--- /dev/null
+var arrayMap = require('./_arrayMap'),
+ baseIndexOf = require('./_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;
+}
+
+module.exports = basePullAllBy;