vant/packages/vant-cli/src/commands/jest.ts

import { runCLI } from 'jest';
import { setNodeEnv } from '../common';
import { genPackageEntry } from '../compiler/gen-package-entry';
import { ROOT, JEST_CONFIG_FILE, PACKAGE_ENTRY_FILE } from '../common/constant';

export function test(command: any) {
  setNodeEnv('test');

  genPackageEntry({
    outputPath: PACKAGE_ENTRY_FILE,
  });

  const config = {
    rootDir: ROOT,
    watch: command.watch,
    config: JEST_CONFIG_FILE,
    clearCache: command.clearCache,
    changedSince: command.changedSince,
    logHeapUsage: command.logHeapUsage,
    runInBand: command.runInBand,
    debug: command.debug,
  } as any;

  runCLI(config, [ROOT])
    .then(response => {
      if (!response.results.success && !command.watch) {
        process.exit(1);
      }
    })
    .catch(err => {
      console.log(err);

      if (!command.watch) {
        process.exit(1);
      }
    });
}