infisical/frontend/components/utilities/SecurityClient.js

import token from "~/pages/api/auth/Token";

export default class SecurityClient {
  static #token = "";

  constructor() {}

  static setToken(token) {
    this.#token = token;
  }

  static async fetchCall(resource, options) {
    let req = new Request(resource, options);

    if (this.#token == "") {
      this.setToken(await token());
    }

    if (this.#token) {
      req.headers.set("Authorization", "Bearer " + this.#token);
      return fetch(req);
    }
  }
}