Port "Fixed crash in hasVisibleDeclarations related to binding elements" (#1820)

Author: Andarist

internal/checker/emitresolver.go

@@ -409,7 +409,14 @@ func (r *emitResolver) hasVisibleDeclarations(symbol *ast.Symbol, shouldComputeA
 					continue
 				}
 				if symbol.Flags&ast.SymbolFlagsBlockScopedVariable != 0 {
-					variableStatement := ast.FindAncestor(declaration, ast.IsVariableStatement)
+					rootDeclaration := ast.WalkUpBindingElementsAndPatterns(declaration)
+					if ast.IsParameter(rootDeclaration) {
+						return nil
+					}
+					variableStatement := rootDeclaration.Parent.Parent
+					if !ast.IsVariableStatement(variableStatement) {
+						return nil
+					}
 					if ast.HasSyntacticModifier(variableStatement, ast.ModifierFlagsExport) {
 						continue // no alias to add, already exported
 					}