import { type CodexSpend, type SpendStats } from "./ledger-schema.ts";
interface SessionUsageOptions {
    root: string;
    from: number;
    to: number;
    model?: string | undefined;
}
interface SessionSpend extends CodexSpend {
    path: string;
    reasoning: string;
    reasoningSource: string;
    nonstandard: boolean;
}
export declare function scanSessionUsage(options: SessionUsageOptions, visit: (spend: SessionSpend) => void): Promise<{
    sessions: number;
    skippedCopies: number;
    incompleteEntries: number;
    unattributedUsage: number;
    unreadablePaths: number;
    warnings: string[];
}>;
export declare function analyseSessions(options: SessionUsageOptions & {
    limit: number;
}): Promise<{
    from: string;
    toExclusive: string;
    nonstandard: boolean;
    scope: string;
    groups: {
        model: string;
        reasoning: string;
        reasoningSource: string;
        stats: SpendStats;
    }[];
    sessions: {
        path: string;
        stats: {
            usd: number;
            input: number;
            output: number;
            cacheRead: number;
            cacheWrite: number;
            requests: number;
            unpriced: number;
        };
    }[];
    sessionCount: number;
    coverage: {
        sessions: number;
        skippedCopies: number;
        incompleteEntries: number;
        unattributedUsage: number;
        unreadablePaths: number;
        warnings: string[];
        unsavedRequests: string;
    };
}>;
export {};