/**
 * Port of the forgecode truncation helpers.
 *
 * These run inside `tool.execute.after` to trim the output that opencode would
 * otherwise pipe straight back into the model context. The goal is parity with
 * forgecode's defaults, not byte-perfect equivalence.
 *
 *   - shell / bash  → head+tail line clipping with per-line clipping
 *   - search / grep → cap total lines
 *   - fetch         → cap total characters
 */
declare const DEFAULTS: {
    shell: {
        prefixLines: number;
        suffixLines: number;
        maxLineLength: number;
    };
    search: {
        maxLines: number;
        maxLineLength: number;
    };
    fetch: {
        maxChars: number;
    };
};
export declare function truncateShell(content: string, opts?: Partial<typeof DEFAULTS.shell>): string;
export declare function truncateSearch(content: string, opts?: Partial<typeof DEFAULTS.search>): string;
export declare function truncateFetch(content: string, opts?: Partial<typeof DEFAULTS.fetch>): string;
/**
 * Routes based on the tool name. Unknown tools are returned unchanged.
 */
export declare function truncateForTool(tool: string, content: string): string;
export {};
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