Fix recursive process.exit calls (#5445)

Author: mjesun

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

@@ -114,7 +114,7 @@ const readResultsAndExit = (
 ) => {
   const code = !result || result.success ? 0 : globalConfig.testFailureExitCode;
 
-  process.on('exit', () => exit(code));
+  process.on('exit', () => (process.exitCode = code));
 
   if (globalConfig.forceExit) {
     exit(code);

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

@@ -11,7 +11,6 @@ import type {Argv} from 'types/Argv';
 import type {EnvironmentClass} from 'types/Environment';
 
 import chalk from 'chalk';
-import exit from 'exit';
 import os from 'os';
 import path from 'path';
 import yargs from 'yargs';
@@ -43,7 +42,7 @@ export function run(cliArgv?: Argv, cliInfo?: Array<string>) {
 
   if (argv.help) {
     yargs.showHelp();
-    process.on('exit', () => exit(1));
+    process.on('exit', () => (process.exitCode = 1));
     return;
   }
 
@@ -54,7 +53,7 @@ export function run(cliArgv?: Argv, cliInfo?: Array<string>) {
 
   if (!argv._.length) {
     console.log('Please provide a path to a script. (See --help for details)');
-    process.on('exit', () => exit(1));
+    process.on('exit', () => (process.exitCode = 1));
     return;
   }
 
@@ -93,6 +92,6 @@ export function run(cliArgv?: Argv, cliInfo?: Array<string>) {
     })
     .catch(e => {
       console.error(chalk.red(e.stack || e));
-      process.on('exit', () => exit(1));
+      process.on('exit', () => (process.exitCode = 1));
     });
 }