@onesy/utils/esm/promisify.js

Utils

import is from './is';
const optionsDefault = {
  onError: 'reject'
};

const promisify = function (method) {
  let options_ = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
  return async function () {
    const options = { ...optionsDefault,
      ...options_
    };
    if (is('promise', method)) return method;
    let resolve;
    let reject;
    const promise = new Promise((resolve_, reject_) => {
      resolve = resolve_;
      reject = reject_;
    });

    const resolveMethod = function () {
      for (var _len2 = arguments.length, args_ = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
        args_[_key2] = arguments[_key2];
      }

      const error = args_.find(item => is('error', item));
      const response = args_.length <= 1 ? args_[0] : args_;
      if (error && options.onError === 'reject') return reject(error);
      return resolve(response);
    };

    if (is('function', method)) {
      try {
        for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
          args[_key] = arguments[_key];
        }

        await method(...args, resolveMethod);
      } catch (error) {
        return reject(error);
      }
    } else resolve();

    return promise;
  };
};

export default promisify;