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retrofit try-catch-finally as block-scoped (#4178)

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- support optional catch binding
This commit is contained in:
Alex Lam S.L
2020-10-04 22:30:14 +01:00
committed by GitHub
parent f9946767c9
commit 8f0521d51d
8 changed files with 74 additions and 19 deletions
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10
lib/scope.js
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@@ -114,6 +114,14 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options) {
});
return true;
}
if (node instanceof AST_Try) {
walk_scope(function() {
walk_body(node, tw);
});
if (node.bcatch) node.bcatch.walk(tw);
if (node.bfinally) node.bfinally.walk(tw);
return true;
}
if (node instanceof AST_BlockScope) {
walk_scope(descend);
return true;
@@ -468,7 +476,7 @@ AST_Toplevel.DEFMETHOD("mangle_names", function(options) {
node.mangled_name = name;
return true;
}
if (!options.ie8 && node instanceof AST_Catch) {
if (!options.ie8 && node instanceof AST_Catch && node.argname) {
var def = node.argname.definition();
var redef = defer_redef(def, node.argname);
descend();