import type { Message } from '../core/session/session-jsonl.js';
export declare const CHARS_PER_TOKEN_ESTIMATE = 4;
export type TokenEstimateOptions = {
    includeThinking?: boolean;
};
export declare function estimateTokensForText(text: string): number;
export declare function estimateMessageChars(message: Message, options?: TokenEstimateOptions): number;
export declare function estimateMessagesChars(messages: Message[], options?: TokenEstimateOptions): number;
export declare function estimateMessageTokens(message: Message, options?: TokenEstimateOptions): number;
export declare function estimateMessagesTokens(messages: Message[], options?: TokenEstimateOptions): number;
export declare function resolveContextCharsPerTokenUnit(): number;
export declare function estimatePromptUnitsForContextWindow(params: {
    messages: Message[];
    systemPrompt: string;
    charsPerTokenUnit: number;
    effectiveContextWindowTokens?: number;
    includeThinking?: boolean;
}): number;
//# sourceMappingURL=tokens.d.ts.map