Bump to v3.0.0.

internal/baseDifference.js

@@ -0,0 +1,52 @@
+import baseIndexOf from './baseIndexOf';
+import cacheIndexOf from './cacheIndexOf';
+import createCache from './createCache';
+
+/**
+ * The base implementation of `_.difference` which accepts a single array
+ * of values to exclude.
+ *
+ * @private
+ * @param {Array} array The array to inspect.
+ * @param {Array} values The values to exclude.
+ * @returns {Array} Returns the new array of filtered values.
+ */
+function baseDifference(array, values) {
+  var length = array ? array.length : 0,
+      result = [];
+
+  if (!length) {
+    return result;
+  }
+  var index = -1,
+      indexOf = baseIndexOf,
+      isCommon = true,
+      cache = isCommon && values.length >= 200 && createCache(values),
+      valuesLength = values.length;
+
+  if (cache) {
+    indexOf = cacheIndexOf;
+    isCommon = false;
+    values = cache;
+  }
+  outer:
+  while (++index < length) {
+    var value = array[index];
+
+    if (isCommon && value === value) {
+      var valuesIndex = valuesLength;
+      while (valuesIndex--) {
+        if (values[valuesIndex] === value) {
+          continue outer;
+        }
+      }
+      result.push(value);
+    }
+    else if (indexOf(values, value) < 0) {
+      result.push(value);
+    }
+  }
+  return result;
+}
+
+export default baseDifference;