Method _bailIfNeeded

packages/jest-core/src/TestScheduler.ts:452–483

(
    testContexts: Set<TestContext>,
    aggregatedResults: AggregatedResult,
    watcher: TestWatcher,
    allTests: Array<Test>,
  )

  }

  private async _bailIfNeeded(
    testContexts: Set<TestContext>,
    aggregatedResults: AggregatedResult,
    watcher: TestWatcher,
    allTests: Array<Test>,
  ): Promise<void> {
    if (
      this._globalConfig.bail !== 0 &&
      aggregatedResults.numFailedTests >= this._globalConfig.bail
    ) {
      if (watcher.isWatchMode()) {
        await watcher.setState({interrupted: true});
        return;
      }

      try {
        await this._dispatcher.onRunComplete(testContexts, aggregatedResults);
      } finally {
        // Perform global teardown if client configures `bail`
        if (allTests.length > 0) {
          performance.mark('jest/globalTeardown:start');
          await runGlobalHook({
            allTests,
            globalConfig: this._globalConfig,
            moduleName: 'globalTeardown',
          });
          performance.mark('jest/globalTeardown:end');
          exit(this._globalConfig.testFailureExitCode);
        }
      }
    }
  }
}

const createAggregatedResults = (numTotalTestSuites: number) => {