feat(has): Add module has

Checks if an object has assigned a value to a property. Note that it will also return true to
has('foo', { foo: undefined }).

src/__tests__/has.js

@@ -0,0 +1,7 @@
+import has from '../has';
+
+test('Core.has', () => {
+  expect(has('foo', { foo: 1 })).toBeTruthy();
+  expect(has('foo', { foo: undefined })).toBeTruthy();
+  expect(has('foo', {})).toBeFalsy();
+});

src/has.js

@@ -0,0 +1 @@
+export default (prop, obj) => Object.prototype.hasOwnProperty.call(obj, prop);

src/index.js

@@ -7,6 +7,7 @@ import curry from './curry';
 import filter from './filter';
 import find from './find';
 import findIndex from './findIndex';
+import has from './has';
 import head from './head';
 import is from './is';
 import isArray from './isArray';
@@ -37,6 +38,7 @@ export {
   filter,
   find,
   findIndex,
+  has,
   head,
   is,
   isArray,