JoBoEVD/UglifyJS
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

fix corner cases in join_vars (#5852)

Browse Source 
fixes #5849
fixes #5850
This commit is contained in:
Alex Lam S.L
2024-06-17 09:11:11 +03:00
committed by GitHub
parent f31311e439
commit 23d74bedeb
3 changed files with 57 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
lib/compress.js
View File

@@ -4300,18 +4300,18 @@ Compressor.prototype.compress = function(node) {
if (prop instanceof AST_Node) return;
if (!RE_POSITIVE_INTEGER.test("" + prop)) return;
prop = +prop;
var len = value.elements.length;
var elements = value.elements;
var len = elements.length;
if (prop > len + 4) return;
for (var i = Math.min(len, prop + 1); --i >= 0;) {
if (elements[i] instanceof AST_Spread) return;
}
if (prop < len) {
var element = value.elements[prop];
if (element instanceof AST_Hole) {
value.elements[prop] = node.right;
} else {
value.elements[prop] = make_sequence(node, [ element, node.right ]).optimize(compressor);
}
var element = elements[prop].drop_side_effect_free(compressor);
elements[prop] = element ? make_sequence(node, [ element, node.right ]) : node.right;
} else {
while (prop > len) value.elements[len++] = make_node(AST_Hole, value);
value.elements[prop] = node.right;
while (prop > len) elements[len++] = make_node(AST_Hole, value);
elements[prop] = node.right;
}
return true;
}