import nodeFetch, {Response as FetchResponse} from 'node-fetch';

export default abstract class BaseConnection {
  protected isNode(): boolean {
    if (typeof process === 'object') {
      // eslint-disable-next-line no-undef
      if (typeof process.versions === 'object') {
        // eslint-disable-next-line no-undef
        if (typeof process.versions.node !== 'undefined') {
          return true;
        }
      }
    }



    return false;
  }

  protected async fetch(url: string, options: {body?: string, headers?: Record<string, string>, method?: string}): Promise<FetchResponse | Response> {
    return this.isNode() ? nodeFetch(url, options) : window.fetch(url, options);
  }
}