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

fix corner case in evaluate (#4645)

Browse Source 
fixes #4644
This commit is contained in:
Alex Lam S.L
2021-02-11 19:26:12 +00:00
committed by GitHub
parent 952765be66
commit 83197ffdb3
2 changed files with 66 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

29
lib/compress.js
View File

@@ -4368,6 +4368,7 @@ merge(Compressor.prototype, {
}
return !(sym instanceof AST_Destructured);
})) return this;
if (fn.rest instanceof AST_Destructured) return this;
if (!args && !ignore_side_effects) return this;
var stat = fn.first_statement();
if (!(stat instanceof AST_Return)) {
@@ -4394,18 +4395,8 @@ merge(Compressor.prototype, {
if (!val) return;
var cached_args = [];
if (!args || all(fn.argnames, function(sym, i) {
if (sym instanceof AST_DefaultValue) sym = sym.name;
var def = sym.definition();
if (def.orig[def.orig.length - 1] !== sym) return false;
var value = args[i];
def.references.forEach(function(node) {
node._eval = function() {
return value;
};
cached_args.push(node);
});
return true;
}) || ignore_side_effects) {
return assign(sym, args[i]);
}) && !(fn.rest && !assign(fn.rest, args.slice(fn.argnames.length))) || ignore_side_effects) {
fn.evaluating = true;
val = val._eval(compressor, ignore_side_effects, cached, depth);
delete fn.evaluating;
@@ -4450,6 +4441,20 @@ merge(Compressor.prototype, {
}
}
return this;
function assign(sym, arg) {
if (sym instanceof AST_DefaultValue) sym = sym.name;
var def = sym.definition();
if (def.orig[def.orig.length - 1] !== sym) return false;
var value = arg;
def.references.forEach(function(node) {
node._eval = function() {
return value;
};
cached_args.push(node);
});
return true;
}
});
def(AST_New, return_this);
def(AST_Template, function(compressor, ignore_side_effects, cached, depth) {