diff --git a/babel.config.js b/babel.config.js
index e3a840c0600f..1b7ec83a43ec 100644
--- a/babel.config.js
+++ b/babel.config.js
@@ -3,10 +3,6 @@
 module.exports = {
   babelrcRoots: ['examples/*'],
   overrides: [
-    {
-      presets: ['@babel/preset-flow'],
-      test: '**/*.js',
-    },
     {
       plugins: [
         'babel-plugin-typescript-strip-namespaces',
diff --git a/e2e/__tests__/coverageReport.test.ts b/e2e/__tests__/coverageReport.test.ts
index f7dee0950d78..c825769aa33f 100644
--- a/e2e/__tests__/coverageReport.test.ts
+++ b/e2e/__tests__/coverageReport.test.ts
@@ -8,11 +8,15 @@
 import fs from 'fs';
 import path from 'path';
 import {wrap} from 'jest-snapshot-serializer-raw';
-import {extractSummary} from '../Utils';
+import {extractSummary, run} from '../Utils';
 import runJest from '../runJest';
 
 const DIR = path.resolve(__dirname, '../coverage-report');
 
+beforeAll(() => {
+  run('yarn', DIR);
+});
+
 test('outputs coverage report', () => {
   const {stdout, status} = runJest(DIR, ['--no-cache', '--coverage'], {
     stripAnsi: true,
diff --git a/e2e/__tests__/expectAsyncMatcher.test.ts b/e2e/__tests__/expectAsyncMatcher.test.ts
index 069314da4573..3e8d3a489bc4 100644
--- a/e2e/__tests__/expectAsyncMatcher.test.ts
+++ b/e2e/__tests__/expectAsyncMatcher.test.ts
@@ -8,9 +8,14 @@
 import path from 'path';
 import {wrap} from 'jest-snapshot-serializer-raw';
 import runJest from '../runJest';
-import {extractSummary} from '../Utils';
+import {extractSummary, run} from '../Utils';
+
 const dir = path.resolve(__dirname, '../expect-async-matcher');
 
+beforeAll(() => {
+  run('yarn', dir);
+});
+
 test('works with passing tests', () => {
   const result = runJest(dir, ['success.test.js']);
   expect(result.status).toBe(0);
diff --git a/e2e/__tests__/failures.test.ts b/e2e/__tests__/failures.test.ts
index ab266460509b..926bc7e15b55 100644
--- a/e2e/__tests__/failures.test.ts
+++ b/e2e/__tests__/failures.test.ts
@@ -7,7 +7,7 @@
 
 import path from 'path';
 import {wrap} from 'jest-snapshot-serializer-raw';
-import {extractSummary} from '../Utils';
+import {extractSummary, run} from '../Utils';
 import runJest from '../runJest';
 
 const dir = path.resolve(__dirname, '../failures');
@@ -21,6 +21,10 @@ function cleanStderr(stderr: string) {
     .replace(new RegExp('Failed: Object {', 'g'), 'thrown: Object {');
 }
 
+beforeAll(() => {
+  run('yarn', dir);
+});
+
 test('not throwing Error objects', () => {
   let stderr;
   stderr = runJest(dir, ['throwNumber.test.js']).stderr;
diff --git a/e2e/__tests__/globalSetup.test.ts b/e2e/__tests__/globalSetup.test.ts
index 021f6c4e5719..6340fbd9a788 100644
--- a/e2e/__tests__/globalSetup.test.ts
+++ b/e2e/__tests__/globalSetup.test.ts
@@ -10,7 +10,7 @@ import fs from 'fs';
 import os from 'os';
 import path from 'path';
 import runJest, {json as runWithJson} from '../runJest';
-import {cleanup} from '../Utils';
+import {cleanup, run} from '../Utils';
 
 const DIR = path.join(os.tmpdir(), 'jest-global-setup');
 const project1DIR = path.join(os.tmpdir(), 'jest-global-setup-project-1');
@@ -20,6 +20,11 @@ const customTransformDIR = path.join(
   'jest-global-setup-custom-transform',
 );
 const nodeModulesDIR = path.join(os.tmpdir(), 'jest-global-setup-node-modules');
+const e2eDir = path.resolve(__dirname, '../global-setup');
+
+beforeAll(() => {
+  run('yarn', e2eDir);
+});
 
 beforeEach(() => {
   cleanup(DIR);
@@ -37,8 +42,8 @@ afterAll(() => {
 });
 
 test('globalSetup is triggered once before all test suites', () => {
-  const setupPath = path.resolve(__dirname, '../global-setup/setup.js');
-  const result = runWithJson('global-setup', [
+  const setupPath = path.join(e2eDir, 'setup.js');
+  const result = runWithJson(e2eDir, [
     `--globalSetup=${setupPath}`,
     `--testPathPattern=__tests__`,
   ]);
@@ -52,7 +57,7 @@ test('globalSetup is triggered once before all test suites', () => {
 
 test('jest throws an error when globalSetup does not export a function', () => {
   const setupPath = path.resolve(__dirname, '../global-setup/invalidSetup.js');
-  const {status, stderr} = runJest('global-setup', [
+  const {status, stderr} = runJest(e2eDir, [
     `--globalSetup=${setupPath}`,
     `--testPathPattern=__tests__`,
   ]);
@@ -64,14 +69,11 @@ test('jest throws an error when globalSetup does not export a function', () => {
 });
 
 test('globalSetup function gets jest config object as a parameter', () => {
-  const setupPath = path.resolve(
-    __dirname,
-    '../global-setup/setupWithConfig.js',
-  );
+  const setupPath = path.resolve(e2eDir, 'setupWithConfig.js');
 
   const testPathPattern = 'pass';
 
-  const result = runJest('global-setup', [
+  const result = runJest(e2eDir, [
     `--globalSetup=${setupPath}`,
     `--testPathPattern=${testPathPattern}`,
   ]);
@@ -80,12 +82,9 @@ test('globalSetup function gets jest config object as a parameter', () => {
 });
 
 test('should call globalSetup function of multiple projects', () => {
-  const configPath = path.resolve(
-    __dirname,
-    '../global-setup/projects.jest.config.js',
-  );
+  const configPath = path.resolve(e2eDir, 'projects.jest.config.js');
 
-  const result = runWithJson('global-setup', [`--config=${configPath}`]);
+  const result = runWithJson(e2eDir, [`--config=${configPath}`]);
 
   expect(result.status).toBe(0);
 
@@ -95,12 +94,9 @@ test('should call globalSetup function of multiple projects', () => {
 });
 
 test('should not call a globalSetup of a project if there are no tests to run from this project', () => {
-  const configPath = path.resolve(
-    __dirname,
-    '../global-setup/projects.jest.config.js',
-  );
+  const configPath = path.resolve(e2eDir, 'projects.jest.config.js');
 
-  const result = runWithJson('global-setup', [
+  const result = runWithJson(e2eDir, [
     `--config=${configPath}`,
     '--testPathPattern=project-1',
   ]);
@@ -113,12 +109,9 @@ test('should not call a globalSetup of a project if there are no tests to run fr
 });
 
 test('should not call any globalSetup if there are no tests to run', () => {
-  const configPath = path.resolve(
-    __dirname,
-    '../global-setup/projects.jest.config.js',
-  );
+  const configPath = path.resolve(e2eDir, 'projects.jest.config.js');
 
-  const result = runWithJson('global-setup', [
+  const result = runWithJson(e2eDir, [
     `--config=${configPath}`,
     // onlyChanged ensures there are no tests to run
     '--onlyChanged',
@@ -132,14 +125,11 @@ test('should not call any globalSetup if there are no tests to run', () => {
 });
 
 test('globalSetup works with default export', () => {
-  const setupPath = path.resolve(
-    __dirname,
-    '../global-setup/setupWithDefaultExport.js',
-  );
+  const setupPath = path.resolve(e2eDir, 'setupWithDefaultExport.js');
 
   const testPathPattern = 'pass';
 
-  const result = runJest('global-setup', [
+  const result = runJest(e2eDir, [
     `--globalSetup=${setupPath}`,
     `--testPathPattern=${testPathPattern}`,
   ]);
@@ -148,12 +138,9 @@ test('globalSetup works with default export', () => {
 });
 
 test('globalSetup throws with named export', () => {
-  const setupPath = path.resolve(
-    __dirname,
-    '../global-setup/invalidSetupWithNamedExport.js',
-  );
+  const setupPath = path.resolve(e2eDir, 'invalidSetupWithNamedExport.js');
 
-  const {status, stderr} = runJest('global-setup', [
+  const {status, stderr} = runJest(e2eDir, [
     `--globalSetup=${setupPath}`,
     `--testPathPattern=__tests__`,
   ]);
diff --git a/e2e/__tests__/globalTeardown.test.ts b/e2e/__tests__/globalTeardown.test.ts
index 64690de23c86..8ecc361dfb65 100644
--- a/e2e/__tests__/globalTeardown.test.ts
+++ b/e2e/__tests__/globalTeardown.test.ts
@@ -11,11 +11,16 @@ import os from 'os';
 import path from 'path';
 import {createDirectory} from 'jest-util';
 import runJest, {json as runWithJson} from '../runJest';
-import {cleanup} from '../Utils';
+import {cleanup, run} from '../Utils';
 
 const DIR = path.join(os.tmpdir(), 'jest-global-teardown');
 const project1DIR = path.join(os.tmpdir(), 'jest-global-teardown-project-1');
 const project2DIR = path.join(os.tmpdir(), 'jest-global-teardown-project-2');
+const e2eDir = path.resolve(__dirname, '../global-teardown');
+
+beforeAll(() => {
+  run('yarn', e2eDir);
+});
 
 beforeEach(() => {
   cleanup(DIR);
@@ -30,10 +35,7 @@ afterAll(() => {
 
 test('globalTeardown is triggered once after all test suites', () => {
   createDirectory(DIR);
-  const teardownPath = path.resolve(
-    __dirname,
-    '../global-teardown/teardown.js',
-  );
+  const teardownPath = path.resolve(e2eDir, 'teardown.js');
   const result = runWithJson('global-teardown', [
     `--globalTeardown=${teardownPath}`,
     `--testPathPattern=__tests__`,
@@ -47,11 +49,8 @@ test('globalTeardown is triggered once after all test suites', () => {
 });
 
 test('jest throws an error when globalTeardown does not export a function', () => {
-  const teardownPath = path.resolve(
-    __dirname,
-    '../global-teardown/invalidTeardown.js',
-  );
-  const {status, stderr} = runJest('global-teardown', [
+  const teardownPath = path.resolve(e2eDir, 'invalidTeardown.js');
+  const {status, stderr} = runJest(e2eDir, [
     `--globalTeardown=${teardownPath}`,
     `--testPathPattern=__tests__`,
   ]);
@@ -63,14 +62,11 @@ test('jest throws an error when globalTeardown does not export a function', () =
 });
 
 test('globalTeardown function gets jest config object as a parameter', () => {
-  const teardownPath = path.resolve(
-    __dirname,
-    '../global-teardown/teardownWithConfig.js',
-  );
+  const teardownPath = path.resolve(e2eDir, 'teardownWithConfig.js');
 
   const testPathPattern = 'pass';
 
-  const result = runJest('global-teardown', [
+  const result = runJest(e2eDir, [
     `--globalTeardown=${teardownPath}`,
     `--testPathPattern=${testPathPattern}`,
   ]);
@@ -79,10 +75,7 @@ test('globalTeardown function gets jest config object as a parameter', () => {
 });
 
 test('should call globalTeardown function of multiple projects', () => {
-  const configPath = path.resolve(
-    __dirname,
-    '../global-teardown/projects.jest.config.js',
-  );
+  const configPath = path.resolve(e2eDir, 'projects.jest.config.js');
 
   const result = runWithJson('global-teardown', [`--config=${configPath}`]);
 
@@ -94,10 +87,7 @@ test('should call globalTeardown function of multiple projects', () => {
 });
 
 test('should not call a globalTeardown of a project if there are no tests to run from this project', () => {
-  const configPath = path.resolve(
-    __dirname,
-    '../global-teardown/projects.jest.config.js',
-  );
+  const configPath = path.resolve(e2eDir, 'projects.jest.config.js');
 
   const result = runWithJson('global-teardown', [
     `--config=${configPath}`,
@@ -112,14 +102,11 @@ test('should not call a globalTeardown of a project if there are no tests to run
 });
 
 test('globalTeardown works with default export', () => {
-  const teardownPath = path.resolve(
-    __dirname,
-    '../global-teardown/teardownWithDefaultExport.js',
-  );
+  const teardownPath = path.resolve(e2eDir, 'teardownWithDefaultExport.js');
 
   const testPathPattern = 'pass';
 
-  const result = runJest('global-teardown', [
+  const result = runJest(e2eDir, [
     `--globalTeardown=${teardownPath}`,
     `--testPathPattern=${testPathPattern}`,
   ]);
@@ -129,11 +116,11 @@ test('globalTeardown works with default export', () => {
 
 test('globalTeardown throws with named export', () => {
   const teardownPath = path.resolve(
-    __dirname,
-    '../global-teardown/invalidTeardownWithNamedExport.js',
+    e2eDir,
+    'invalidTeardownWithNamedExport.js',
   );
 
-  const {status, stderr} = runJest('global-teardown', [
+  const {status, stderr} = runJest(e2eDir, [
     `--globalTeardown=${teardownPath}`,
     `--testPathPattern=__tests__`,
   ]);
diff --git a/e2e/coverage-report/package.json b/e2e/coverage-report/package.json
index 4ced9148e930..604a68da7151 100644
--- a/e2e/coverage-report/package.json
+++ b/e2e/coverage-report/package.json
@@ -11,5 +11,8 @@
     "setupFiles": [
       "<rootDir>/setup.js"
     ]
+  },
+  "devDependencies": {
+    "@babel/preset-flow": "^7.0.0"
   }
 }
diff --git a/e2e/coverage-report/yarn.lock b/e2e/coverage-report/yarn.lock
new file mode 100644
index 000000000000..3a3ca6b43081
--- /dev/null
+++ b/e2e/coverage-report/yarn.lock
@@ -0,0 +1,31 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@babel/helper-plugin-utils@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.0.0.tgz#bbb3fbee98661c569034237cc03967ba99b4f250"
+  integrity sha512-CYAOUCARwExnEixLdB6sDm2dIJ/YgEAKDM1MOeMeZu9Ld/bDgVo8aiWrXwcY7OBh+1Ea2uUcVRcxKk0GJvW7QA==
+
+"@babel/plugin-syntax-flow@^7.2.0":
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-syntax-flow/-/plugin-syntax-flow-7.2.0.tgz#a765f061f803bc48f240c26f8747faf97c26bf7c"
+  integrity sha512-r6YMuZDWLtLlu0kqIim5o/3TNRAlWb073HwT3e2nKf9I8IIvOggPrnILYPsrrKilmn/mYEMCf/Z07w3yQJF6dg==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+
+"@babel/plugin-transform-flow-strip-types@^7.0.0":
+  version "7.4.4"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-flow-strip-types/-/plugin-transform-flow-strip-types-7.4.4.tgz#d267a081f49a8705fc9146de0768c6b58dccd8f7"
+  integrity sha512-WyVedfeEIILYEaWGAUWzVNyqG4sfsNooMhXWsu/YzOvVGcsnPb5PguysjJqI3t3qiaYj0BR8T2f5njdjTGe44Q==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+    "@babel/plugin-syntax-flow" "^7.2.0"
+
+"@babel/preset-flow@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/preset-flow/-/preset-flow-7.0.0.tgz#afd764835d9535ec63d8c7d4caf1c06457263da2"
+  integrity sha512-bJOHrYOPqJZCkPVbG1Lot2r5OSsB+iUOaxiHdlOeB1yPWS6evswVHwvkDLZ54WTaTRIk89ds0iHmGZSnxlPejQ==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+    "@babel/plugin-transform-flow-strip-types" "^7.0.0"
diff --git a/e2e/expect-async-matcher/babel.config.js b/e2e/expect-async-matcher/babel.config.js
index 7ec52588d4a4..bf18fc5ce74e 100644
--- a/e2e/expect-async-matcher/babel.config.js
+++ b/e2e/expect-async-matcher/babel.config.js
@@ -1,3 +1,7 @@
 // Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
 
-module.exports = require('../../babel.config');
+const baseConfig = require('../../babel.config');
+
+module.exports = Object.assign({}, baseConfig, {
+  presets: baseConfig.presets.concat('@babel/preset-flow'),
+});
diff --git a/e2e/expect-async-matcher/package.json b/e2e/expect-async-matcher/package.json
index 148788b25446..8c4fa847a6cc 100644
--- a/e2e/expect-async-matcher/package.json
+++ b/e2e/expect-async-matcher/package.json
@@ -1,5 +1,8 @@
 {
   "jest": {
     "testEnvironment": "node"
+  },
+  "devDependencies": {
+    "@babel/preset-flow": "^7.0.0"
   }
 }
diff --git a/e2e/expect-async-matcher/yarn.lock b/e2e/expect-async-matcher/yarn.lock
new file mode 100644
index 000000000000..3a3ca6b43081
--- /dev/null
+++ b/e2e/expect-async-matcher/yarn.lock
@@ -0,0 +1,31 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@babel/helper-plugin-utils@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.0.0.tgz#bbb3fbee98661c569034237cc03967ba99b4f250"
+  integrity sha512-CYAOUCARwExnEixLdB6sDm2dIJ/YgEAKDM1MOeMeZu9Ld/bDgVo8aiWrXwcY7OBh+1Ea2uUcVRcxKk0GJvW7QA==
+
+"@babel/plugin-syntax-flow@^7.2.0":
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-syntax-flow/-/plugin-syntax-flow-7.2.0.tgz#a765f061f803bc48f240c26f8747faf97c26bf7c"
+  integrity sha512-r6YMuZDWLtLlu0kqIim5o/3TNRAlWb073HwT3e2nKf9I8IIvOggPrnILYPsrrKilmn/mYEMCf/Z07w3yQJF6dg==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+
+"@babel/plugin-transform-flow-strip-types@^7.0.0":
+  version "7.4.4"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-flow-strip-types/-/plugin-transform-flow-strip-types-7.4.4.tgz#d267a081f49a8705fc9146de0768c6b58dccd8f7"
+  integrity sha512-WyVedfeEIILYEaWGAUWzVNyqG4sfsNooMhXWsu/YzOvVGcsnPb5PguysjJqI3t3qiaYj0BR8T2f5njdjTGe44Q==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+    "@babel/plugin-syntax-flow" "^7.2.0"
+
+"@babel/preset-flow@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/preset-flow/-/preset-flow-7.0.0.tgz#afd764835d9535ec63d8c7d4caf1c06457263da2"
+  integrity sha512-bJOHrYOPqJZCkPVbG1Lot2r5OSsB+iUOaxiHdlOeB1yPWS6evswVHwvkDLZ54WTaTRIk89ds0iHmGZSnxlPejQ==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+    "@babel/plugin-transform-flow-strip-types" "^7.0.0"
diff --git a/e2e/failures/babel.config.js b/e2e/failures/babel.config.js
index 7ec52588d4a4..bf18fc5ce74e 100644
--- a/e2e/failures/babel.config.js
+++ b/e2e/failures/babel.config.js
@@ -1,3 +1,7 @@
 // Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
 
-module.exports = require('../../babel.config');
+const baseConfig = require('../../babel.config');
+
+module.exports = Object.assign({}, baseConfig, {
+  presets: baseConfig.presets.concat('@babel/preset-flow'),
+});
diff --git a/e2e/failures/package.json b/e2e/failures/package.json
index 148788b25446..8c4fa847a6cc 100644
--- a/e2e/failures/package.json
+++ b/e2e/failures/package.json
@@ -1,5 +1,8 @@
 {
   "jest": {
     "testEnvironment": "node"
+  },
+  "devDependencies": {
+    "@babel/preset-flow": "^7.0.0"
   }
 }
diff --git a/e2e/failures/yarn.lock b/e2e/failures/yarn.lock
new file mode 100644
index 000000000000..3a3ca6b43081
--- /dev/null
+++ b/e2e/failures/yarn.lock
@@ -0,0 +1,31 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@babel/helper-plugin-utils@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.0.0.tgz#bbb3fbee98661c569034237cc03967ba99b4f250"
+  integrity sha512-CYAOUCARwExnEixLdB6sDm2dIJ/YgEAKDM1MOeMeZu9Ld/bDgVo8aiWrXwcY7OBh+1Ea2uUcVRcxKk0GJvW7QA==
+
+"@babel/plugin-syntax-flow@^7.2.0":
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-syntax-flow/-/plugin-syntax-flow-7.2.0.tgz#a765f061f803bc48f240c26f8747faf97c26bf7c"
+  integrity sha512-r6YMuZDWLtLlu0kqIim5o/3TNRAlWb073HwT3e2nKf9I8IIvOggPrnILYPsrrKilmn/mYEMCf/Z07w3yQJF6dg==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+
+"@babel/plugin-transform-flow-strip-types@^7.0.0":
+  version "7.4.4"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-flow-strip-types/-/plugin-transform-flow-strip-types-7.4.4.tgz#d267a081f49a8705fc9146de0768c6b58dccd8f7"
+  integrity sha512-WyVedfeEIILYEaWGAUWzVNyqG4sfsNooMhXWsu/YzOvVGcsnPb5PguysjJqI3t3qiaYj0BR8T2f5njdjTGe44Q==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+    "@babel/plugin-syntax-flow" "^7.2.0"
+
+"@babel/preset-flow@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/preset-flow/-/preset-flow-7.0.0.tgz#afd764835d9535ec63d8c7d4caf1c06457263da2"
+  integrity sha512-bJOHrYOPqJZCkPVbG1Lot2r5OSsB+iUOaxiHdlOeB1yPWS6evswVHwvkDLZ54WTaTRIk89ds0iHmGZSnxlPejQ==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+    "@babel/plugin-transform-flow-strip-types" "^7.0.0"
diff --git a/e2e/global-setup/package.json b/e2e/global-setup/package.json
index 3dc54e8651bf..ba6eb171d1a9 100644
--- a/e2e/global-setup/package.json
+++ b/e2e/global-setup/package.json
@@ -5,5 +5,8 @@
       "/node_modules/",
       "/packages/"
     ]
+  },
+  "devDependencies": {
+    "@babel/preset-flow": "^7.0.0"
   }
 }
diff --git a/e2e/global-setup/yarn.lock b/e2e/global-setup/yarn.lock
new file mode 100644
index 000000000000..3a3ca6b43081
--- /dev/null
+++ b/e2e/global-setup/yarn.lock
@@ -0,0 +1,31 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@babel/helper-plugin-utils@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.0.0.tgz#bbb3fbee98661c569034237cc03967ba99b4f250"
+  integrity sha512-CYAOUCARwExnEixLdB6sDm2dIJ/YgEAKDM1MOeMeZu9Ld/bDgVo8aiWrXwcY7OBh+1Ea2uUcVRcxKk0GJvW7QA==
+
+"@babel/plugin-syntax-flow@^7.2.0":
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-syntax-flow/-/plugin-syntax-flow-7.2.0.tgz#a765f061f803bc48f240c26f8747faf97c26bf7c"
+  integrity sha512-r6YMuZDWLtLlu0kqIim5o/3TNRAlWb073HwT3e2nKf9I8IIvOggPrnILYPsrrKilmn/mYEMCf/Z07w3yQJF6dg==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+
+"@babel/plugin-transform-flow-strip-types@^7.0.0":
+  version "7.4.4"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-flow-strip-types/-/plugin-transform-flow-strip-types-7.4.4.tgz#d267a081f49a8705fc9146de0768c6b58dccd8f7"
+  integrity sha512-WyVedfeEIILYEaWGAUWzVNyqG4sfsNooMhXWsu/YzOvVGcsnPb5PguysjJqI3t3qiaYj0BR8T2f5njdjTGe44Q==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+    "@babel/plugin-syntax-flow" "^7.2.0"
+
+"@babel/preset-flow@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/preset-flow/-/preset-flow-7.0.0.tgz#afd764835d9535ec63d8c7d4caf1c06457263da2"
+  integrity sha512-bJOHrYOPqJZCkPVbG1Lot2r5OSsB+iUOaxiHdlOeB1yPWS6evswVHwvkDLZ54WTaTRIk89ds0iHmGZSnxlPejQ==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+    "@babel/plugin-transform-flow-strip-types" "^7.0.0"
diff --git a/e2e/global-teardown/package.json b/e2e/global-teardown/package.json
index 3dc54e8651bf..ba6eb171d1a9 100644
--- a/e2e/global-teardown/package.json
+++ b/e2e/global-teardown/package.json
@@ -5,5 +5,8 @@
       "/node_modules/",
       "/packages/"
     ]
+  },
+  "devDependencies": {
+    "@babel/preset-flow": "^7.0.0"
   }
 }
diff --git a/e2e/global-teardown/yarn.lock b/e2e/global-teardown/yarn.lock
new file mode 100644
index 000000000000..3a3ca6b43081
--- /dev/null
+++ b/e2e/global-teardown/yarn.lock
@@ -0,0 +1,31 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+"@babel/helper-plugin-utils@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/helper-plugin-utils/-/helper-plugin-utils-7.0.0.tgz#bbb3fbee98661c569034237cc03967ba99b4f250"
+  integrity sha512-CYAOUCARwExnEixLdB6sDm2dIJ/YgEAKDM1MOeMeZu9Ld/bDgVo8aiWrXwcY7OBh+1Ea2uUcVRcxKk0GJvW7QA==
+
+"@babel/plugin-syntax-flow@^7.2.0":
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-syntax-flow/-/plugin-syntax-flow-7.2.0.tgz#a765f061f803bc48f240c26f8747faf97c26bf7c"
+  integrity sha512-r6YMuZDWLtLlu0kqIim5o/3TNRAlWb073HwT3e2nKf9I8IIvOggPrnILYPsrrKilmn/mYEMCf/Z07w3yQJF6dg==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+
+"@babel/plugin-transform-flow-strip-types@^7.0.0":
+  version "7.4.4"
+  resolved "https://registry.yarnpkg.com/@babel/plugin-transform-flow-strip-types/-/plugin-transform-flow-strip-types-7.4.4.tgz#d267a081f49a8705fc9146de0768c6b58dccd8f7"
+  integrity sha512-WyVedfeEIILYEaWGAUWzVNyqG4sfsNooMhXWsu/YzOvVGcsnPb5PguysjJqI3t3qiaYj0BR8T2f5njdjTGe44Q==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+    "@babel/plugin-syntax-flow" "^7.2.0"
+
+"@babel/preset-flow@^7.0.0":
+  version "7.0.0"
+  resolved "https://registry.yarnpkg.com/@babel/preset-flow/-/preset-flow-7.0.0.tgz#afd764835d9535ec63d8c7d4caf1c06457263da2"
+  integrity sha512-bJOHrYOPqJZCkPVbG1Lot2r5OSsB+iUOaxiHdlOeB1yPWS6evswVHwvkDLZ54WTaTRIk89ds0iHmGZSnxlPejQ==
+  dependencies:
+    "@babel/helper-plugin-utils" "^7.0.0"
+    "@babel/plugin-transform-flow-strip-types" "^7.0.0"
diff --git a/package.json b/package.json
index 097f17103657..0a01255e6978 100644
--- a/package.json
+++ b/package.json
@@ -6,7 +6,6 @@
     "@babel/plugin-transform-modules-commonjs": "^7.1.0",
     "@babel/plugin-transform-strict-mode": "^7.0.0",
     "@babel/preset-env": "^7.1.0",
-    "@babel/preset-flow": "^7.0.0",
     "@babel/preset-react": "^7.0.0",
     "@babel/preset-typescript": "^7.0.0",
     "@babel/register": "^7.0.0",
diff --git a/packages/expect/src/__tests__/__snapshots__/toThrowMatchers.test.js.snap b/packages/expect/src/__tests__/__snapshots__/toThrowMatchers.test.ts.snap
similarity index 100%
rename from packages/expect/src/__tests__/__snapshots__/toThrowMatchers.test.js.snap
rename to packages/expect/src/__tests__/__snapshots__/toThrowMatchers.test.ts.snap
diff --git a/packages/expect/src/__tests__/asymmetricMatchers.test.js b/packages/expect/src/__tests__/asymmetricMatchers.test.ts
similarity index 98%
rename from packages/expect/src/__tests__/asymmetricMatchers.test.js
rename to packages/expect/src/__tests__/asymmetricMatchers.test.ts
index f0166e38d04b..71fdbe66ded1 100644
--- a/packages/expect/src/__tests__/asymmetricMatchers.test.js
+++ b/packages/expect/src/__tests__/asymmetricMatchers.test.ts
@@ -6,10 +6,9 @@
  *
  */
 
-'use strict';
+import jestExpect from '../';
 
-const jestExpect = require('../');
-const {
+import {
   any,
   anything,
   arrayContaining,
@@ -17,13 +16,13 @@ const {
   objectContaining,
   objectNotContaining,
   stringContaining,
-  stringNotContaining,
   stringMatching,
+  stringNotContaining,
   stringNotMatching,
-} = require('../asymmetricMatchers');
+} from '../asymmetricMatchers';
 
 test('Any.asymmetricMatch()', () => {
-  const Thing = function() {};
+  class Thing {}
 
   [
     any(String).asymmetricMatch('jest'),
@@ -78,7 +77,7 @@ test('Any.toAsymmetricMatcher() with function name', () => {
         return $someFuncWithFakeToString;
       })(),
     ],
-  ].forEach(([name, fn]: [string, any]) => {
+  ].forEach(([name, fn]) => {
     jestExpect(any(fn).toAsymmetricMatcher()).toBe(`Any<${name}>`);
   });
 });
diff --git a/packages/expect/src/__tests__/toThrowMatchers.test.js b/packages/expect/src/__tests__/toThrowMatchers.test.ts
similarity index 91%
rename from packages/expect/src/__tests__/toThrowMatchers.test.js
rename to packages/expect/src/__tests__/toThrowMatchers.test.ts
index 3c723369aecf..5586d13657d9 100644
--- a/packages/expect/src/__tests__/toThrowMatchers.test.js
+++ b/packages/expect/src/__tests__/toThrowMatchers.test.ts
@@ -5,15 +5,12 @@
  * LICENSE file in the root directory of this source tree.
  */
 
-'use strict';
-
-const jestExpect = require('../');
+import jestExpect from '../';
 
 // Custom Error class because node versions have different stack trace strings.
-class customError extends Error {
-  constructor(message) {
-    super();
-    this.message = message;
+class CustomError extends Error {
+  constructor(message?: string) {
+    super(message);
     this.name = 'Error';
     this.stack =
       'Error\n' +
@@ -22,14 +19,17 @@ class customError extends Error {
   }
 }
 
-['toThrowError', 'toThrow'].forEach(toThrow => {
+// `as const` needs newer babel which explodes on node 6
+const matchers: ['toThrowError', 'toThrow'] = ['toThrowError', 'toThrow'];
+
+matchers.forEach(toThrow => {
   describe(toThrow, () => {
-    class Err extends customError {}
-    class Err2 extends customError {}
+    class Err extends CustomError {}
+    class Err2 extends CustomError {}
 
     test('to throw or not to throw', () => {
       jestExpect(() => {
-        throw new customError('apple');
+        throw new CustomError('apple');
       })[toThrow]();
       jestExpect(() => {}).not[toThrow]();
     });
@@ -37,10 +37,10 @@ class customError extends Error {
     describe('substring', () => {
       it('passes', () => {
         jestExpect(() => {
-          throw new customError('apple');
+          throw new CustomError('apple');
         })[toThrow]('apple');
         jestExpect(() => {
-          throw new customError('banana');
+          throw new CustomError('banana');
         }).not[toThrow]('apple');
         jestExpect(() => {}).not[toThrow]('apple');
       });
@@ -54,7 +54,7 @@ class customError extends Error {
       test('threw, but message did not match (error)', () => {
         expect(() => {
           jestExpect(() => {
-            throw new customError('apple');
+            throw new CustomError('apple');
           })[toThrow]('banana');
         }).toThrowErrorMatchingSnapshot();
       });
@@ -77,7 +77,7 @@ class customError extends Error {
       test('threw, but message should not match (error)', () => {
         expect(() => {
           jestExpect(() => {
-            throw new customError('Invalid array length');
+            throw new CustomError('Invalid array length');
           }).not[toThrow]('array');
         }).toThrowErrorMatchingSnapshot();
       });
@@ -95,10 +95,10 @@ class customError extends Error {
     describe('regexp', () => {
       it('passes', () => {
         jestExpect(() => {
-          throw new customError('apple');
+          throw new CustomError('apple');
         })[toThrow](/apple/);
         jestExpect(() => {
-          throw new customError('banana');
+          throw new CustomError('banana');
         }).not[toThrow](/apple/);
         jestExpect(() => {}).not[toThrow](/apple/);
       });
@@ -112,7 +112,7 @@ class customError extends Error {
       test('threw, but message did not match (error)', () => {
         expect(() => {
           jestExpect(() => {
-            throw new customError('apple');
+            throw new CustomError('apple');
           })[toThrow](/banana/);
         }).toThrowErrorMatchingSnapshot();
       });
@@ -129,7 +129,7 @@ class customError extends Error {
       test('threw, but message should not match (error)', () => {
         expect(() => {
           jestExpect(() => {
-            throw new customError('Invalid array length');
+            throw new CustomError('Invalid array length');
           }).not[toThrow](/ array /);
         }).toThrowErrorMatchingSnapshot();
       });
@@ -146,8 +146,8 @@ class customError extends Error {
 
     describe('error class', () => {
       class SubErr extends Err {
-        constructor(...args) {
-          super(...args);
+        constructor(message?: string) {
+          super(message);
           // In a carefully written error subclass,
           // name property is equal to constructor name.
           this.name = this.constructor.name;
@@ -155,8 +155,8 @@ class customError extends Error {
       }
 
       class SubSubErr extends SubErr {
-        constructor(...args) {
-          super(...args);
+        constructor(message?: string) {
+          super(message);
           // In a carefully written error subclass,
           // name property is equal to constructor name.
           this.name = this.constructor.name;
@@ -169,7 +169,7 @@ class customError extends Error {
         })[toThrow](Err);
         jestExpect(() => {
           throw new Err();
-        })[toThrow](customError);
+        })[toThrow](CustomError);
         jestExpect(() => {
           throw new Err();
         }).not[toThrow](Err2);
@@ -320,7 +320,7 @@ class customError extends Error {
         describe('pass', () => {
           test('isNot false', () => {
             jestExpect(() => {
-              throw new customError('apple');
+              throw new CustomError('apple');
             })[toThrow](expect.anything());
           });
 
@@ -346,7 +346,7 @@ class customError extends Error {
           test('isNot true', () => {
             expect(() =>
               jestExpect(() => {
-                throw new customError('apple');
+                throw new CustomError('apple');
               }).not[toThrow](expect.anything()),
             ).toThrowErrorMatchingSnapshot();
           });
@@ -357,7 +357,7 @@ class customError extends Error {
         // Test serialization of asymmetric matcher which has no property:
         // this.$$typeof = Symbol.for('jest.asymmetricMatcher')
         const matchError = {
-          asymmetricMatch(received) {
+          asymmetricMatch(received: Error | null | undefined) {
             return (
               received !== null &&
               received !== undefined &&
@@ -366,7 +366,7 @@ class customError extends Error {
           },
         };
         const matchNotError = {
-          asymmetricMatch(received) {
+          asymmetricMatch(received: Error | null | undefined) {
             return (
               received !== null &&
               received !== undefined &&
@@ -378,13 +378,13 @@ class customError extends Error {
         describe('pass', () => {
           test('isNot false', () => {
             jestExpect(() => {
-              throw new customError('apple');
+              throw new CustomError('apple');
             })[toThrow](matchError);
           });
 
           test('isNot true', () => {
             jestExpect(() => {
-              throw new customError('apple');
+              throw new CustomError('apple');
             }).not[toThrow](matchNotError);
           });
         });
@@ -393,7 +393,7 @@ class customError extends Error {
           test('isNot false', () => {
             expect(() =>
               jestExpect(() => {
-                throw new customError('apple');
+                throw new CustomError('apple');
               })[toThrow](matchNotError),
             ).toThrowErrorMatchingSnapshot();
           });
@@ -401,7 +401,7 @@ class customError extends Error {
           test('isNot true', () => {
             expect(() =>
               jestExpect(() => {
-                throw new customError('apple');
+                throw new CustomError('apple');
               }).not[toThrow](matchError),
             ).toThrowErrorMatchingSnapshot();
           });
@@ -419,13 +419,13 @@ class customError extends Error {
         describe('pass', () => {
           test('isNot false', () => {
             jestExpect(() => {
-              throw new customError('apple');
+              throw new CustomError('apple');
             })[toThrow](matchError);
           });
 
           test('isNot true', () => {
             jestExpect(() => {
-              throw new customError('apple');
+              throw new CustomError('apple');
             }).not[toThrow](matchNotError);
           });
         });
@@ -434,7 +434,7 @@ class customError extends Error {
           test('isNot false', () => {
             expect(() =>
               jestExpect(() => {
-                throw new customError('apple');
+                throw new CustomError('apple');
               })[toThrow](matchNotError),
             ).toThrowErrorMatchingSnapshot();
           });
@@ -442,7 +442,7 @@ class customError extends Error {
           test('isNot true', () => {
             expect(() =>
               jestExpect(() => {
-                throw new customError('apple');
+                throw new CustomError('apple');
               }).not[toThrow](matchError),
             ).toThrowErrorMatchingSnapshot();
           });
diff --git a/packages/jest-validate/src/__tests__/__snapshots__/validate.test.js.snap b/packages/jest-validate/src/__tests__/__snapshots__/validate.test.ts.snap
similarity index 98%
rename from packages/jest-validate/src/__tests__/__snapshots__/validate.test.js.snap
rename to packages/jest-validate/src/__tests__/__snapshots__/validate.test.ts.snap
index 5b92cbe4f751..5834cb065fdc 100644
--- a/packages/jest-validate/src/__tests__/__snapshots__/validate.test.js.snap
+++ b/packages/jest-validate/src/__tests__/__snapshots__/validate.test.ts.snap
@@ -94,7 +94,7 @@ exports[`pretty prints valid config for Function 1`] = `
 <red></>
 <red>  Example:</>
 <red>  {</>
-<red>    <bold>\\"fn\\"</>: <bold>(config, option, deprecatedOptions) => true</></>
+<red>    <bold>\\"fn\\"</>: <bold>(_config, _option, _deprecatedOptions) => true</></>
 <red>  }</>
 <red></>"
 `;
diff --git a/packages/jest-validate/src/__tests__/fixtures/jestConfig.js b/packages/jest-validate/src/__tests__/fixtures/jestConfig.ts
similarity index 95%
rename from packages/jest-validate/src/__tests__/fixtures/jestConfig.js
rename to packages/jest-validate/src/__tests__/fixtures/jestConfig.ts
index 607ad3f53c84..bd84bca1bf35 100644
--- a/packages/jest-validate/src/__tests__/fixtures/jestConfig.js
+++ b/packages/jest-validate/src/__tests__/fixtures/jestConfig.ts
@@ -3,13 +3,12 @@
  *
  * This source code is licensed under the MIT license found in the
  * LICENSE file in the root directory of this source tree.
- *
- * @flow
  */
 
-const os = require('os');
-const path = require('path');
-const chalk = require('chalk');
+import os from 'os';
+import path from 'path';
+import chalk from 'chalk';
+
 const NODE_MODULES = path.sep + 'node_modules' + path.sep;
 const replacePathSepForRegex = (string: string) => {
   if (path.sep === '\\') {
@@ -134,7 +133,7 @@ const validConfig = {
 const format = (value: string) => require('pretty-format')(value, {min: true});
 
 const deprecatedConfig = {
-  preprocessorIgnorePatterns: (config: Object) =>
+  preprocessorIgnorePatterns: (config: Record<string, any>) =>
     `  Option ${chalk.bold(
       'preprocessorIgnorePatterns',
     )} was replaced by ${chalk.bold(
@@ -150,7 +149,7 @@ const deprecatedConfig = {
 
   Please update your configuration.`,
 
-  scriptPreprocessor: (config: Object) =>
+  scriptPreprocessor: (config: Record<string, any>) =>
     `  Option ${chalk.bold('scriptPreprocessor')} was replaced by ${chalk.bold(
       'transform',
     )}, which support multiple preprocessors.
diff --git a/packages/jest-validate/src/__tests__/validate.test.js b/packages/jest-validate/src/__tests__/validate.test.ts
similarity index 97%
rename from packages/jest-validate/src/__tests__/validate.test.js
rename to packages/jest-validate/src/__tests__/validate.test.ts
index 936ab1ae9b7f..fa83731159c6 100644
--- a/packages/jest-validate/src/__tests__/validate.test.js
+++ b/packages/jest-validate/src/__tests__/validate.test.ts
@@ -6,8 +6,6 @@
  *
  */
 
-'use strict';
-
 import validate from '../validate';
 import {multipleValidOptions} from '../condition';
 import jestValidateExampleConfig from '../exampleConfig';
@@ -56,7 +54,7 @@ test.each([
 
 test(`pretty prints valid config for Function`, () => {
   const config = {fn: 'test'};
-  const validConfig = {fn: (config, option, deprecatedOptions) => true};
+  const validConfig = {fn: (_config, _option, _deprecatedOptions) => true};
   expect(() =>
     validate(config, {
       exampleConfig: validConfig,
@@ -294,7 +292,7 @@ test('Comments in config JSON using "//" key are not warned', () => {
 
   validate(config, {
     exampleConfig: validConfig,
-    recursiveBlacklist: [('myCustomKey': "don't validate this")],
+    recursiveBlacklist: ['myCustomKey' as "don't validate this"],
   });
   expect(console.warn).not.toBeCalled();
 
diff --git a/yarn.lock b/yarn.lock
index 300fe7317a4c..cc59dfb88153 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -793,14 +793,6 @@
     js-levenshtein "^1.1.3"
     semver "^5.3.0"
 
-"@babel/preset-flow@^7.0.0":
-  version "7.0.0"
-  resolved "https://registry.yarnpkg.com/@babel/preset-flow/-/preset-flow-7.0.0.tgz#afd764835d9535ec63d8c7d4caf1c06457263da2"
-  integrity sha512-bJOHrYOPqJZCkPVbG1Lot2r5OSsB+iUOaxiHdlOeB1yPWS6evswVHwvkDLZ54WTaTRIk89ds0iHmGZSnxlPejQ==
-  dependencies:
-    "@babel/helper-plugin-utils" "^7.0.0"
-    "@babel/plugin-transform-flow-strip-types" "^7.0.0"
-
 "@babel/preset-react@*", "@babel/preset-react@^7.0.0":
   version "7.0.0"
   resolved "https://registry.yarnpkg.com/@babel/preset-react/-/preset-react-7.0.0.tgz#e86b4b3d99433c7b3e9e91747e2653958bc6b3c0"