Module not always loading correctly

[HyperC]

The module sometimes fails to load correctly, resulting in all the address fields to just show instantly (not the postcode + huisnr autocomplete fields). This happens in 1 out of 10 times or so, using an incognito browser. You need a fresh incognito session to get the error. The error in console:

jQuery.Deferred exception: this.addressFields is not a function TypeError: this.addressFields is not a function at UiClass.onChangeCountry (https://xxxx/nl_NL/Flekto_Postcode/js/form/components/address-autofill-nl.js:76:18)

You then see all fields directly on load:

[JelleGe]

We have the same issue on M2.4.4

[HyperC]

We temporarily fixed it by creating a mixin on Flekto_Postcode/web/js/form/components/address-autofill-nl.js

onChangeCountry: async function () {
            if (typeof this.addressFields !== 'function') {
                var self = this;
                let setFields = new Promise(function(resolve, reject) {
                    self.addressFields = Registry.async([
                        self.parentName + '.street',
                        self.parentName + '.city',
                        self.parentName + '.postcode',
                        self.parentName + '.region_id_input',
                    ]);

                    setTimeout(function () {
                        resolve();
                    }, 500);
                });

                await setFields;
            }

            this.addressFields(function () { // Wait for address fields to be available.
                const isNl = this.isNl();

                this.childPostcode().visible(isNl);
                this.childHouseNumber().visible(isNl);
                this.childHouseNumberSelect().visible(isNl && this.childHouseNumberSelect().options().length > 0);
                this.toggleFields(!isNl, true);

                if (isNl) {
                    this.resetInputAddress();
                }
            }.bind(this));
        },

It's not the prettiest, but we haven't encountered the issue since.