import type { ProviderUsageWindow } from '../../../shared/provider-usage.js';
export declare function providerHome(): string;
export declare function readJsonFile(path: string): Promise<unknown | undefined>;
export declare function writeJsonFile(path: string, value: unknown): Promise<void>;
export declare function homePath(...parts: string[]): string;
export declare function record(value: unknown): Record<string, unknown> | undefined;
export declare function stringValue(value: unknown): string | undefined;
export declare function numberValue(value: unknown): number | undefined;
export declare function epochSecondsFromValue(value: unknown): number | undefined;
export declare function expiresSoon(value: unknown, skewSeconds?: number, nowMs?: number): boolean;
export declare function jwtExpiresSoon(token: string, skewSeconds?: number, nowMs?: number): boolean;
export declare function decodeJwtPayload(token: string): unknown | undefined;
export declare function clampPercent(value: number): number;
export declare function resetAtFromSeconds(seconds: number | undefined, nowMs?: number): string | undefined;
export declare function resetAtFromValue(value: unknown): string | undefined;
export declare function windowFromUsedPercent(label: string, usedPercent: number | undefined, input?: {
    resetsAt?: string;
    resetAfterSeconds?: number;
    windowSeconds?: number;
}): ProviderUsageWindow | undefined;
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