support array lookup syntax, better test coverage

src/private/get.js

@@ -1,10 +1,17 @@
-const get = (object, keys = '') => {
+const get = (object, keys) => {
   if (!object) { object = {} }
-  keys = Array.isArray(keys) ? keys : keys.replace(/\[(['"]?)([\w\d-]+)(['"]?)\]/g, '.$2').split('.')
+
+  keys = Array.isArray(keys) ? keys : `${keys}`
+    .replace(/\[['"]?([\w\d-]+)['"]?\]/g, '.$1')
+    .split('.')
+    .filter(x => x)
+
   object = object[keys[0]]
+
   if (object && keys.length > 1) {
     return get(object, keys.slice(1))
   }
+
   return object
 }
 

src/private/get.spec.js

@@ -62,6 +62,32 @@ describe('get', () => {
     expect(actual).toEqual(expected)
   })
 
+  it('should return undefined if not provided a selector', () => {
+    const data = {
+      foo: { 'ba-ar': 'bars' }
+    }
+    const actual = get(data)
+    const expected = undefined
+
+    expect(actual).toEqual(expected)
+  })
+
+  it('should allow lookups in arrays', () => {
+    const greenArr = [
+      '[1]',
+      '1',
+      1
+    ]
+
+    const data = ['foo', 'bar']
+    const expected = 'bar'
+
+    greenArr.forEach((x) => {
+      const actual = get(data, x)
+      expect(actual).toEqual(expected)
+    })
+  })
+
   it('should return undefined when called with bad data', () => {
     const redArr = [
       undefined,