import type { Context, Middleware, Next } from '../types.js';
export interface ApiVersionOptions {
    defaultVersion?: string;
    header?: string;
    paramName?: string;
}
export declare class ApiVersion implements Middleware {
    private defaultVersion;
    private header;
    private paramName;
    constructor(options?: ApiVersionOptions);
    handle(ctx: Context, next: Next): Promise<void>;
}
export declare function apiVersion(options?: ApiVersionOptions): ApiVersion;
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