envelope/core/static/django-htmx.js

{
    const data = document.currentScript.dataset;
    const isDebug = data.debug === "True";

    if (isDebug) {
        document.addEventListener("htmx:beforeOnLoad", function (event) {
            const xhr = event.detail.xhr;
            if (xhr.status == 500 || xhr.status == 404) {
                // Tell htmx to stop processing this response
                event.stopPropagation();

                document.children[0].innerHTML = xhr.response;

                // Run Django’s inline script
                // (1, eval) wtf - see https://stackoverflow.com/questions/9107240/1-evalthis-vs-evalthis-in-javascript
                (1, eval)(document.scripts[0].innerText);
                // Need to directly call Django’s onload function since browser won’t
                window.onload();
            }
        });
    }
}