getting tests to work with latest jest

Author: roblarsen

jest.config.js

@@ -1,8 +1,4 @@
 export default {
   transform: {},
-  moduleNameMapper: {
-    chalk: "chalk/source/index.js",
-    "#ansi-styles": "chalk/source/vendor/ansi-styles/index.js",
-    "#supports-color": "chalk/source/vendor/supports-color/index.js",
-  },
+  runner: "jest-light-runner",
 };