if (!Array.prototype.remove) {
    Array.prototype.remove = function (elem) {
        var index = this.indexOf(elem, 0);
        if (index > -1) {
            this.splice(index, 1);
            return true;
        }
        return false;
    };
}
if (!Array.prototype.pop_front) {
    Array.prototype.pop_front = function () {
        if (this.length == 0)
            return undefined;
        return this.splice(0, 1)[0];
    };
}
if (!Array.prototype.last) {
    Array.prototype.last = function () {
        if (this.length == 0)
            return undefined;
        return this[this.length - 1];
    };
}
if (!$.spawn) {
    $.spawn = function (tagName) {
        return $(document.createElement(tagName));
    };
}
if (!String.prototype.format) {
    String.prototype.format = function () {
        var args = arguments;
        return this.replace(/\{\{|\}\}|\{(\d+)\}/g, function (m, n) {
            if (m == "{{") {
                return "{";
            }
            if (m == "}}") {
                return "}";
            }
            return args[n];
        });
    };
}
function concatenate(resultConstructor, ...arrays) {
    let totalLength = 0;
    for (const arr of arrays) {
        totalLength += arr.length;
    }
    const result = new resultConstructor(totalLength);
    let offset = 0;
    for (const arr of arrays) {
        result.set(arr, offset);
        offset += arr.length;
    }
    return result;
}
function formatDate(secs) {
    let years = Math.floor(secs / (60 * 60 * 24 * 365));
    let days = Math.floor(secs / (60 * 60 * 24)) % 365;
    let hours = Math.floor(secs / (60 * 60)) % 24;
    let minutes = Math.floor(secs / 60) % 60;
    let seconds = Math.floor(secs % 60);
    let result = "";
    if (years > 0)
        result += years + " years ";
    if (years > 0 || days > 0)
        result += days + " days ";
    if (years > 0 || days > 0 || hours > 0)
        result += hours + " hours ";
    if (years > 0 || days > 0 || hours > 0 || minutes > 0)
        result += minutes + " minutes ";
    if (years > 0 || days > 0 || hours > 0 || minutes > 0 || seconds > 0)
        result += seconds + " seconds ";
    else
        result = "now ";
    return result.substr(0, result.length - 1);
}
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