Correctly transform spreads to use proper concat method (#9108)

* Correctly transform spreads to use proper concat method * Add tests to ensure array spread clones elements
2018-12-13 23:24:43 -08:00
parent 72471aff63
commit 47da5cf75a
9 changed files with 62 additions and 5 deletions
--- a/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/array-unpack-optimisation/output.js
+++ b/packages/babel-plugin-transform-destructuring/test/fixtures/destructuring/array-unpack-optimisation/output.js
@@ -21,7 +21,7 @@ var _ref4 = [a[1], a[0]];
 a[0] = _ref4[0];
 a[1] = _ref4[1];

-var _ref5 = babelHelpers.toConsumableArray(foo).concat([bar]),
+var _ref5 = [].concat(babelHelpers.toConsumableArray(foo), [bar]),
    a = _ref5[0],
    b = _ref5[1];