NodeClass.js

class Node {
  currentNodeConfig


  currentNetworkConfig;
  networkConfigs;
  nodeConfigs;

  constructor(configs) {
    Object.assign(this, ...configs);
  }

  setNodeConfig(key) {
    if (this.nodeConfigs[key]) {
      this.currentNodeConfig = this.nodeConfigs[key];
    } else {
      throw Error(`"${key}" is an invalid node config`);
    }
  }
  setNetworkConfig(key) {
    if (this.networkConfigs[key]) {
      this.currentNetworkConfig = this.networkConfigs[key];
    } else {
      throw Error(`"${key}" is an invalid network config`);
    }
  }
  getConfig(): NodeConfig {
    return this.currentNodeConfig;
  }
  getNetwork(): NetworkConfig {
    return this.currentNetworkConfig;
  }

  sendRPCRequest = async (requestObj: RPCRequest): Promise<JsonRpcResponse> => {
    const { txObj, parser, errorHandler } = requestObj;
    const response = await fetch(this.currentNodeConfig.endpoint, {
      method: 'POST',
      headers: {
        'Content-Type': 'application/json'
      },
      body: JSON.stringify(txObj)
    }).then(r => r.json());
    
    const result = response.error
      ? errorHandler(response.error)
      : parser(response);
    return result;
  };
}
const node = new Node({ networkConfigs, nodeConfigs });
const proxiedNode = rerouteRPCMethodsHandler(node);

export default proxiedNode;