iter-tools/impls/$take/async-take.js

The iterable toolbox

var _regeneratorRuntime = require("@babel/runtime/regenerator");

var _awaitAsyncGenerator = require("@babel/runtime/helpers/awaitAsyncGenerator");

var _wrapAsyncGenerator = require("@babel/runtime/helpers/wrapAsyncGenerator");

var _asyncIterator = require("@babel/runtime/helpers/asyncIterator");

var _require = require('../../internal/async-iterable.js'),
    asyncIterableCurry = _require.asyncIterableCurry;

function __asyncTake(_x, _x2) {
  return _asyncTake.apply(this, arguments);
}

exports.__asyncTake = __asyncTake;

function _asyncTake() {
  _asyncTake = _wrapAsyncGenerator( /*#__PURE__*/_regeneratorRuntime.mark(function _callee(iterable, n) {
    var i, _iteratorNormalCompletion, _didIteratorError, _iteratorError, _iterator, _step, _value, value;

    return _regeneratorRuntime.wrap(function _callee$(_context) {
      while (1) {
        switch (_context.prev = _context.next) {
          case 0:
            if (!(n === 0)) {
              _context.next = 2;
              break;
            }

            return _context.abrupt("return");

          case 2:
            i = 0;
            _iteratorNormalCompletion = true;
            _didIteratorError = false;
            _context.prev = 5;
            _iterator = _asyncIterator(iterable);

          case 7:
            _context.next = 9;
            return _awaitAsyncGenerator(_iterator.next());

          case 9:
            _step = _context.sent;
            _iteratorNormalCompletion = _step.done;
            _context.next = 13;
            return _awaitAsyncGenerator(_step.value);

          case 13:
            _value = _context.sent;

            if (_iteratorNormalCompletion) {
              _context.next = 23;
              break;
            }

            value = _value;
            _context.next = 18;
            return value;

          case 18:
            if (!(++i === n)) {
              _context.next = 20;
              break;
            }

            return _context.abrupt("break", 23);

          case 20:
            _iteratorNormalCompletion = true;
            _context.next = 7;
            break;

          case 23:
            _context.next = 29;
            break;

          case 25:
            _context.prev = 25;
            _context.t0 = _context["catch"](5);
            _didIteratorError = true;
            _iteratorError = _context.t0;

          case 29:
            _context.prev = 29;
            _context.prev = 30;

            if (!(!_iteratorNormalCompletion && _iterator["return"] != null)) {
              _context.next = 34;
              break;
            }

            _context.next = 34;
            return _awaitAsyncGenerator(_iterator["return"]());

          case 34:
            _context.prev = 34;

            if (!_didIteratorError) {
              _context.next = 37;
              break;
            }

            throw _iteratorError;

          case 37:
            return _context.finish(34);

          case 38:
            return _context.finish(29);

          case 39:
          case "end":
            return _context.stop();
        }
      }
    }, _callee, null, [[5, 25, 29, 39], [30,, 34, 38]]);
  }));
  return _asyncTake.apply(this, arguments);
}

var asyncTake = /*#__PURE__*/asyncIterableCurry(__asyncTake);
exports.asyncTake = asyncTake;