react app

react-app/node_modules/lodash/array/uniq.js

@@ -0,0 +1,71 @@
+var baseCallback = require('../internal/baseCallback'),
+    baseUniq = require('../internal/baseUniq'),
+    isIterateeCall = require('../internal/isIterateeCall'),
+    sortedUniq = require('../internal/sortedUniq');
+
+/**
+ * Creates a duplicate-free version of an array, using
+ * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
+ * for equality comparisons, in which only the first occurence of each element
+ * is kept. Providing `true` for `isSorted` performs a faster search algorithm
+ * for sorted arrays. If an iteratee function is provided it's invoked for
+ * each element in the array to generate the criterion by which uniqueness
+ * is computed. The `iteratee` is bound to `thisArg` and invoked with three
+ * arguments: (value, index, array).
+ *
+ * If a property name is provided for `iteratee` the created `_.property`
+ * style callback returns the property value of the given element.
+ *
+ * If a value is also provided for `thisArg` the created `_.matchesProperty`
+ * style callback returns `true` for elements that have a matching property
+ * value, else `false`.
+ *
+ * If an object is provided for `iteratee` the created `_.matches` style
+ * callback returns `true` for elements that have the properties of the given
+ * object, else `false`.
+ *
+ * @static
+ * @memberOf _
+ * @alias unique
+ * @category Array
+ * @param {Array} array The array to inspect.
+ * @param {boolean} [isSorted] Specify the array is sorted.
+ * @param {Function|Object|string} [iteratee] The function invoked per iteration.
+ * @param {*} [thisArg] The `this` binding of `iteratee`.
+ * @returns {Array} Returns the new duplicate-value-free array.
+ * @example
+ *
+ * _.uniq([2, 1, 2]);
+ * // => [2, 1]
+ *
+ * // using `isSorted`
+ * _.uniq([1, 1, 2], true);
+ * // => [1, 2]
+ *
+ * // using an iteratee function
+ * _.uniq([1, 2.5, 1.5, 2], function(n) {
+ *   return this.floor(n);
+ * }, Math);
+ * // => [1, 2.5]
+ *
+ * // using the `_.property` callback shorthand
+ * _.uniq([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
+ * // => [{ 'x': 1 }, { 'x': 2 }]
+ */
+function uniq(array, isSorted, iteratee, thisArg) {
+  var length = array ? array.length : 0;
+  if (!length) {
+    return [];
+  }
+  if (isSorted != null && typeof isSorted != 'boolean') {
+    thisArg = iteratee;
+    iteratee = isIterateeCall(array, isSorted, thisArg) ? undefined : isSorted;
+    isSorted = false;
+  }
+  iteratee = iteratee == null ? iteratee : baseCallback(iteratee, thisArg, 3);
+  return (isSorted)
+    ? sortedUniq(array, iteratee)
+    : baseUniq(array, iteratee);
+}
+
+module.exports = uniq;