/**
 * Shell output compression pipeline for batch bash tool.
 *
 * Classifies commands by output policy, applies specific compressors for
 * known tools (git, npm, cargo), and falls back through a tiered cleanup
 * chain. Compression runs BEFORE truncation; truncation remains the safety net.
 */
export declare enum OutputPolicy {
    Passthrough = 0,
    Verbatim = 1,
    Compressible = 2
}
export declare function classify(command: string): OutputPolicy;
export interface CompressionResult {
    stdout: string;
    stderr: string;
    savingsPct: number;
}
export declare function compressOutput(command: string, stdout: string, stderr: string): CompressionResult;
export declare function estimateTokens(text: string): number;
export declare function stripAnsi(text: string): string;
export declare function terseFilter(output: string): string;
export declare function lightweightCleanup(output: string): string;
export declare function truncateWithSafetyScan(lines: string[]): string | null;
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