dayjs: Chrome v88 (88.0.4324.93) for Android does not recognize date

I wrote this polyfill to fix this issue. It is really ugly, but it should work.

// Chrome toLocaleString bug
(() => {
    let testDate = new Date(2021, 0, 17, 20, 16, 51);
    if (Intl?.DateTimeFormat != null) {
        let str = testDate.toLocaleString('en-US');
        if (str.indexOf('PM') == -1 || Number.isNaN(new Date(str).valueOf())) {
            if (new Intl.DateTimeFormat('cs-CZ').formatToParts != null) {


                let original = Date.prototype.toLocaleString;
                Date.prototype.toLocaleString = function (locale, opts) {
                    if (locale != 'en-US' || opts == null || Object.keys(opts).length != 1) {
                        return original.call(this, locale, opts);
                    }

                    let format = new Intl.DateTimeFormat('cs-CZ', {
                        year: 'numeric',
                        month: 'numeric',
                        day: 'numeric',
                        hour: 'numeric',
                        minute: 'numeric',
                        second: 'numeric',
                        hour12: false,
                        timeZone: opts.timeZone
                    });
                    let parts = format.formatToParts(this);
                    let component = (type) => {
                        return parseInt(parts.filter(x => x.type == type)[0].value, 10);
                    };
                    return new Date(component('year'), component('month') - 1, component('day'), component('hour'), component('minute'), component('second')).toISOString();
                };
            }
        }
    }
})();

Notice: This code is only usable if you do not use “toLocaleString” anywhere, except dayjs. It just fix dayjs, but can break other code (if it use toLocaleString method).

Looks like chrome started to ignore locale in arguments ECMA-402