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fix corner case in functions (#4234)

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fixes #4233
This commit is contained in:
Alex Lam S.L
2020-10-22 03:13:11 +01:00
committed by GitHub
parent fd8c0212b8
commit 23ca7d675f
2 changed files with 42 additions and 1 deletions
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4
lib/compress.js
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@@ -4774,7 +4774,9 @@ merge(Compressor.prototype, {
node.definitions.forEach(function(defn) {
var def = defn.name.definition();
var_defs_by_id.add(def.id, defn);
if ((!drop_vars || (node instanceof AST_Const ? def.redefined() : def.const_redefs))
var redef = def.redefined();
if (redef && node instanceof AST_Var) var_defs_by_id.add(redef.id, defn);
if ((!drop_vars || (node instanceof AST_Const ? redef : def.const_redefs))
&& !(def.id in in_use_ids)) {
in_use_ids[def.id] = true;
in_use.push(def);