Refactor Jest scripts directory structure

Introduces a more consistent naming scheme.

scripts/jest/config.source.js

@@ -8,11 +8,8 @@ module.exports = {
   transform: {
     '.*': require.resolve('./preprocessor.js'),
   },
-  setupFiles: [
-    require.resolve('./setup.js'),
-    require.resolve('./environment.js'),
-  ],
-  setupTestFrameworkScriptFile: require.resolve('./test-framework-setup.js'),
+  setupFiles: [require.resolve('./setupEnvironment.js')],
+  setupTestFrameworkScriptFile: require.resolve('./setupTests.js'),
   testRegex: '/__tests__/.*(\\.js|\\.coffee|[^d]\\.ts)$',
   moduleFileExtensions: ['js', 'json', 'node', 'coffee', 'ts'],
   rootDir: process.cwd(),

scripts/jest/preprocessor.js

@@ -5,7 +5,7 @@ var path = require('path');
 var babel = require('babel-core');
 var coffee = require('coffee-script');
 
-var tsPreprocessor = require('./ts-preprocessor');
+var tsPreprocessor = require('./typescript/preprocessor');
 var createCacheKeyFunction = require('fbjs-scripts/jest/createCacheKeyFunction');
 
 // Use require.resolve to be resilient to file moves, npm updates, etc

scripts/jest/environment.js → scripts/jest/setupEnvironment.js

@@ -1,5 +1,16 @@
 /* eslint-disable */
 
+jest.mock('shared/ReactFeatureFlags', () => {
+  // We can alter flags based on environment here
+  // (e.g. for CI runs with different flags).
+  return require.requireActual('shared/ReactFeatureFlags');
+});
+
+// Error logging varies between Fiber and Stack;
+// Rather than fork dozens of tests, mock the error-logging file by default.
+// TODO: direct imports like some-package/src/* are bad. Fix me.
+jest.mock('react-reconciler/src/ReactFiberErrorLogger');
+
 const NODE_ENV = process.env.NODE_ENV;
 if (NODE_ENV !== 'development' && NODE_ENV !== 'production') {
   throw new Error('NODE_ENV must either be set to development or production.');

scripts/jest/test-framework-setup.js → scripts/jest/setupTests.js

@@ -3,7 +3,7 @@
 if (process.env.REACT_CLASS_EQUIVALENCE_TEST) {
   // Inside the class equivalence tester, we have a custom environment, let's
   // require that instead.
-  require('./setupSpecEquivalenceReporter.js');
+  require('./spec-equivalence-reporter/setupTests.js');
 } else {
   var env = jasmine.getEnv();
   var errorMap = require('../error-codes/codes.json');