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improve fix for #3976 (#3980)

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This commit is contained in:
Alex Lam S.L
2020-06-09 17:00:57 +01:00
committed by GitHub
parent ed7c82fa5e
commit 1d15f51238
2 changed files with 9 additions and 11 deletions
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16
lib/compress.js
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@@ -1466,12 +1466,13 @@ merge(Compressor.prototype, {
function is_last_node(node, parent) {
if (node.TYPE == "Binary") return node.operator == "in" && !is_object(node.right.tail_node());
if (node instanceof AST_Call) {
var fn = node.expression;
var def, fn = node.expression;
if (fn instanceof AST_SymbolRef) {
if (recursive_ref(compressor, fn.definition())) return true;
def = fn.definition();
fn = fn.fixed_value();
}
if (!(fn instanceof AST_Lambda)) return true;
if (def && recursive_ref(compressor, def)) return true;
if (fn.collapse_scanning) return false;
fn.collapse_scanning = true;
var replace = can_replace;
@@ -7572,13 +7573,10 @@ merge(Compressor.prototype, {
});
function recursive_ref(compressor, def) {
var node;
for (var i = 0; node = compressor.parent(i); i++) {
if (node instanceof AST_Lambda) {
var name = node.name;
if (name && name.definition() === def) break;
}
}
var level = 0, node = compressor.self();
do {
if (node instanceof AST_Lambda && node.name && node.name.definition() === def) break;
} while (node = compressor.parent(level++));
return node;
}