https://www.goodguysdumpsterservices.com/cp/resources/views/test_slot/slot/plugins/DeferredShot.js

1export default function DeferredShot(classDef) {
2    return function(opts) {
3
4        classDef.call(this, opts);
5
6        this.deferrals = [];
7        this.defer = (action) => {
8            this.deferrals.push(action);
9        };
10
11        const oldFinalize = this.finalize;
12        this.finalize = async (...args) => {
13            let action;
14            // eslint-disable-next-line no-cond-assign
15            while (action = this.deferrals.pop()) {
16                await action();
17            }
18            return await oldFinalize(...args);
19        };
20
21        const oldOnReturn = this.onreturn;
22        this.onreturn = async (...args) => {
23            let action;
24            // eslint-disable-next-line no-cond-assign
25            while (action = this.deferrals.pop()) {
26                await action();
27            }
28            return await oldOnReturn(...args);
29        };
30
31    };
32}