import { ProviderId, ProviderUsage, UsageWindow, WindowName } from "./types.js";
export declare function normalizeWindow(name: WindowName, raw: unknown, fallbackMinutes: number): UsageWindow | null;
export declare function findWindow(usage: ProviderUsage, name: WindowName): UsageWindow | undefined;
export declare function validateProviderUsage(usage: ProviderUsage): void;
export declare function makeProviderUsage(input: {
    provider: ProviderId;
    source: string;
    observedAt?: string;
    planType?: string | null;
    sessionId?: string | null;
    model?: string | null;
    fiveHour: UsageWindow;
    sevenDay: UsageWindow;
}): ProviderUsage;