import type { NotificationMessage } from "../types.ts";
import type { NotificationChannel } from "../channels.ts";
export declare class WebhookChannel implements NotificationChannel {
    readonly kind: "webhook";
    private url;
    private headers;
    private timeoutMs;
    constructor(url: string, headers: Record<string, string> | undefined, timeoutMs: number | undefined);
    send(message: NotificationMessage): Promise<void>;
    dispose(): Promise<void>;
}
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