57 lines
1.4 KiB
JavaScript
57 lines
1.4 KiB
JavaScript
|
'use strict';
|
||
|
|
|
||
|
|
Object.defineProperty(exports, "__esModule", {
|
||
|
|
value: true
|
||
|
|
});
|
||
|
|
exports.default = createIterator;
|
||
|
|
|
||
|
|
var _isArrayLike = require('./isArrayLike.js');
|
||
|
|
|
||
|
|
var _isArrayLike2 = _interopRequireDefault(_isArrayLike);
|
||
|
|
|
||
|
|
var _getIterator = require('./getIterator.js');
|
||
|
|
|
||
|
|
var _getIterator2 = _interopRequireDefault(_getIterator);
|
||
|
|
|
||
|
|
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 = obj ? Object.keys(obj) : [];
|
||
|
|
var i = -1;
|
||
|
|
var len = okeys.length;
|
||
|
|
return function next() {
|
||
|
|
var key = okeys[++i];
|
||
|
|
if (key === '__proto__') {
|
||
|
|
return next();
|
||
|
|
}
|
||
|
|
return i < len ? { value: obj[key], key } : null;
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
function createIterator(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'];
|