/**
 * compression:set — update a specific compression config value in the project config.
 *
 * Usage:
 *   babysitter compression:set <layer.key> <value> [--json]
 *
 * Examples:
 *   babysitter compression:set userPromptHook.threshold 300
 *   babysitter compression:set userPromptHook.keepRatio 0.85
 *   babysitter compression:set sdkContextHook.targetReduction 0.2
 *   babysitter compression:set sdkContextHook.minCompressionTokens 100
 *   babysitter compression:set commandOutputHook.excludeCommands node,python,ruby
 *   babysitter compression:set processLibraryCache.targetReduction 0.3
 *   babysitter compression:set processLibraryCache.ttlHours 48
 *   babysitter compression:set enabled false
 *
 * Writes the change to .a5c/compression.config.json in the current project.
 */
export interface CompressionSetOptions {
    key: string;
    value: string;
    json?: boolean;
    cwd?: string;
}
export declare function handleCompressionSet(opts: CompressionSetOptions): Promise<number>;
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