Function runCLI

packages/jest-core/src/cli/index.ts:38–141

(
  argv: Config.Argv,
  projects: Array<string>,
)

type OnCompleteCallback = (results: AggregatedResult) => void | undefined;

export async function runCLI(
  argv: Config.Argv,
  projects: Array<string>,
): Promise<{
  results: AggregatedResult;
  globalConfig: Config.GlobalConfig;
}> {
  performance.mark('jest/runCLI:start');
  let results: AggregatedResult | undefined;

  // If we output a JSON object, we can't write anything to stdout, since
  // it'll break the JSON structure and it won't be valid.
  const outputStream =
    argv.json || argv.useStderr ? process.stderr : process.stdout;

  const {globalConfig, configs, hasDeprecationWarnings} = await readConfigs(
    argv,
    projects,
  );

  if (argv.debug) {
    logDebugMessages(globalConfig, configs, outputStream);
  }

  if (argv.showConfig) {
    logDebugMessages(globalConfig, configs, process.stdout);
    exit(0);
  }

  if (argv.clearCache) {
    // stick in a Set to dedupe the deletions
    const uniqueConfigDirectories = new Set(
      configs.map(config => config.cacheDirectory),
    );
    for (const cacheDirectory of uniqueConfigDirectories) {
      fs.rmSync(cacheDirectory, {force: true, recursive: true});
      process.stdout.write(`Cleared ${cacheDirectory}\n`);
    }

    exit(0);
  }

  const configsOfProjectsToRun = getConfigsOfProjectsToRun(configs, {
    ignoreProjects: argv.ignoreProjects,
    selectProjects: argv.selectProjects,
  });
  if (argv.selectProjects || argv.ignoreProjects) {
    const namesMissingWarning = getProjectNamesMissingWarning(configs, {
      ignoreProjects: argv.ignoreProjects,
      selectProjects: argv.selectProjects,
    });
    if (namesMissingWarning) {
      outputStream.write(namesMissingWarning);
    }
    outputStream.write(
      getSelectProjectsMessage(configsOfProjectsToRun, {
        ignoreProjects: argv.ignoreProjects,
        selectProjects: argv.selectProjects,