syntax_data: {"ast_node_type":"variable","tokens":[{"end":60,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:     let inputtext = "aaaaa\nbbbbBB\nCCC\nDDDDDddddd\neee\n";
context_before:     let sm = SourceMap::new(FilePathMapping::empty());
context_after:     let selection = "     \n    ~~\n~~~\n~~~~~     \n   \n";