/** Rendered detail for one diagnostic. `found:false` carries the not-found
 *  message with a suggestion; the caller prints it and exits 1. */
export declare function renderDiagnosticText(codeOrName: string): {
    text: string;
    found: boolean;
};
/** Every code, grouped under its category title, with the message template
 *  as the one-line summary. Codes sort within a category. */
export declare function renderDiagnosticList(): string;