import type { ProviderMessage } from "../providers/ProviderTypes.js";
export interface BudgetEstimate {
    totalTokens: number;
    systemTokens: number;
    bundleTokens: number;
    historyTokens: number;
}
export declare const DEFAULT_CHAR_PER_TOKEN = 4;
export declare const DEFAULT_MODEL_TOKEN_LIMIT = 8192;
export declare const estimateTokens: (text: string, charPerToken?: number) => number;
export declare const estimateMessagesTokens: (messages: ProviderMessage[], charPerToken?: number) => number;
export declare const estimateBudget: (input: {
    systemPrompt?: string;
    bundle?: string;
    history?: ProviderMessage[];
    charPerToken?: number;
}) => BudgetEstimate;
export declare const resolveModelTokenLimit: (model: string, overrides?: Record<string, number>, fallback?: number) => number;
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