add hw2

node_modules/ramda/es/isNil.js

@@ -0,0 +1,26 @@
+import _curry1 from "./internal/_curry1.js";
+/**
+ * Checks if the input value is `null` or `undefined`.
+ *
+ * @func
+ * @memberOf R
+ * @since v0.9.0
+ * @category Type
+ * @sig * -> Boolean
+ * @param {*} x The value to test.
+ * @return {Boolean} `true` if `x` is `undefined` or `null`, otherwise `false`.
+ * @example
+ *
+ *      R.isNil(null); //=> true
+ *      R.isNil(undefined); //=> true
+ *      R.isNil(0); //=> false
+ *      R.isNil([]); //=> false
+ */
+
+var isNil =
+/*#__PURE__*/
+_curry1(function isNil(x) {
+  return x == null;
+});
+
+export default isNil;