Method preflightFunc

lib.esm/utils/fetch.js:334–336

* This function is called prior to each request, for example * during a redirection or retry in case of server throttling. * * This offers an opportunity to populate headers or update * content before sending a request.

()

     *  content before sending a request.
     */
    get preflightFunc() {
        return this.#preflight || null;
    }
    set preflightFunc(preflight) {
        this.#preflight = preflight;
    }