utils: add tryExtensions and async tryCatch

[tunnckoCore]

Repeated in couple of Jest Runners.

the tryExtensions

function tryExtensions(filepath, config) {
  const { extensions } = getWorkspacesAndExtensions(config.cwd);
  const hasExtension = path.extname(filepath).length > 0;

  if (hasExtension) {
    return filepath;
  }

  const extension = extensions.find((ext) => fs.existsSync(filepath + ext));
  if (!extension) {
    throw new Error(`Cannot find input file: ${filepath}`);
  }

  return filepath + extension;
}

the tryCatch (notice that it doesn't have hasError now) and better signature.

function isObject(val) {
  return val && typeof val === 'object' && !Array.isArray(val);
}
async function tryCatch(fn, onError) {
  try {
    return await fn();
  } catch (err) {
    if (typeof onError === 'function') {
      return {
        error: onError(err),
      };
    }

    if (isObject(onError)) {
      return {
        error: fail({
          start: onError.start,
          end: new Date(),
          test: {
            path: onError.testPath,
            title: 'Rollup',
            errorMessage: `jest-runner-rollup: ${err.stack || err.message}`,
          },
        }),
      };
    }

    const now = new Date();
    return {
      error: fail({
        start: now,
        end: now,
        test: {
          path: '___rollup-runner-failing.js',
          title: 'Rollup',
          errorMessage: `jest-runner-rollup: ${err.stack || err.message}`,
        },
      }),
    };
  }
}