import type { PromptEntry } from "./types.js";
/** Conservative chars/4 token heuristic, matching cli-node's estimateTokens. */
export declare function estimateTextTokens(text: string): number;
/** Deterministic filler of exactly `length` chars (a-z cycling, offset by `seed`). */
export declare function fillerText(length: number, seed?: number): string;
/** Join a stable head and ordered entries into one deterministic prompt string. */
export declare function serializePrompt(systemText: string, toolsText: string, entries: PromptEntry[]): string;
//# sourceMappingURL=tokens.d.ts.map