syntax_data: {"ast_node_type":"other","tokens":[{"end":92,"kind":"keyword","start":0,"text":"if"}]}
source_snippet:             if !prev_source.is_empty() && (accept_newlines || !prev_source.contains('\n')) {
context_before:             let prev_source = prev_source.rsplit(c).next().unwrap_or("");
context_after:                 return sp.with_lo(BytePos(sp.lo().0 - prev_source.len() as u32));