react app

react-app/node_modules/lodash/internal/baseDifference.js

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+var baseIndexOf = require('./baseIndexOf'),
+    cacheIndexOf = require('./cacheIndexOf'),
+    createCache = require('./createCache');
+
+/** Used as the size to enable large array optimizations. */
+var LARGE_ARRAY_SIZE = 200;
+
+/**
+ * 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 >= LARGE_ARRAY_SIZE) ? createCache(values) : null,
+      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) < 0) {
+      result.push(value);
+    }
+  }
+  return result;
+}
+
+module.exports = baseDifference;