export default ({
  config,
  globalConfig,
  localRequire,
  testPath,
}: SetupOptions) => {
  // Jest tests snapshotSerializers in order preceding built-in serializers.
  // Therefore, add in reverse because the last added is the first tested.
  config.snapshotSerializers
    .concat()
    .reverse()
    .forEach(path => {
      addSerializer(localRequire(path));
    });

  patchJasmine();
  const {expand, updateSnapshot} = globalConfig;
  const snapshotResolver = buildSnapshotResolver(config);
  const snapshotPath = snapshotResolver.resolveSnapshotPath(testPath);
  const snapshotState = new SnapshotState(snapshotPath, {
    expand,
    getBabelTraverse: () => require('@babel/traverse').default,
    getPrettier: () =>
      config.prettierPath ? require(config.prettierPath) : null,
    updateSnapshot,
  });
  setState({snapshotState, testPath});
  // Return it back to the outer scope (test runner outside the VM).
  return snapshotState;
};

 (runtimeContext: any) => {
   dependencyResolver = new DependencyResolver(
     runtimeContext.resolver,
     runtimeContext.hasteFS,
     buildSnapshotResolver(config),
   );
 },

  findRelatedTests(
    allPaths: Set<Config.Path>,
    collectCoverage: boolean,
  ): SearchResult {
    const dependencyResolver = new DependencyResolver(
      this._context.resolver,
      this._context.hasteFS,
      buildSnapshotResolver(this._context.config),
    );

    if (!collectCoverage) {
      return {
        tests: toTests(
          this._context,
          dependencyResolver.resolveInverse(
            allPaths,
            this.isTestFilePath.bind(this),
            {skipNodeResolution: this._context.config.skipNodeResolution},
          ),
        ),
      };
    }

    const testModulesMap = dependencyResolver.resolveInverseModuleMap(
      allPaths,
      this.isTestFilePath.bind(this),
      {skipNodeResolution: this._context.config.skipNodeResolution},
    );

    const allPathsAbsolute = Array.from(allPaths).map(p => path.resolve(p));

    const collectCoverageFrom = new Set();

    testModulesMap.forEach(testModule => {
      if (!testModule.dependencies) {
        return;
      }

      testModule.dependencies
        .filter(p => allPathsAbsolute.includes(p))
        .map(filename => {
          filename = replaceRootDirInPath(
            this._context.config.rootDir,
            filename,
          );
          return path.isAbsolute(filename)
            ? path.relative(this._context.config.rootDir, filename)
            : filename;
        })
        .forEach(filename => collectCoverageFrom.add(filename));
    });

    return {
      collectCoverageFrom,
      tests: toTests(
        this._context,
        testModulesMap.map(testModule => testModule.file),
      ),
    };
  }

      contexts.forEach(context => {
        const status = snapshot.cleanup(
          context.hasteFS,
          this._globalConfig.updateSnapshot,
          snapshot.buildSnapshotResolver(context.config),
        );

        aggregatedResults.snapshot.filesRemoved += status.filesRemoved;
      });

export const initialize = ({
  config,
  environment,
  getPrettier,
  getBabelTraverse,
  globalConfig,
  localRequire,
  parentProcess,
  testPath,
}: {
  config: Config.ProjectConfig;
  environment: JestEnvironment;
  getPrettier: () => null | any;
  getBabelTraverse: () => Function;
  globalConfig: Config.GlobalConfig;
  localRequire: (path: Config.Path) => any;
  testPath: Config.Path;
  parentProcess: Process;
}) => {
  const mutex = throat(globalConfig.maxConcurrency);

  Object.assign(global, globals);

  global.xit = global.it.skip;
  global.xtest = global.it.skip;
  global.xdescribe = global.describe.skip;
  global.fit = global.it.only;
  global.fdescribe = global.describe.only;

  global.test.concurrent = (test => {
    const concurrent = (
      testName: string,
      testFn: () => Promise<any>,
      timeout?: number,
    ) => {
      // For concurrent tests we first run the function that returns promise, and then register a
      // nomral test that will be waiting on the returned promise (when we start the test, the promise
      // will already be in the process of execution).
      // Unfortunately at this stage there's no way to know if there are any `.only` tests in the suite
      // that will result in this test to be skipped, so we'll be executing the promise function anyway,
      // even if it ends up being skipped.
      const promise = mutex(() => testFn());
      global.test(testName, () => promise, timeout);
    };

    concurrent.only = (
      testName: string,
      testFn: () => Promise<any>,
      timeout?: number,
    ) => {
      const promise = mutex(() => testFn());
      // eslint-disable-next-line jest/no-focused-tests
      test.only(testName, () => promise, timeout);
    };

    concurrent.skip = test.skip;

    return concurrent;
  })(global.test);

  addEventHandler(eventHandler);

  if (environment.handleTestEvent) {
    addEventHandler(environment.handleTestEvent.bind(environment));
  }

  dispatch({
    name: 'setup',
    parentProcess,
    testNamePattern: globalConfig.testNamePattern,
  });

  if (config.testLocationInResults) {
    dispatch({
      name: 'include_test_location_in_result',
    });
  }

  // Jest tests snapshotSerializers in order preceding built-in serializers.
  // Therefore, add in reverse because the last added is the first tested.
  config.snapshotSerializers
    .concat()
    .reverse()
    .forEach(path => {
      addSerializer(localRequire(path));
    });

  const {expand, updateSnapshot} = globalConfig;
  const snapshotResolver = buildSnapshotResolver(config);
  const snapshotPath = snapshotResolver.resolveSnapshotPath(testPath);
  const snapshotState = new SnapshotState(snapshotPath, {
    expand,
    getBabelTraverse,
    getPrettier,
    updateSnapshot,
  });
  setState({snapshotState, testPath});

  // Return it back to the outer scope (test runner outside the VM).
  return {globals, snapshotState};
//.........这里部分代码省略.........