add hw2

node_modules/ramda/es/unwind.js

@@ -0,0 +1,45 @@
+import _curry2 from "./internal/_curry2.js";
+import _isArray from "./internal/_isArray.js";
+import _map from "./internal/_map.js";
+import _assoc from "./internal/_assoc.js";
+/**
+ *
+ * Deconstructs an array field from the input documents to output a document for each element.
+ * Each output document is the input document with the value of the array field replaced by the element.
+ *
+ * @func
+ * @memberOf R
+ * @since v0.28.0
+ * @category Object
+ * @sig String -> {k: [v]} -> [{k: v}]
+ * @param {String} key The key to determine which property of the object should be unwind
+ * @param {Object} object The object containing list under property named as key which is to unwind
+ * @return {List} A new list of object containing the value of input key having list replaced by each element in the object.
+ * @example
+ *
+ * R.unwind('hobbies', {
+ *   name: 'alice',
+ *   hobbies: ['Golf', 'Hacking'],
+ *   colors: ['red', 'green'],
+ * });
+ * // [
+ * //   { name: 'alice', hobbies: 'Golf', colors: ['red', 'green'] },
+ * //   { name: 'alice', hobbies: 'Hacking', colors: ['red', 'green'] }
+ * // ]
+ */
+
+var unwind =
+/*#__PURE__*/
+_curry2(function (key, object) {
+  // If key is not in object or key is not as a list in object
+  if (!(key in object && _isArray(object[key]))) {
+    return [object];
+  } // Map over object[key] which is a list and assoc each element with key
+
+
+  return _map(function (item) {
+    return _assoc(key, item, object);
+  }, object[key]);
+});
+
+export default unwind;