chore: upgrade to jest@24 thus removing babel 6 dependency (#268)

Author: mohsinulhaq

.size-snapshot.json

@@ -1,18 +1,18 @@
 {
   "dist/index.umd.js": {
-    "bundled": 52103,
-    "minified": 17714,
-    "gzipped": 5679
+    "bundled": 52221,
+    "minified": 17785,
+    "gzipped": 5683
   },
   "dist/index.umd.min.js": {
-    "bundled": 26115,
-    "minified": 9983,
-    "gzipped": 3433
+    "bundled": 26233,
+    "minified": 10054,
+    "gzipped": 3437
   },
   "dist/index.esm.js": {
-    "bundled": 11160,
-    "minified": 6668,
-    "gzipped": 1850,
+    "bundled": 11275,
+    "minified": 6748,
+    "gzipped": 1854,
     "treeshaked": {
       "rollup": {
         "code": 3718,

.travis.yml

@@ -1,4 +1,7 @@
+dist: xenial
 language: node_js
 node_js:
-  - "9"
+  - '--lts'
 cache: yarn
+before_install:
+  yarn config set ignore-engines true

package.json

@@ -33,7 +33,7 @@
     "prepublishOnly": "git-branch-is master"
   },
   "jest": {
-    "setupTestFrameworkScriptFile": "<rootDir>jest.setup.js",
+    "setupFilesAfterEnv": ["<rootDir>jest.setup.js"],
     "snapshotSerializers": [
       "enzyme-to-json/serializer"
     ]
@@ -77,9 +77,8 @@
     "@babel/preset-react": "^7.0.0",
     "@babel/preset-stage-2": "^7.0.0",
     "@types/react": "^16.1.0",
-    "babel-core": "^7.0.0-bridge.0",
     "babel-eslint": "^10.0.1",
-    "babel-jest": "^23.6.0",
+    "babel-jest": "^24.0.0",
     "cross-env": "^5.1.4",
     "emotion": "^9.1.1",
     "enzyme": "^3.3.0",
@@ -95,7 +94,7 @@
     "flow-copy-source": "^1.3.0",
     "gh-pages": "^1.1.0",
     "git-branch-is": "^0.1.0",
-    "jest": "^22.4.3",
+    "jest": "^24.0.0",
     "parcel-bundler": "^1.10.1",
     "prettier": "^1.11.1",
     "pretty-quick": "^1.4.1",

src/__snapshots__/Reference.test.js.snap

@@ -11,6 +11,12 @@ exports[`Arrow component renders the expected markup 1`] = `
             <div />,
           ],
         ],
+        "results": Array [
+          Object {
+            "type": "return",
+            "value": undefined,
+          },
+        ],
       },
     }
   }
@@ -25,6 +31,12 @@ exports[`Arrow component renders the expected markup 1`] = `
                 <div />,
               ],
             ],
+            "results": Array [
+              Object {
+                "type": "return",
+                "value": undefined,
+              },
+            ],
           }
         }
       >