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No unneeded empty arrays in transform spread (#6763)

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* No unneeded empty arrays in transform spread

Since Array.prototype.concat creates a new array from inputs, there's
no need to call it from a new empty array ([].concat()).

* [fixup] simplify detection of new array
This commit is contained in:
Anatoli Papirovski
2017-11-09 14:51:56 -05:00
committed by Henry Zhu
parent 617d35245f
commit aefbb1380e
7 changed files with 10 additions and 10 deletions
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2
packages/babel-plugin-transform-spread/test/fixtures/spread/arguments-array/expected.js vendored
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@@ -1,5 +1,5 @@
function foo() {
return bar([].concat(Array.prototype.slice.call(arguments)));
return bar(Array.prototype.slice.call(arguments));
}
function bar(one, two, three) {