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enhance unused (#4968)

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This commit is contained in:
Alex Lam S.L
2021-05-26 15:25:07 +01:00
committed by GitHub
parent e3798d9a76
commit 362abe0ffb
2 changed files with 4 additions and 22 deletions
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19
lib/compress.js
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@@ -6890,25 +6890,10 @@ merge(Compressor.prototype, {
node.value = node.value.transform(tt);
var name = node.name.transform(trimmer);
if (!name) {
if (node.name instanceof AST_Destructured) return null;
var value = node.value.drop_side_effect_free(compressor);
if (!value) return null;
name = node.name;
if (name instanceof AST_Destructured) {
name = name.clone();
name[name instanceof AST_DestructuredArray ? "elements" : "properties"] = [];
if (!(value instanceof AST_Array || value.is_string(compressor)
|| name instanceof AST_DestructuredObject
&& (value instanceof AST_Object
|| value.is_boolean(compressor)
|| value.is_number(compressor)))) {
value = make_node(AST_Array, value, {
elements: [ value ],
});
}
node.name = name;
} else {
log(name, "Side effects in default value of unused variable {name}");
}
log(node.name, "Side effects in default value of unused variable {name}");
node.value = value;
}
return node;