@nestjs/websockets/factories/ws-params-factory.js

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

import { WsParamtype } from '../enums/ws-paramtype.enum.js';
import { isFunction } from '@nestjs/common/internal';
export class WsParamsFactory {
    exchangeKeyForValue(type, data, args) {
        if (!args) {
            return null;
        }
        switch (type) {
            case WsParamtype.SOCKET:
                return args[0];
            case WsParamtype.PAYLOAD:
                return data ? args[1]?.[data] : args[1];
            case WsParamtype.ACK: {
                return args.find(arg => isFunction(arg));
            }
            default:
                return null;
        }
    }
}