@nestjs/websockets/context/ws-proxy.js

Nest - modern, fast, powerful node.js web framework (@websockets)

import { EMPTY, isObservable } from 'rxjs';
import { catchError } from 'rxjs/operators';
import { ExecutionContextHost } from '@nestjs/core/internal';
export class WsProxy {
    create(targetCallback, exceptionsHandler, targetPattern) {
        return async (...args) => {
            args = [...args, targetPattern ?? 'unknown'];
            try {
                const result = await targetCallback(...args);
                return !isObservable(result)
                    ? result
                    : result.pipe(catchError(error => {
                        this.handleError(exceptionsHandler, args, error);
                        return EMPTY;
                    }));
            }
            catch (error) {
                this.handleError(exceptionsHandler, args, error);
            }
        };
    }
    handleError(exceptionsHandler, args, error) {
        const host = new ExecutionContextHost(args);
        host.setType('ws');
        exceptionsHandler.handle(error, host);
    }
}