import type { Message, ToolSchema } from '@deepseek-ai/dsh-llm';
interface CompactionPlanningMessage {
    readonly role: string;
    readonly content: readonly {
        readonly type: string;
        readonly id?: string;
    }[];
    readonly toolCallId?: string;
}
export declare function compactionSafeBoundaries(messages: readonly CompactionPlanningMessage[]): readonly number[];
/**
 * Conservative content-byte planning, not provider-exact token accounting.
 * Native admission still checks converted replay, images and the full request.
 */
export declare function estimateCompactionInputBytes(input: {
    readonly messages: readonly Message[];
    readonly tools?: readonly ToolSchema[];
}): number;
export declare function reduceCompactionInputLimit(input: {
    readonly messages: readonly Message[];
    readonly tools?: readonly ToolSchema[];
}, inputLimit: number): number;
export {};
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