syntax_data: {"ast_node_type":"variable","tokens":[{"end":30,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:     let hash_len = hash.len();
context_before:     let hash = v0::encode_integer_62(hash);
context_after:     let _ = write!(output, "{hash_len}H{}", &hash[..hash_len - 1]);