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'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = iterator;
var _isArrayLike = require('lodash/isArrayLike');
var _isArrayLike2 = _interopRequireDefault(_isArrayLike);
var _getIterator = require('./getIterator');
var _getIterator2 = _interopRequireDefault(_getIterator);
var _keys = require('lodash/keys');
var _keys2 = _interopRequireDefault(_keys);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function createArrayIterator(coll) {
var i = -1;
var len = coll.length;
return function next() {
return ++i < len ? { value: coll[i], key: i } : null;
};
}
function createES2015Iterator(iterator) {
var i = -1;
return function next() {
var item = iterator.next();
if (item.done) return null;
i++;
return { value: item.value, key: i };
};
}
function createObjectIterator(obj) {
var okeys = (0, _keys2.default)(obj);
var i = -1;
var len = okeys.length;
return function next() {
var key = okeys[++i];
return i < len ? { value: obj[key], key: key } : null;
};
}
function iterator(coll) {
if ((0, _isArrayLike2.default)(coll)) {
return createArrayIterator(coll);
}
var iterator = (0, _getIterator2.default)(coll);
return iterator ? createES2015Iterator(iterator) : createObjectIterator(coll);
}
module.exports = exports['default'];
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