import type { MessagePort } from 'node:worker_threads';
export interface IWorkerData {
    projectionPort: MessagePort;
    viewPort: MessagePort;
}
export declare const isWorkerData: (obj: unknown) => obj is IWorkerData;
export type WorkerInitMessage = {
    type: 'ready';
};
export declare const isWorkerInitMessage: (msg: unknown) => msg is WorkerInitMessage;