/**
 * Pure helpers for rendering OAuth usage data on the profile page.
 *
 * Lives outside the inline-HTML template in profilePage.ts so the labeling
 * and formatting logic can be unit-tested. The same logic is mirrored in
 * the page's inline browser script — see profilePage.ts.
 *
 * Why duplicate at all? profilePage.ts is one big template literal that
 * runs in the browser, so we can't directly import these at runtime. We
 * inline the constants (via JSON.stringify) and re-implement the small
 * format functions in the template, with these TS versions guarding the
 * behavior via tests.
 */
/** Friendly labels for Anthropic's raw window keys. */
export declare const WINDOW_LABELS: Record<string, string>;
/**
 * Map a raw window type (e.g. "five_hour", "seven_day_opus") to a short
 * human label. Falls back to a prettified version of the key for any
 * type we haven't named (Anthropic adds new windows occasionally).
 */
export declare function labelForWindow(type: string): string;
/**
 * Bucket a 0..1 utilization value into a status used for color coding.
 * Mirrors pylon's three-tier scheme: comfortable / warning / hot.
 */
export type UsageStatus = "ok" | "warn" | "high";
export declare function classifyUtilization(utilization: number | null | undefined): UsageStatus;
/**
 * Format the time-until-reset for a window.
 *
 * `resetsAt` is a Unix epoch in milliseconds (matching Meridian's own
 * /v1/usage/quota response shape) — null when the window has no known
 * reset time.
 *
 * `now` is injectable so tests don't depend on Date.now(); production
 * callers omit it and the function uses the current time.
 */
export declare function formatResetCountdown(resetsAt: number | null | undefined, now?: number): string;
/**
 * Format an extra-usage block. Returns null when the profile has no
 * extra-usage info worth showing (disabled or missing data) — caller
 * should hide the section entirely in that case.
 */
export interface ExtraUsageDisplay {
    used: string;
    limit: string;
    utilizationPct: number;
    status: UsageStatus;
}
export declare function formatExtraUsage(eu: {
    isEnabled: boolean;
    monthlyLimit: number;
    usedCredits: number;
    utilization: number | null;
    currency: string;
} | null | undefined): ExtraUsageDisplay | null;
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