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1 files changed, 71 insertions, 0 deletions

diff --git a/node_modules/html-minifier/src/tokenchain.js b/node_modules/html-minifier/src/tokenchain.js
new file mode 100644
index 00000000..f8892d01
--- /dev/null
+++ b/node_modules/html-minifier/src/tokenchain.js
@@ -0,0 +1,71 @@
+'use strict';
+
+function Sorter() {
+}
+
+Sorter.prototype.sort = function(tokens, fromIndex) {
+  fromIndex = fromIndex || 0;
+  for (var i = 0, len = this.keys.length; i < len; i++) {
+    var key = this.keys[i];
+    var token = key.slice(1);
+    var index = tokens.indexOf(token, fromIndex);
+    if (index !== -1) {
+      do {
+        if (index !== fromIndex) {
+          tokens.splice(index, 1);
+          tokens.splice(fromIndex, 0, token);
+        }
+        fromIndex++;
+      } while ((index = tokens.indexOf(token, fromIndex)) !== -1);
+      return this[key].sort(tokens, fromIndex);
+    }
+  }
+  return tokens;
+};
+
+function TokenChain() {
+}
+
+TokenChain.prototype = {
+  add: function(tokens) {
+    var self = this;
+    tokens.forEach(function(token) {
+      var key = '$' + token;
+      if (!self[key]) {
+        self[key] = [];
+        self[key].processed = 0;
+      }
+      self[key].push(tokens);
+    });
+  },
+  createSorter: function() {
+    var self = this;
+    var sorter = new Sorter();
+    sorter.keys = Object.keys(self).sort(function(j, k) {
+      var m = self[j].length;
+      var n = self[k].length;
+      return m < n ? 1 : m > n ? -1 : j < k ? -1 : j > k ? 1 : 0;
+    }).filter(function(key) {
+      if (self[key].processed < self[key].length) {
+        var token = key.slice(1);
+        var chain = new TokenChain();
+        self[key].forEach(function(tokens) {
+          var index;
+          while ((index = tokens.indexOf(token)) !== -1) {
+            tokens.splice(index, 1);
+          }
+          tokens.forEach(function(token) {
+            self['$' + token].processed++;
+          });
+          chain.add(tokens.slice(0));
+        });
+        sorter[key] = chain.createSorter();
+        return true;
+      }
+      return false;
+    });
+    return sorter;
+  }
+};
+
+module.exports = TokenChain;