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better slicedToArray helper

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This commit is contained in:
Sebastian McKenzie 2015-02-13 20:38:28 +11:00
parent ba9b85f64b
commit c6ce1a248c
1 changed files with 4 additions and 4 deletions
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8
lib/6to5/transformation/templates/sliced-to-array.js
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@ -1,14 +1,14 @@
(function (arr, i) { (function (arr, i) {
if (!arr || !arr[Symbol.iterator]) { if (Array.isArray(arr)) {
throw new TypeError("Invalid attempt to destructure non-iterable instance");
} else if (Array.isArray(arr)) {
return arr; return arr;
} else { } else if (Symbol.iterator in arr) {
var _arr = []; var _arr = [];
for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) { for (var _iterator = arr[Symbol.iterator](), _step; !(_step = _iterator.next()).done;) {
_arr.push(_step.value); _arr.push(_step.value);
if (i && _arr.length === i) break; if (i && _arr.length === i) break;
} }
return _arr; return _arr;
} else {
throw new TypeError("Invalid attempt to destructure non-iterable instance");
} }
}); });