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fix corner case in hoist_props (#5069)

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This commit is contained in:
Alex Lam S.L
2021-07-11 03:59:57 +01:00
committed by GitHub
parent d147d5d7f0
commit 08391b8e1c
3 changed files with 55 additions and 24 deletions
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20
lib/compress.js
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@@ -347,7 +347,7 @@ merge(Compressor.prototype, {
});
function read_property(obj, node) {
var key = node.getProperty();
var key = node.get_property();
if (key instanceof AST_Node) return;
var value;
if (obj instanceof AST_Array) {
@@ -7597,12 +7597,11 @@ merge(Compressor.prototype, {
}
}));
self.transform(new TreeTransformer(function(node, descend) {
if (node instanceof AST_Binary) return replace("right");
if (node instanceof AST_PropAccess) {
if (!(node.expression instanceof AST_SymbolRef)) return;
var defs = defs_by_id[node.expression.definition().id];
if (!defs) return;
var def = defs.get(node.getProperty());
var def = defs.get(node.get_property());
var sym = make_node(AST_SymbolRef, node, {
name: def.name,
scope: node.expression.scope,
@@ -7611,18 +7610,9 @@ merge(Compressor.prototype, {
sym.reference();
return sym;
}
if (node instanceof AST_Unary) {
if (unary_side_effects[node.operator]) return;
return replace("expression");
}
function replace(prop) {
var sym = node[prop];
if (!(sym instanceof AST_SymbolRef)) return;
if (!(sym.definition().id in defs_by_id)) return;
var opt = node.clone();
opt[prop] = make_node(AST_Object, sym, { properties: [] });
return opt;
if (node instanceof AST_SymbolRef) {
if (!(node.definition().id in defs_by_id)) return;
return make_node(AST_Object, node, { properties: [] });
}
}));