BUGFIX: Use jest-worker with install-types to fix ENOMEM (#311)

* fix(install-types): use for to fix ENOMEM

* Revert "fix(install-types): use for to fix ENOMEM"

This reverts commit d4efe67.

* improvement(install-types): use jest-worker

* fix(commands): fix testing and lint error

package.json

@@ -50,6 +50,7 @@
     "find-up": "4.1.0",
     "glob": "7.1.6",
     "inquirer": "7.0.3",
+    "jest-worker": "^24.9.0",
     "lodash.merge": "4.6.2",
     "micromatch": "4.0.2",
     "ora": "4.0.3",

src/commands/install-types.js

@@ -1,12 +1,14 @@
 // @flow
 
-const exec = require('./../lib/exec.js');
+const {default: Workder} = require('jest-worker');
+
 const path = require('./../lib/paths.js');
 const dependency = require('./../lib/dependency.js');
 const flowTyped = require('./../lib/flowTyped.js');
 const {info, success, error} = require('./../lib/logger.js');
 
 async function installFlowTypes() {
+  const exec = new Workder(require.resolve('./../lib/exec.js'));
   const [rootPath, packagePaths] = await Promise.all([
     path.resolveMonoRepoRootPath(),
     path.resolveMonoRepoPackagePaths()
@@ -41,6 +43,7 @@ async function installFlowTypes() {
   );
 
   success('Installed "flow-typed" definitions');
+  exec.end();
 }
 
 module.exports = installFlowTypes;

src/commands/install-types.spec.js

@@ -1,12 +1,16 @@
 // @flow
 
+jest.mock('jest-worker');
+
 jest.mock('./../lib/paths.js');
 jest.mock('./../lib/logger.js');
 jest.mock('./../lib/dependency.js');
 jest.mock('./../lib/flowTyped.js');
 jest.mock('./../lib/exec.js');
 console.error = jest.fn();
 
+const {default: Worker} = require('jest-worker');
+
 const path: any = require('./../lib/paths.js');
 const dependency: any = require('./../lib/dependency.js');
 const flowTyped: any = require('./../lib/flowTyped.js');
@@ -16,6 +20,13 @@ const exec: any = require('./../lib/exec.js');
 const installFlowTypes = require('./install-types.js');
 
 describe('install-types', () => {
+  beforeAll(() => {
+    Worker.mockImplementation(() => ({
+      asyncWithRetries: exec.asyncWithRetries,
+      end: () => {}
+    }));
+  });
+
   afterEach(() => {
     // $FlowFixMe: Ignore errors since the jest type-def is out of date.
     jest.restoreAllMocks();