syntax_data: {"ast_node_type":"variable","tokens":[{"end":80,"kind":"keyword","start":0,"text":"let"}]}
source_snippet:             let contents = fs::read_to_string(path).map_err(|e| e.to_string())?;
context_before:         fn load_file(path: &Path) -> Result<(Target, TargetWarnings), String> {
context_after:             Target::from_json(&contents)