import type { GfiState, GfiEvent, GfiPolicy, GfiStage, GfiSnapshot } from './gfi-types.js';
import { DEFAULT_GFI_POLICY } from './gfi-policy.js';
export { DEFAULT_GFI_POLICY };
export declare function applyFriction(state: GfiState, event: GfiEvent, policy: GfiPolicy): GfiState;
export declare function applyDecay(state: GfiState, elapsedMinutes: number, policy: GfiPolicy, stage: GfiStage, nowMs: number): GfiState;
export declare function applyRelief(state: GfiState, opts: {
    source: string;
    amount?: number;
}, nowMs: number, policy?: GfiPolicy): GfiState;
export declare function classifyGfiStage(gfi: number, policy: GfiPolicy): GfiStage;
export declare function createGfiSnapshot(state: GfiState, policy: GfiPolicy): GfiSnapshot;
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