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Exit concat early if no arguments are provided.

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John-David Dalton
2016-08-27 10:43:51 -07:00
parent e96442631c
commit 60023a23df
1 changed files with 6 additions and 5 deletions
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11
lodash.js
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@@ -6588,17 +6588,18 @@
* // => [1] * // => [1]
*/ */
function concat() { function concat() {
var length = arguments.length, var length = arguments.length;
args = Array(length ? length - 1 : 0), if (!length) {
return [];
}
var args = Array(length - 1),
array = arguments[0], array = arguments[0],
index = length; index = length;
while (index--) { while (index--) {
args[index - 1] = arguments[index]; args[index - 1] = arguments[index];
} }
return length return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));
? arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1))
: [];
} }
/** /**