api.getReactiveState()
Description
Gets the state object that stores current values of most FilterBuilder propertiesUsage
api.getReactiveState(): object;
Returns
The method returns an object with the following parameters:
{
   value: {}; //an object that stores all the filters in a tree-like structure
   fields: [];// the list of fields
   options: {}; //the list of options for each field
}  
Properties description you can find here: FilterBuilder properties overview
Example
import { getData } from "./common/data";
import { FilterBuilder } from "@svar-ui/react-filter";
export default function App() {
  const { value, fields, options } = getData();
  const init = (api) => {
    const { fields } = api.getReactiveState();
    console.log(fields); // outputs the list of fields to console
  };
  return `<FilterBuilder value={value} options={options} fields={fields} init={init} />`;
}
Related articles: How to access FilterBuilder API