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fix corner case in evaluate (#5357)

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fixes #5356
This commit is contained in:
Alex Lam S.L
2022-02-16 00:28:49 +08:00
committed by GitHub
parent 0b50880b4f
commit 82e8ebd77d
3 changed files with 45 additions and 2 deletions
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10
lib/compress.js
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@@ -4404,9 +4404,15 @@ Compressor.prototype.compress = function(node) {
def(AST_Sequence, function(compressor) {
return this.tail_node().is_number(compressor);
});
def(AST_SymbolRef, function(compressor) {
def(AST_SymbolRef, function(compressor, keep_unary) {
var fixed = this.fixed_value();
if (!fixed) return false;
if (keep_unary
&& fixed instanceof AST_UnaryPrefix
&& fixed.operator == "+"
&& fixed.expression.equivalent_to(this)) {
return false;
}
this.is_number = return_false;
var result = fixed.is_number(compressor);
delete this.is_number;
@@ -10772,7 +10778,7 @@ Compressor.prototype.compress = function(node) {
}
switch (op) {
case "+":
if (compressor.option("evaluate") && exp.is_number(compressor)) return exp;
if (compressor.option("evaluate") && exp.is_number(compressor, true)) return exp;
break;
case "-":
if (exp instanceof AST_Infinity) exp = exp.transform(compressor);