Run js-flipper tests on GH (#3298)

Summary: Pull Request resolved: https://github.com/facebook/flipper/pull/3298

Reviewed By: passy

Differential Revision: D33620152

fbshipit-source-id: 3ed14dd8a4813f9e3e8b62774d6969c52348e6d1

js/js-flipper/jest.config.js

@@ -10,6 +10,6 @@
 module.exports = {
   preset: 'ts-jest',
   clearMocks: true,
-  coverageReporters: ['json-summary', 'lcov', 'html'],
+  coverageReporters: ['json-summary', 'lcov', 'html', 'text-summary'],
   testMatch: ['**/**.spec.(js|jsx|ts|tsx)'],
 };