Function copyDirIntoTestRunnerApp

tools/cli/commands.js:1838–1856

(allowSymlink, ...parts)

    // Copy the existing build and isopacks to speed up the initial start
    function copyDirIntoTestRunnerApp(allowSymlink, ...parts) {
      // Depending on whether the user has run `meteor run` or other commands, they
      // may or may not exist yet
      const appDirPath = files.pathJoin(options.appDir, ...parts);
      const testDirPath = files.pathJoin(testRunnerAppDir, ...parts);

      files.mkdir_p(appDirPath);
      files.mkdir_p(files.pathDirname(testDirPath));

      if (allowSymlink) {
        // Windows can create junction links without administrator
        // privileges since both paths refer to directories.
        files.symlink(appDirPath, testDirPath, "junction");
      } else {
        files.cp_r(appDirPath, testDirPath, {
          preserveSymlinks: true
        });
      }
    }

    copyDirIntoTestRunnerApp(false, '.meteor', 'local', 'build');
    copyDirIntoTestRunnerApp(true, '.meteor', 'local', 'bundler-cache');