infisical/frontend/components/utilities/SecurityClient.js

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

import { PATH } from "../../const";

export default class SecurityClient {
	static authOrigins = [PATH];
	static #token = "";

	contructor() {}

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

	static async fetchCall(resource, options) {
		let req = new Request(resource, options);
		const destOrigin = new URL(req.url).origin;

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

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