import type { UsageAccount } from "./ledger-schema.ts";
export declare function usageReport(account: UsageAccount, now?: number): {
    since: number;
    nonstandard: boolean;
    history: ({
        from: number;
        to: number;
        windowStart: number;
        root: string;
        coverage: {
            sessions: number;
            skippedCopies: number;
            incompleteEntries: number;
            unattributedUsage: number;
            warnings: string[];
        } & {
            unreadablePaths?: number | undefined;
        };
        importedAt: number;
        accountIdentity: "unverified";
    } & {}) | undefined;
    lifetime: {
        usd: number;
        input: number;
        output: number;
        cacheRead: number;
        cacheWrite: number;
        requests: number;
        unpriced: number;
    } & {};
    current: ({
        start: number;
        expectedReset: number;
        source: "inferred" | "manual" | "session-history";
        partial: boolean;
        summary: {
            total: {
                usd: number;
                input: number;
                output: number;
                cacheRead: number;
                cacheWrite: number;
                requests: number;
                unpriced: number;
            } & {};
            models: Record<string, {
                usd: number;
                input: number;
                output: number;
                cacheRead: number;
                cacheWrite: number;
                requests: number;
                unpriced: number;
            } & {}>;
        } & {};
    } & {
        approximate?: boolean | undefined;
        quota?: ({
            at: number;
            usedPercent: number;
            usd: number;
        } & {}) | undefined;
        quotaPerUsd?: number | undefined;
    }) | undefined;
    previous: ({
        start: number;
        expectedReset: number;
        source: "inferred" | "manual" | "session-history";
        partial: boolean;
        summary: {
            total: {
                usd: number;
                input: number;
                output: number;
                cacheRead: number;
                cacheWrite: number;
                requests: number;
                unpriced: number;
            } & {};
            models: Record<string, {
                usd: number;
                input: number;
                output: number;
                cacheRead: number;
                cacheWrite: number;
                requests: number;
                unpriced: number;
            } & {}>;
        } & {};
        end: number;
        closedAt: number;
        reason: "backfill" | "early" | "gap" | "scheduled";
    } & {
        approximate?: boolean | undefined;
        quota?: ({
            at: number;
            usedPercent: number;
            usd: number;
        } & {}) | undefined;
        quotaPerUsd?: number | undefined;
        quotaEstimate?: number | undefined;
    }) | undefined;
    spendPerDay: number | undefined;
    vsPreviousWindowPercent: number | undefined;
    vsPreviousMonthPercent: number | undefined;
    previousMonth: string;
    previousMonthIncomplete: boolean;
    previousMonthApproximate: boolean;
    models: {
        usd: number;
        input: number;
        output: number;
        cacheRead: number;
        cacheWrite: number;
        requests: number;
        unpriced: number;
        model: string;
        quotaPercentEstimate: number | undefined;
    }[];
    coverage: {
        partialWindow: boolean;
        needsWeeklyObservation: boolean;
        unassignedUsd: number;
        missingWeeklyObservations: number;
        quotaStale: boolean;
        recordingGaps: number;
        unpricedRequests: number;
    };
};
export declare function formatSpendReport(report: ReturnType<typeof usageReport>): string[];