Stirling-PDF/frontend/src/core/services/apiClientSetup.ts

import { AxiosInstance } from 'axios';
import { getBrowserId } from '@app/utils/browserIdentifier';

export function setupApiInterceptors(client: AxiosInstance): void {
  // Add browser ID header for WAU tracking
  client.interceptors.request.use(
    (config) => {
      const browserId = getBrowserId();
      config.headers['X-Browser-Id'] = browserId;
      return config;
    },
    (error) => Promise.reject(error)
  );
}