1 files changed, 59 insertions, 0 deletions
diff --git a/node_modules/glob2base/index.js b/node_modules/glob2base/index.js
new file mode 100644
index 000000000..307e3f27c
--- /dev/null
+++ b/node_modules/glob2base/index.js
@@ -0,0 +1,59 @@
+'use strict';
+
+var path = require('path');
+var findIndex = require('find-index');
+
+var flattenGlob = function(arr){
+  var out = [];
+  var flat = true;
+  for(var i = 0; i < arr.length; i++) {
+    if (typeof arr[i] !== 'string') {
+      flat = false;
+      break;
+    }
+    out.push(arr[i]);
+  }
+
+  // last one is a file or specific dir
+  // so we pop it off
+  if (flat) {
+    out.pop();
+  }
+  return out;
+};
+
+var flattenExpansion = function(set) {
+  var first = set[0];
+  var toCompare = set.slice(1);
+
+  // find index where the diff is
+  var idx = findIndex(first, function(v, idx){
+    if (typeof v !== 'string') {
+      return true;
+    }
+
+    var matched = toCompare.every(function(arr){
+      return v === arr[idx];
+    });
+
+    return !matched;
+  });
+
+  return first.slice(0, idx);
+};
+
+var setToBase = function(set) {
+  // normal something/*.js
+  if (set.length <= 1) {
+    return flattenGlob(set[0]);
+  }
+  // has expansion
+  return flattenExpansion(set);
+};
+
+module.exports = function(glob) {
+  var set = glob.minimatch.set;
+  var baseParts = setToBase(set);
+  var basePath = path.normalize(baseParts.join(path.sep))+path.sep;
+  return basePath;
+};