export interface JsonPosition {
    line: number;
    column: number;
}
export interface JsonRange {
    start: JsonPosition;
    end: JsonPosition;
}
export interface JsonDiagnostic {
    code: string;
    message: string;
    offset: number;
    length: number;
    location: JsonRange;
    excerpt: string;
}
export interface JsonParseResult<T> {
    value?: T;
    diagnostics: JsonDiagnostic[];
    /** True when JSON.parse accepted the original document without extensions. */
    valid: boolean;
    /** True when the parser could reconstruct the document without discarding values. */
    recovered: boolean;
    /** True when an explicit fixer may rewrite the document as canonical JSON. */
    repairable: boolean;
}
/**
 * Parses strict JSON first, then performs a fault-tolerant structural parse for
 * diagnostics and safe recovery. The returned value is intentionally withheld
 * for unsafe syntax so callers do not analyse a partially reconstructed object.
 */
export declare function parseJsonDocument<T>(input: string): JsonParseResult<T>;
/** Returns canonical strict JSON only for documents proven safe to reconstruct. */
export declare function repairJsonDocument(input: string): string | undefined;
export declare function formatJsonDiagnostic(diagnostic: JsonDiagnostic): string;