add hw2

node_modules/ramda/es/mergeWithKey.js

@@ -0,0 +1,50 @@
+import _curry3 from "./internal/_curry3.js";
+import _has from "./internal/_has.js";
+/**
+ * Creates a new object with the own properties of the two provided objects. If
+ * a key exists in both objects, the provided function is applied to the key
+ * and the values associated with the key in each object, with the result being
+ * used as the value associated with the key in the returned object.
+ *
+ * @func
+ * @memberOf R
+ * @since v0.19.0
+ * @category Object
+ * @sig ((String, a, a) -> a) -> {a} -> {a} -> {a}
+ * @param {Function} fn
+ * @param {Object} l
+ * @param {Object} r
+ * @return {Object}
+ * @see R.mergeDeepWithKey, R.merge, R.mergeWith
+ * @example
+ *
+ *      let concatValues = (k, l, r) => k == 'values' ? R.concat(l, r) : r
+ *      R.mergeWithKey(concatValues,
+ *                     { a: true, thing: 'foo', values: [10, 20] },
+ *                     { b: true, thing: 'bar', values: [15, 35] });
+ *      //=> { a: true, b: true, thing: 'bar', values: [10, 20, 15, 35] }
+ * @symb R.mergeWithKey(f, { x: 1, y: 2 }, { y: 5, z: 3 }) = { x: 1, y: f('y', 2, 5), z: 3 }
+ */
+
+var mergeWithKey =
+/*#__PURE__*/
+_curry3(function mergeWithKey(fn, l, r) {
+  var result = {};
+  var k;
+
+  for (k in l) {
+    if (_has(k, l)) {
+      result[k] = _has(k, r) ? fn(k, l[k], r[k]) : l[k];
+    }
+  }
+
+  for (k in r) {
+    if (_has(k, r) && !_has(k, result)) {
+      result[k] = r[k];
+    }
+  }
+
+  return result;
+});
+
+export default mergeWithKey;