+        // <=0.7.x is actually <0.8.0, since any 0.7.x should
+        // pass.  Similarly, <=7.x is actually <8.0.0, etc.
+        gtlt = '<'
+        if (xm)
+          M = +M + 1
+        else
+          m = +m + 1
       }
 
-
+      ret = gtlt + M + '.' + m + '.' + p;
-      ret = gtlt + M + '.' + m + '.' + p + '-0';
-    } else if (xM) {
-      // allow any
-      ret = '*';
     } else if (xm) {
-      // append '-0' onto the version, otherwise
+      ret = '>=' + M + '.0.0 <' + (+M + 1) + '.0.0';
-      // '1.x.x' matches '2.0.0-beta', since the tag
-      // *lowers* the version value
-      ret = '>=' + M + '.0.0-0 <' + (+M + 1) + '.0.0-0';
     } else if (xp) {
-      ret = '>=' + M + '.' + m + '.0-0 <' + M + '.' + (+m + 1) + '.0-0';
+      ret = '>=' + M + '.' + m + '.0 <' + M + '.' + (+m + 1) + '.0';
     }
 
     debug('xRange return', ret);
@@ -860,9 +1021,9 @@ function replaceStars(comp, loose) {
 
 // This function is passed to string.replace(re[HYPHENRANGE])
 // M, m, patch, prerelease, build
-// 1.2 - 3.4.5 => >=1.2.0-0 <=3.4.5
+// 1.2 - 3.4.5 => >=1.2.0 <=3.4.5
-// 1.2.3 - 3.4 => >=1.2.0-0 <3.5.0-0 Any 3.4.x will do
+// 1.2.3 - 3.4 => >=1.2.0 <3.5.0 Any 3.4.x will do
-// 1.2 - 3.4 => >=1.2.0-0 <3.5.0-0
+// 1.2 - 3.4 => >=1.2.0 <3.5.0
 function hyphenReplace($0,
                        from, fM, fm, fp, fpr, fb,
                        to, tM, tm, tp, tpr, tb) {
@@ -870,18 +1031,18 @@ function hyphenReplace($0,
   if (isX(fM))
     from = '';
   else if (isX(fm))
-    from = '>=' + fM + '.0.0-0';
+    from = '>=' + fM + '.0.0';
   else if (isX(fp))
-    from = '>=' + fM + '.' + fm + '.0-0';
+    from = '>=' + fM + '.' + fm + '.0';
   else
     from = '>=' + from;
 
   if (isX(tM))
     to = '';
   else if (isX(tm))
-    to = '<' + (+tM + 1) + '.0.0-0';
+    to = '<' + (+tM + 1) + '.0.0';
   else if (isX(tp))
-    to = '<' + tM + '.' + (+tm + 1) + '.0-0';
+    to = '<' + tM + '.' + (+tm + 1) + '.0';
   else if (tpr)
     to = '<=' + tM + '.' + tm + '.' + tp + '-' + tpr;
   else
@@ -895,6 +1056,10 @@ function hyphenReplace($0,
 Range.prototype.test = function(version) {
   if (!version)
     return false;
+
+  if (typeof version === 'string')
+    version = new SemVer(version, this.loose);
+
   for (var i = 0; i < this.set.length; i++) {
     if (testSet(this.set[i], version))
       return true;
@@ -907,6 +1072,31 @@ function testSet(set, version) {
     if (!set[i].test(version))
       return false;
   }
+
+  if (version.prerelease.length) {
+    // Find the set of versions that are allowed to have prereleases
+    // For example, ^1.2.3-pr.1 desugars to >=1.2.3-pr.1 <2.0.0
+    // That should allow `1.2.3-pr.2` to pass.
+    // However, `1.2.4-alpha.notready` should NOT be allowed,
+    // even though it's within the range set by the comparators.
+    for (var i = 0; i < set.length; i++) {
+      debug(set[i].semver);
+      if (set[i].semver === ANY)
+        return true;
+
+      if (set[i].semver.prerelease.length > 0) {
+        var allowed = set[i].semver;
+        if (allowed.major === version.major &&
+            allowed.minor === version.minor &&
+            allowed.patch === version.patch)
+          return true;
+      }
+    }
+
+    // Version has a -pre, but it's not one of the ones we like.
+    return false;
+  }
+
   return true;
 }
 
@@ -1022,5 +1212,6 @@ function outside(version, range, hilo, loose) {
 // Use the define() function if we're in AMD land
 if (typeof define === 'function' && define.amd)
   define(exports);
+
 // ***** MODIFIED LINE BELOW *****
 })();

js/extras/semver.js

@@ -20,6 +20,9 @@ if (typeof module === 'object' && module.exports === exports)
 // Not necessarily the package version of this code.
 exports.SEMVER_SPEC_VERSION = '2.0.0';
 
+var MAX_LENGTH = 256;
+var MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER || 9007199254740991;
+
 // The actual regexps go on exports.re
 var re = exports.re = [];
 var src = exports.src = [];
@@ -138,18 +141,18 @@ var XRANGEPLAIN = R++;
 src[XRANGEPLAIN] = '[v=\\s]*(' + src[XRANGEIDENTIFIER] + ')' +
                    '(?:\\.(' + src[XRANGEIDENTIFIER] + ')' +
                    '(?:\\.(' + src[XRANGEIDENTIFIER] + ')' +
-                   '(?:(' + src[PRERELEASE] + ')' +
+                   '(?:' + src[PRERELEASE] + ')?' +
-                   ')?)?)?';
+                   src[BUILD] + '?' +
+                   ')?)?';
 
 var XRANGEPLAINLOOSE = R++;
 src[XRANGEPLAINLOOSE] = '[v=\\s]*(' + src[XRANGEIDENTIFIERLOOSE] + ')' +
                         '(?:\\.(' + src[XRANGEIDENTIFIERLOOSE] + ')' +
                         '(?:\\.(' + src[XRANGEIDENTIFIERLOOSE] + ')' +
-                        '(?:(' + src[PRERELEASELOOSE] + ')' +
+                        '(?:' + src[PRERELEASELOOSE] + ')?' +
-                        ')?)?)?';
+                        src[BUILD] + '?' +
+                        ')?)?';
 
-// >=2.x, for example, means >=2.0.0-0
-// <1.x would be the same as "<1.0.0-0", though.
 var XRANGE = R++;
 src[XRANGE] = '^' + src[GTLT] + '\\s*' + src[XRANGEPLAIN] + '$';
 var XRANGELOOSE = R++;
@@ -233,8 +236,24 @@ for (var i = 0; i < R; i++) {
 
 exports.parse = parse;
 function parse(version, loose) {
+  if (version instanceof SemVer)
+    return version;
+
+  if (typeof version !== 'string')
+    return null;
+
+  if (version.length > MAX_LENGTH)
+    return null;
+
   var r = loose ? re[LOOSE] : re[FULL];
-  return (r.test(version)) ? new SemVer(version, loose) : null;
+  if (!r.test(version))
+    return null;
+
+  try {
+    return new SemVer(version, loose);
+  } catch (er) {
+    return null;
+  }
 }
 
 exports.valid = valid;
@@ -246,7 +265,7 @@ function valid(version, loose) {
 
 exports.clean = clean;
 function clean(version, loose) {
-  var s = parse(version, loose);
+  var s = parse(version.trim().replace(/^[=v]+/, ''), loose);
   return s ? s.version : null;
 }
 
@@ -258,8 +277,13 @@ function SemVer(version, loose) {
       return version;
     else
       version = version.version;
+  } else if (typeof version !== 'string') {
+    throw new TypeError('Invalid Version: ' + version);
   }
 
+  if (version.length > MAX_LENGTH)
+    throw new TypeError('version is longer than ' + MAX_LENGTH + ' characters')
+
   if (!(this instanceof SemVer))
     return new SemVer(version, loose);
 
@@ -277,12 +301,26 @@ function SemVer(version, loose) {
   this.minor = +m[2];
   this.patch = +m[3];
 
+  if (this.major > MAX_SAFE_INTEGER || this.major < 0)
+    throw new TypeError('Invalid major version')
+
+  if (this.minor > MAX_SAFE_INTEGER || this.minor < 0)
+    throw new TypeError('Invalid minor version')
+
+  if (this.patch > MAX_SAFE_INTEGER || this.patch < 0)
+    throw new TypeError('Invalid patch version')
+
   // numberify any prerelease numeric ids
   if (!m[4])
     this.prerelease = [];
   else
     this.prerelease = m[4].split('.').map(function(id) {
-      return (/^[0-9]+$/.test(id)) ? +id : id;
+      if (/^[0-9]+$/.test(id)) {
+        var num = +id
+        if (num >= 0 && num < MAX_SAFE_INTEGER)
+          return num
+      }
+      return id;
     });
 
   this.build = m[5] ? m[5].split('.') : [];
@@ -330,7 +368,7 @@ 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 +389,72 @@ SemVer.prototype.comparePre = function(other) {
   } while (++i);
 };
 
-SemVer.prototype.inc = function(release) {
+// 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, identifier) {
   switch (release) {
-    case 'major':
+    case 'premajor':
+      this.prerelease.length = 0;
+      this.patch = 0;
+      this.minor = 0;
       this.major++;
-      this.minor = -1;
+      this.inc('pre', identifier);
-    case 'minor':
+      break;
+    case 'preminor':
+      this.prerelease.length = 0;
+      this.patch = 0;
       this.minor++;
-      this.patch = -1;
+      this.inc('pre', identifier);
+      break;
+    case 'prepatch':
+      // If this is already a prerelease, it will bump to the next version
+      // drop any prereleases that might already exist, since they are not
+      // relevant at this point.
+      this.prerelease.length = 0;
+      this.inc('patch', identifier);
+      this.inc('pre', identifier);
+      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', identifier);
+      this.inc('pre', identifier);
+      break;
+
+    case 'major':
+      // If this is a pre-major version, bump up to the same major version.
+      // Otherwise increment major.
+      // 1.0.0-5 bumps to 1.0.0
+      // 1.1.0 bumps to 2.0.0
+      if (this.minor !== 0 || this.patch !== 0 || this.prerelease.length === 0)
+        this.major++;
+      this.minor = 0;
+      this.patch = 0;
+      this.prerelease = [];
+      break;
+    case 'minor':
+      // If this is a pre-minor version, bump up to the same minor version.
+      // Otherwise increment minor.
+      // 1.2.0-5 bumps to 1.2.0
+      // 1.2.1 bumps to 1.3.0
+      if (this.patch !== 0 || this.prerelease.length === 0)
+        this.minor++;
+      this.patch = 0;
+      this.prerelease = [];
+      break;
     case '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 publicly.
+    // 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 {
@@ -377,6 +468,15 @@ SemVer.prototype.inc = function(release) {
         if (i === -1) // didn't increment anything
           this.prerelease.push(0);
       }
+      if (identifier) {
+        // 1.2.0-beta.1 bumps to 1.2.0-beta.2,
+        // 1.2.0-beta.fooblz or 1.2.0-beta bumps to 1.2.0-beta.0
+        if (this.prerelease[0] === identifier) {
+          if (isNaN(this.prerelease[1]))
+            this.prerelease = [identifier, 0];
+        } else
+          this.prerelease = [identifier, 0];
+      }
       break;
 
     default:
@@ -387,14 +487,46 @@ SemVer.prototype.inc = function(release) {
 };
 
 exports.inc = inc;
-function inc(version, release, loose) {
+function inc(version, release, loose, identifier) {
+  if (typeof(loose) === 'string') {
+    identifier = loose;
+    loose = undefined;
+  }
+
   try {
-    return new SemVer(version, loose).inc(release).version;
+    return new SemVer(version, loose).inc(release, identifier).version;
   } catch (er) {
     return null;
   }
 }
 
+exports.diff = diff;
+function diff(version1, version2) {
+  if (eq(version1, version2)) {
+    return null;
+  } else {
+    var v1 = parse(version1);
+    var v2 = parse(version2);
+    if (v1.prerelease.length || v2.prerelease.length) {
+      for (var key in v1) {
+        if (key === 'major' || key === 'minor' || key === 'patch') {
+          if (v1[key] !== v2[key]) {
+            return 'pre'+key;
+          }
+        }
+      }
+      return 'prerelease';
+    }
+    for (var key in v1) {
+      if (key === 'major' || key === 'minor' || key === 'patch') {
+        if (v1[key] !== v2[key]) {
+          return key;
+        }
+      }
+    }
+  }
+}
+
 exports.compareIdentifiers = compareIdentifiers;
 
 var numeric = /^[0-9]+$/;
@@ -419,6 +551,21 @@ function rcompareIdentifiers(a, b) {
   return compareIdentifiers(b, a);
 }
 
+exports.major = major;
+function major(a, loose) {
+  return new SemVer(a, loose).major;
+}
+
+exports.minor = minor;
+function minor(a, loose) {
+  return new SemVer(a, loose).minor;
+}
+
+exports.patch = patch;
+function patch(a, loose) {
+  return new SemVer(a, loose).patch;
+}
+
 exports.compare = compare;
 function compare(a, b, loose) {
   return new SemVer(a, loose).compare(b);
@@ -482,8 +629,16 @@ exports.cmp = cmp;
 function cmp(a, op, b, loose) {
   var ret;
   switch (op) {
-    case '===': ret = a === b; break;
+    case '===':
-    case '!==': ret = a !== b; break;
+      if (typeof a === 'object') a = a.version;
+      if (typeof b === 'object') b = b.version;
+      ret = a === b;
+      break;
+    case '!==':
+      if (typeof a === 'object') a = a.version;
+      if (typeof b === 'object') b = b.version;
+      ret = a !== b;
+      break;
     case '': case '=': case '==': ret = eq(a, b, loose); break;
     case '!=': ret = neq(a, b, loose); break;
     case '>': ret = gt(a, b, loose); break;
@@ -515,6 +670,8 @@ function Comparator(comp, loose) {
     this.value = '';
   else
     this.value = this.operator + this.semver.version;
+
+  debug('comp', this);
 }
 
 var ANY = {};
@@ -526,24 +683,14 @@ Comparator.prototype.parse = function(comp) {
     throw new TypeError('Invalid comparator: ' + comp);
 
   this.operator = m[1];
+  if (this.operator === '=')
+    this.operator = '';
+
   // if it literally is just '>' or '' then allow anything.
   if (!m[2])
     this.semver = ANY;
-  else {
+  else
     this.semver = new SemVer(m[2], this.loose);
-
-    // <1.2.3-rc DOES allow 1.2.3-beta (has prerelease)
-    // >=1.2.3 DOES NOT allow 1.2.3-beta
-    // <=1.2.3 DOES allow 1.2.3-beta
-    // However, <1.2.3 does NOT allow 1.2.3-beta,
-    // even though `1.2.3-beta < 1.2.3`
-    // The assumption is that the 1.2.3 version has something you
-    // *don't* want, so we push the prerelease down to the minimum.
-    if (this.operator === '<' && !this.semver.prerelease.length) {
-      this.semver.prerelease = ['0'];
-      this.semver.format();
-    }
-  }
 };
 
 Comparator.prototype.inspect = function() {
@@ -556,8 +703,14 @@ Comparator.prototype.toString = function() {
 
 Comparator.prototype.test = function(version) {
   debug('Comparator.test', version, this.loose);
-  return (this.semver === ANY) ? true :
+
-         cmp(version, this.operator, this.semver, this.loose);
+  if (this.semver === ANY)
+    return true;
+
+  if (typeof version === 'string')
+    version = new SemVer(version, this.loose);
+
+  return cmp(version, this.operator, this.semver, this.loose);
 };
 
 
@@ -694,20 +847,20 @@ function replaceTilde(comp, loose) {
     if (isX(M))
       ret = '';
     else if (isX(m))
-      ret = '>=' + M + '.0.0-0 <' + (+M + 1) + '.0.0-0';
+      ret = '>=' + M + '.0.0 <' + (+M + 1) + '.0.0';
     else if (isX(p))
       // ~1.2 == >=1.2.0- <1.3.0-
-      ret = '>=' + M + '.' + m + '.0-0 <' + M + '.' + (+m + 1) + '.0-0';
+      ret = '>=' + M + '.' + m + '.0 <' + M + '.' + (+m + 1) + '.0';
     else if (pr) {
       debug('replaceTilde pr', pr);
       if (pr.charAt(0) !== '-')
         pr = '-' + pr;
       ret = '>=' + M + '.' + m + '.' + p + pr +
-            ' <' + M + '.' + (+m + 1) + '.0-0';
+            ' <' + M + '.' + (+m + 1) + '.0';
     } else
-      // ~1.2.3 == >=1.2.3-0 <1.3.0-0
+      // ~1.2.3 == >=1.2.3 <1.3.0
-      ret = '>=' + M + '.' + m + '.' + p + '-0' +
+      ret = '>=' + M + '.' + m + '.' + p +
-            ' <' + M + '.' + (+m + 1) + '.0-0';
+            ' <' + M + '.' + (+m + 1) + '.0';
 
     debug('tilde return', ret);
     return ret;
@@ -727,6 +880,7 @@ function replaceCarets(comp, loose) {
 }
 
 function replaceCaret(comp, loose) {
+  debug('caret', comp, loose);
   var r = loose ? re[CARETLOOSE] : re[CARET];
   return comp.replace(r, function(_, M, m, p, pr) {
     debug('caret', comp, _, M, m, p, pr);
@@ -735,35 +889,38 @@ function replaceCaret(comp, loose) {
     if (isX(M))
       ret = '';
     else if (isX(m))
-      ret = '>=' + M + '.0.0-0 <' + (+M + 1) + '.0.0-0';
+      ret = '>=' + M + '.0.0 <' + (+M + 1) + '.0.0';
     else if (isX(p)) {
       if (M === '0')
-        ret = '>=' + M + '.' + m + '.0-0 <' + M + '.' + (+m + 1) + '.0-0';
+        ret = '>=' + M + '.' + m + '.0 <' + M + '.' + (+m + 1) + '.0';
       else
-        ret = '>=' + M + '.' + m + '.0-0 <' + (+M + 1) + '.0.0-0';
+        ret = '>=' + M + '.' + m + '.0 <' + (+M + 1) + '.0.0';
     } else if (pr) {
       debug('replaceCaret pr', pr);
       if (pr.charAt(0) !== '-')
         pr = '-' + pr;
       if (M === '0') {
         if (m === '0')
-          ret = '=' + M + '.' + m + '.' + p + pr;
+          ret = '>=' + M + '.' + m + '.' + p + pr +
+                ' <' + M + '.' + m + '.' + (+p + 1);
         else
           ret = '>=' + M + '.' + m + '.' + p + pr +
-                ' <' + M + '.' + (+m + 1) + '.0-0';
+                ' <' + M + '.' + (+m + 1) + '.0';
       } else
         ret = '>=' + M + '.' + m + '.' + p + pr +
-              ' <' + (+M + 1) + '.0.0-0';
+              ' <' + (+M + 1) + '.0.0';
     } else {
+      debug('no pr');
       if (M === '0') {
         if (m === '0')
-          ret = '=' + M + '.' + m + '.' + p;
+          ret = '>=' + M + '.' + m + '.' + p +
+                ' <' + M + '.' + m + '.' + (+p + 1);
         else
-          ret = '>=' + M + '.' + m + '.' + p + '-0' +
+          ret = '>=' + M + '.' + m + '.' + p +
-                ' <' + M + '.' + (+m + 1) + '.0-0';
+                ' <' + M + '.' + (+m + 1) + '.0';
       } else
-        ret = '>=' + M + '.' + m + '.' + p + '-0' +
+        ret = '>=' + M + '.' + m + '.' + p +
-              ' <' + (+M + 1) + '.0.0-0';
+              ' <' + (+M + 1) + '.0.0';
     }
 
     debug('caret return', ret);
@@ -791,23 +948,27 @@ function replaceXRange(comp, loose) {
     if (gtlt === '=' && anyX)
       gtlt = '';
 
-    if (gtlt && anyX) {
+    if (xM) {
-      // replace X with 0, and then append the -0 min-prerelease
+      if (gtlt === '>' || gtlt === '<') {
-      if (xM)
+        // nothing is allowed
-        M = 0;
+        ret = '<0.0.0';
+      } else {
+        // nothing is forbidden
+        ret = '*';
+      }
+    } else if (gtlt && anyX) {
+      // replace X with 0
       if (xm)
         m = 0;
       if (xp)
         p = 0;
 
       if (gtlt === '>') {
-        // >1 => >=2.0.0-0
+        // >1 => >=2.0.0
-        // >1.2 => >=1.3.0-0
+        // >1.2 => >=1.3.0
-        // >1.2.3 => >= 1.2.4-0
+        // >1.2.3 => >= 1.2.4
         gtlt = '>=';
-        if (xM) {
+        if (xm) {
-          // no change
-        } else if (xm) {
           M = +M + 1;
           m = 0;
           p = 0;
@@ -815,20 +976,21 @@ function replaceXRange(comp, loose) {
           m = +m + 1;
           p = 0;
         }
+      } else if (gtlt === '<=') {
+        // <=0.7.x is actually <0.8.0, since any 0.7.x should
+        // pass.  Similarly, <=7.x is actually <8.0.0, etc.
+        gtlt = '<'
+        if (xm)
+          M = +M + 1
+        else
+          m = +m + 1
       }
 
-
+      ret = gtlt + M + '.' + m + '.' + p;
-      ret = gtlt + M + '.' + m + '.' + p + '-0';
-    } else if (xM) {
-      // allow any
-      ret = '*';
     } else if (xm) {
-      // append '-0' onto the version, otherwise
+      ret = '>=' + M + '.0.0 <' + (+M + 1) + '.0.0';
-      // '1.x.x' matches '2.0.0-beta', since the tag
-      // *lowers* the version value
-      ret = '>=' + M + '.0.0-0 <' + (+M + 1) + '.0.0-0';
     } else if (xp) {
-      ret = '>=' + M + '.' + m + '.0-0 <' + M + '.' + (+m + 1) + '.0-0';
+      ret = '>=' + M + '.' + m + '.0 <' + M + '.' + (+m + 1) + '.0';
     }
 
     debug('xRange return', ret);
@@ -847,9 +1009,9 @@ function replaceStars(comp, loose) {
 
 // This function is passed to string.replace(re[HYPHENRANGE])
 // M, m, patch, prerelease, build
-// 1.2 - 3.4.5 => >=1.2.0-0 <=3.4.5
+// 1.2 - 3.4.5 => >=1.2.0 <=3.4.5
-// 1.2.3 - 3.4 => >=1.2.0-0 <3.5.0-0 Any 3.4.x will do
+// 1.2.3 - 3.4 => >=1.2.0 <3.5.0 Any 3.4.x will do
-// 1.2 - 3.4 => >=1.2.0-0 <3.5.0-0
+// 1.2 - 3.4 => >=1.2.0 <3.5.0
 function hyphenReplace($0,
                        from, fM, fm, fp, fpr, fb,
                        to, tM, tm, tp, tpr, tb) {
@@ -857,18 +1019,18 @@ function hyphenReplace($0,
   if (isX(fM))
     from = '';
   else if (isX(fm))
-    from = '>=' + fM + '.0.0-0';
+    from = '>=' + fM + '.0.0';
   else if (isX(fp))
-    from = '>=' + fM + '.' + fm + '.0-0';
+    from = '>=' + fM + '.' + fm + '.0';
   else
     from = '>=' + from;
 
   if (isX(tM))
     to = '';
   else if (isX(tm))
-    to = '<' + (+tM + 1) + '.0.0-0';
+    to = '<' + (+tM + 1) + '.0.0';
   else if (isX(tp))
-    to = '<' + tM + '.' + (+tm + 1) + '.0-0';
+    to = '<' + tM + '.' + (+tm + 1) + '.0';
   else if (tpr)
     to = '<=' + tM + '.' + tm + '.' + tp + '-' + tpr;
   else
@@ -882,6 +1044,10 @@ function hyphenReplace($0,
 Range.prototype.test = function(version) {
   if (!version)
     return false;
+
+  if (typeof version === 'string')
+    version = new SemVer(version, this.loose);
+
   for (var i = 0; i < this.set.length; i++) {
     if (testSet(this.set[i], version))
       return true;
@@ -894,6 +1060,31 @@ function testSet(set, version) {
     if (!set[i].test(version))
       return false;
   }
+
+  if (version.prerelease.length) {
+    // Find the set of versions that are allowed to have prereleases
+    // For example, ^1.2.3-pr.1 desugars to >=1.2.3-pr.1 <2.0.0
+    // That should allow `1.2.3-pr.2` to pass.
+    // However, `1.2.4-alpha.notready` should NOT be allowed,
+    // even though it's within the range set by the comparators.
+    for (var i = 0; i < set.length; i++) {
+      debug(set[i].semver);
+      if (set[i].semver === ANY)
+        return true;
+
+      if (set[i].semver.prerelease.length > 0) {
+        var allowed = set[i].semver;
+        if (allowed.major === version.major &&
+            allowed.minor === version.minor &&
+            allowed.patch === version.patch)
+          return true;
+      }
+    }
+
+    // Version has a -pre, but it's not one of the ones we like.
+    return false;
+  }
+
   return true;
 }