spark.JsonRpcResponse

export interface JsonRpcResponse {
  /** JSON-RPC version */
  jsonrpc: '2.0';
  /** Result from successful method call */
  result?: unknown;
  /** Error from failed method call */
  error?: JsonRpcError;
  /** Request ID that this response corresponds to */
  id?: string;
}

jsonrpc('2.0'): – JSON-RPC version
result(unknown)optional: – Result from successful method call
error(JsonRpcError)optional: – Error from failed method call
id(string)optional: – Request ID that this response corresponds to

JSON-RPC 2.0 response.

Contains either a result or an error, but not both.