import { Writable } from 'node:stream';
import { ExecPayload } from './schema.js';
export declare const WEBHOOK_FLUSH_INTERVAL_MS = 100;
export declare function isEnvelopeObject(obj: unknown): obj is Record<string, unknown>;
export declare function extractEnvelope(tail: string): {
    parsed: Record<string, unknown>;
    start: number;
    end: number;
} | null;
export declare function parseEnvelopeFromTail(tailStr: string): Record<string, unknown> | null;
export declare function createWebhookStream(filePath: string, payload: ExecPayload): Writable;
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