import type { ContextBudget, RankedRef } from "./context-bundle.js";
export declare function estimateTokens(text: string): number;
export interface BudgetedSelection {
    readonly selected: readonly RankedRef[];
    readonly omitted: readonly RankedRef[];
    readonly truncated: boolean;
    readonly estimatedTokens: number;
}
export declare function applyBudget(ranked: readonly RankedRef[], budget: ContextBudget, perRefTokenEstimate: (ref: RankedRef) => number): BudgetedSelection;
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