flatmap not support on some old android device

[Zkffkah]

flatmap not support on some old android device

Some polyfill here using Asset Manager

Array.prototype.flat || Object.defineProperty(Array.prototype, "flat", {
    configurable: !0,
    value: function r() {
        var t = isNaN(arguments[0]) ? 1 : Number(arguments[0]);
        return t ? Array.prototype.reduce.call(this, function(a, e) {
            return Array.isArray(e) ? a.push.apply(a, r.call(e, t - 1)) : a.push(e),
            a
        }, []) : Array.prototype.slice.call(this)
    },
    writable: !0
}),
Array.prototype.flatMap || Object.defineProperty(Array.prototype, "flatMap", {
    configurable: !0,
    value: function(r) {
        return Array.prototype.map.apply(this, arguments).flat()
    },
    writable: !0
})