{"ast_node_type":"variable","tokens":[{"end":47,"kind":"keyword","start":0,"text":"let"}]}
    let cursor_pos = text.find(CURSOR_MARKER)?;
fn try_extract_offset(text: &str) -> Option<(TextSize, String)> {
    let mut new_text = String::with_capacity(text.len() - CURSOR_MARKER.len());