fallow-engine 3.1.0

Typed analysis engine facade for fallow consumers
Documentation 
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use std::process::ExitCode;

use fallow_types::output_format::OutputFormat;

/// Emit an error as structured JSON on stdout when `--format json` is active,
/// then return the given exit code. For non-JSON formats, emit to stderr as usual.
#[expect(
    clippy::print_stdout,
    clippy::print_stderr,
    reason = "legacy health helpers still emit CLI-shaped errors internally"
)]
pub fn emit_error(message: &str, exit_code: u8, output: OutputFormat) -> ExitCode {
    if matches!(output, OutputFormat::Json) {
        let error_obj = serde_json::json!({
            "error": true,
            "message": message,
            "exit_code": exit_code,
        });
        if let Ok(json) = serde_json::to_string_pretty(&error_obj) {
            println!("{json}");
        }
    } else {
        eprintln!("Error: {message}");
    }
    ExitCode::from(exit_code)
}