We can treesitter to improve the parsing error messages:

• SyntaxNode.hasError() API to show if parts of a script fail to parse (see 0.13.2 missing parsing errors tree-sitter/tree-sitter-bash#27 (comment))
• error recovery to show more specific errors if a specific node is missing (see 0.13.2 missing parsing errors tree-sitter/tree-sitter-bash#27 (comment))