Bump to v4.0.0.

internal/basePullAllBy.js

@@ -0,0 +1,43 @@
+import arrayMap from './arrayMap';
+import baseIndexOf from './baseIndexOf';
+
+/** Used for built-in method references. */
+var arrayProto = Array.prototype;
+
+/** Built-in value references. */
+var splice = arrayProto.splice;
+
+/**
+ * The base implementation of `_.pullAllBy` without support for iteratee
+ * shorthands.
+ *
+ * @private
+ * @param {Array} array The array to modify.
+ * @param {Array} values The values to remove.
+ * @param {Function} [iteratee] The iteratee invoked per element.
+ * @returns {Array} Returns `array`.
+ */
+function basePullAllBy(array, values, iteratee) {
+  var index = -1,
+      length = values.length,
+      seen = array;
+
+  if (iteratee) {
+    seen = arrayMap(array, function(value) { return iteratee(value); });
+  }
+  while (++index < length) {
+    var fromIndex = 0,
+        value = values[index],
+        computed = iteratee ? iteratee(value) : value;
+
+    while ((fromIndex = baseIndexOf(seen, computed, fromIndex)) > -1) {
+      if (seen !== array) {
+        splice.call(seen, fromIndex, 1);
+      }
+      splice.call(array, fromIndex, 1);
+    }
+  }
+  return array;
+}
+
+export default basePullAllBy;