@jilib/ji/dist/ji/utils.js

Ji Language — Symbols as Functions

"use strict";

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

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); }); }; }

// Array folding
// https://dev.to/mebble/learn-to-fold-your-js-arrays-2o8p
var fold = function fold(reducer, init, xs) {
  var acc = init;
  var _iteratorNormalCompletion = true;
  var _didIteratorError = false;
  var _iteratorError = undefined;

  try {
    for (var _iterator = xs[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
      var x = _step.value;
      acc = reducer(acc, x);
    }
  } catch (err) {
    _didIteratorError = true;
    _iteratorError = err;
  } finally {
    try {
      if (!_iteratorNormalCompletion && _iterator["return"] != null) {
        _iterator["return"]();
      }
    } finally {
      if (_didIteratorError) {
        throw _iteratorError;
      }
    }
  }

  return acc;
}; // Like the normal `fold` function but with added async/await functionality to play nice with Observable's environment


exports.fold = fold;

var waitfold =
/*#__PURE__*/
function () {
  var _ref = _asyncToGenerator(
  /*#__PURE__*/
  regeneratorRuntime.mark(function _callee(reducer, init, xs) {
    var acc, _iteratorNormalCompletion2, _didIteratorError2, _iteratorError2, _iterator2, _step2, x;

    return regeneratorRuntime.wrap(function _callee$(_context) {
      while (1) {
        switch (_context.prev = _context.next) {
          case 0:
            acc = init;
            _iteratorNormalCompletion2 = true;
            _didIteratorError2 = false;
            _iteratorError2 = undefined;
            _context.prev = 4;
            _iterator2 = xs[Symbol.iterator]();

          case 6:
            if (_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done) {
              _context.next = 14;
              break;
            }

            x = _step2.value;
            _context.next = 10;
            return reducer(acc, x);

          case 10:
            acc = _context.sent;

          case 11:
            _iteratorNormalCompletion2 = true;
            _context.next = 6;
            break;

          case 14:
            _context.next = 20;
            break;

          case 16:
            _context.prev = 16;
            _context.t0 = _context["catch"](4);
            _didIteratorError2 = true;
            _iteratorError2 = _context.t0;

          case 20:
            _context.prev = 20;
            _context.prev = 21;

            if (!_iteratorNormalCompletion2 && _iterator2["return"] != null) {
              _iterator2["return"]();
            }

          case 23:
            _context.prev = 23;

            if (!_didIteratorError2) {
              _context.next = 26;
              break;
            }

            throw _iteratorError2;

          case 26:
            return _context.finish(23);

          case 27:
            return _context.finish(20);

          case 28:
            return _context.abrupt("return", acc);

          case 29:
          case "end":
            return _context.stop();
        }
      }
    }, _callee, null, [[4, 16, 20, 28], [21,, 23, 27]]);
  }));

  return function waitfold(_x, _x2, _x3) {
    return _ref.apply(this, arguments);
  };
}();

exports.waitfold = waitfold;