export declare const CLAUDE_USAGE_EVENT = "claude-bridge:usage";
export declare const CLAUDE_USAGE_PROVIDER = "anthropic-claude-code";
export interface ClaudeUsageWindow {
    id: "five_hour" | "weekly";
    label: "5h" | "weekly";
    windowSeconds: number;
    usedPercent: number;
    resetAt: string | null;
}
export interface ClaudeUsageReport {
    provider: typeof CLAUDE_USAGE_PROVIDER;
    observedAt: string;
    planType: string | null;
    windows: ClaudeUsageWindow[];
}
export type ClaudeUsageParse = {
    kind: "report";
    report: ClaudeUsageReport;
} | {
    kind: "not_applicable";
} | {
    kind: "invalid";
};
export declare function parseClaudeUsage(response: unknown, observedAt: string): ClaudeUsageParse;
export declare const CLAUDE_USAGE_METHOD = "usage_EXPERIMENTAL_MAY_CHANGE_DO_NOT_RELY_ON_THIS_API_YET";
export declare const DEFAULT_USAGE_INTERVAL_MS = 60000;
/** Shared switch-off rules for every way the bridge reads usage. */
export interface ClaudeUsageGuard {
    readonly disabled: boolean;
    /** One guarded read through a live query. Resolves to a report or null; never rejects. */
    read(query: unknown, now?: () => number): Promise<ClaudeUsageReport | null>;
}
export declare function createClaudeUsageGuard(onDisabled?: (reason: string) => void): ClaudeUsageGuard;
export interface ClaudeUsageReader {
    /** Read usage through a live query if a read is due. Never throws or blocks the caller. */
    maybeRead(query: unknown): void;
    readonly disabled: boolean;
}
export declare function createClaudeUsageReader(options: {
    publish: (report: ClaudeUsageReport) => void;
    onDisabled?: (reason: string) => void;
    intervalMs?: number;
    now?: () => number;
}): ClaudeUsageReader;