parameterized-rest-layout-service.ts

import { RestLayoutService, RestLayoutServiceConfig } from '@sitecore-jss/sitecore-jss-nextjs';

interface FetchParams {
  [param: string]: string | number | boolean;
  sc_apikey: string;
  sc_site: string;
  sc_lang: string;
  tracking: boolean;
}

export class ParameterizedRestLayoutService extends RestLayoutService {
  constructor(private config: RestLayoutServiceConfig) {
    super(config);
  }

  protected getFetchParams = (language?: string): FetchParams => {
    return {
      sc_apikey: this.config.apiKey,
      sc_site: this.config.siteName,
      sc_lang: language || '',
      tracking: this.config.tracking ?? true,
      custom_parameter: '🩹 lorem ipsum',
    };
  };
}