nest/packages/core/helpers/external-proxy.ts

import { ExternalExceptionsHandler } from '../exceptions/external-exceptions-handler.js';
import { ExecutionContextHost } from '../helpers/execution-context-host.js';
import type { ContextType } from '@nestjs/common';

export class ExternalErrorProxy {
  public createProxy<TContext extends string = ContextType>(
    targetCallback: (...args: any[]) => any,
    exceptionsHandler: ExternalExceptionsHandler,
    type?: TContext,
  ) {
    return async (...args: any[]) => {
      try {
        return await targetCallback(...args);
      } catch (e) {
        const host = new ExecutionContextHost(args);
        host.setType<TContext>(type!);
        return exceptionsHandler.next(e, host);
      }
    };
  }
}