moltres-utils/dist/crypto/hashStream.js

Utils for Moltres apps

"use strict";

require("core-js/modules/es6.object.define-property");

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.default = void 0;

require("core-js/modules/es6.regexp.to-string");

require("core-js/modules/es6.date.to-string");

require("core-js/modules/es6.promise");

require("regenerator-runtime/runtime");

var _cryptoJs = _interopRequireDefault(require("crypto-js"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }

function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }

// https://github.com/jakubzapletal/crypto-js/blob/master/README.md#progressive-hashing
var hashStream =
/*#__PURE__*/
function () {
  var _ref = _asyncToGenerator(
  /*#__PURE__*/
  regeneratorRuntime.mark(function _callee(stream) {
    var algorithm,
        _args = arguments;
    return regeneratorRuntime.wrap(function _callee$(_context) {
      while (1) {
        switch (_context.prev = _context.next) {
          case 0:
            algorithm = _args.length > 1 && _args[1] !== undefined ? _args[1] : 'SHA256';
            return _context.abrupt("return", new Promise(function (resolve, reject) {
              var shasum = _cryptoJs.default.algo[algorithm].create();

              try {
                stream.on('data', function (data) {
                  shasum = shasum.update(data.toString());
                });
                stream.on('end', function () {
                  var hash = shasum.finalize();
                  return resolve(hash.toString());
                });
              } catch (error) {
                return reject(error);
              }
            }));

          case 2:
          case "end":
            return _context.stop();
        }
      }
    }, _callee, this);
  }));

  return function hashStream(_x) {
    return _ref.apply(this, arguments);
  };
}();

var _default = hashStream;
exports.default = _default;
//# sourceMappingURL=hashStream.js.map