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fix corner case in inline (#4160)

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fixes #4159
This commit is contained in:
Alex Lam S.L
2020-09-29 00:01:38 +01:00
committed by GitHub
parent 9e07ac4102
commit 1d835ac17d
2 changed files with 33 additions and 6 deletions
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18
lib/compress.js
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@@ -4793,15 +4793,15 @@ merge(Compressor.prototype, {
for (var a = node.argnames, i = a.length; --i >= 0;) {
var sym = a[i];
var def = sym.definition();
if (!(def.id in in_use_ids)) {
if (def.id in in_use_ids) {
trim = false;
if (indexOf_assign(def, sym) < 0) sym.__unused = null;
} else {
sym.__unused = true;
if (trim) {
log(sym, "Dropping unused function argument {name}");
a.pop();
}
} else {
trim = false;
if (indexOf_assign(def, sym) < 0) sym.__unused = null;
}
}
fns_with_marked_args.push(node);
@@ -7047,9 +7047,10 @@ merge(Compressor.prototype, {
value: null
}));
}
if (!value) return;
var sym = make_node(AST_SymbolRef, name, name);
def.references.push(sym);
if (value) expressions.push(make_node(AST_Assign, self, {
expressions.push(make_node(AST_Assign, self, {
operator: "=",
left: sym,
right: value
@@ -7070,7 +7071,12 @@ merge(Compressor.prototype, {
var symbol = make_node(AST_SymbolVar, name, name);
name.definition().orig.push(symbol);
if (!value && in_loop) value = make_node(AST_Undefined, self);
append_var(decls, expressions, symbol, value);
if ("__unused" in name) {
append_var(decls, expressions, symbol);
if (value) expressions.push(value);
} else {
append_var(decls, expressions, symbol, value);
}
}
}
decls.reverse();