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fix corner cases in inline & unused (#5058)

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fixes #5057
This commit is contained in:
Alex Lam S.L
2021-07-07 03:29:16 +01:00
committed by GitHub
parent 1fefe3f1d1
commit 0c48b84540
2 changed files with 83 additions and 6 deletions
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12
lib/compress.js
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@@ -3643,7 +3643,7 @@ merge(Compressor.prototype, {
stat.init = stat.init.definitions[0].name.convert_symbol(AST_SymbolRef, function(ref, name) {
defns.push(make_node(AST_VarDef, name, {
name: name,
value: null
value: null,
}));
name.definition().references.push(ref);
});
@@ -7007,6 +7007,7 @@ merge(Compressor.prototype, {
var value = node.value.drop_side_effect_free(compressor);
if (!value) return null;
log(node.name, "Side effects in default value of unused variable {name}");
node.name.__unused = null;
node.value = value;
}
return node;
@@ -9646,7 +9647,6 @@ merge(Compressor.prototype, {
fn.each_argname(function(arg) {
if (abort) return;
if (arg.__unused) return;
if (arg instanceof AST_DefaultValue) arg = arg.name;
if (!safe_to_inject || var_exists(defined, arg.name)) return abort = true;
used[arg.name] = true;
if (in_loop) in_loop.push(arg.definition());
@@ -9720,22 +9720,22 @@ merge(Compressor.prototype, {
function append_var(decls, expressions, name, value) {
var def = name.definition();
scope.variables.set(name.name, def);
scope.enclosed.push(def);
if (!scope.var_names()[name.name]) {
scope.var_names()[name.name] = true;
decls.push(make_node(AST_VarDef, name, {
name: name,
value: null
value: null,
}));
}
scope.variables.set(name.name, def);
scope.enclosed.push(def);
if (!value) return;
var sym = make_node(AST_SymbolRef, name, name);
def.references.push(sym);
expressions.push(make_node(AST_Assign, self, {
operator: "=",
left: sym,
right: value
right: value,
}));
}