RDY: feat(jest-cli): add forceExitAfterTestRun avg (Duplicated of PR #…

…1847) (#1870)

* feat(jest-cli): add forceExit avg on cli

After run all tests that force exit when forceExit is true

#1456

* Fix typecheck & linter offences

* Improve null check expression

* Update index.js

packages/jest-cli/src/cli/args.js

@@ -261,6 +261,14 @@ const options = {
       'Will run all tests affected by file changes in the last commit made.',
     type: 'boolean',
   },
+  forceExit: {
+    default: false,
+    description:
+      'Force Jest to exit after all tests have completed running. ' +
+      'This is useful when resources set up by test code cannot be ' +
+      'adequately cleaned up.',
+    type: 'boolean',
+  },
 };
 
 module.exports = {

packages/jest-cli/src/cli/index.js

@@ -39,7 +39,11 @@ function run(argv?: Object, root?: Path) {
   }
 
   getJest(root).runCLI(argv, root, result => {
-    process.on('exit', () => process.exit(!result || result.success ? 0 : 1));
+    const code = !result || result.success ? 0 : 1;
+    process.on('exit', () => process.exit(code));
+    if (argv && argv.forceExit) {
+      process.exit(code);
+    }
   });
 }
 

types/Config.js

@@ -78,4 +78,5 @@ export type Config = DefaultConfig & {|
   updateSnapshot: boolean,
   usesBabelJest: boolean,
   watchman: boolean,
+  forceExit: boolean,
 |};