liquidjs/dist/liquid.node.js

A simple, expressive and safe Shopify / Github Pages compatible template engine in pure JavaScript.

/*
 * liquidjs@10.21.1, https://github.com/harttle/liquidjs
 * (c) 2016-2025 harttle
 * Released under the MIT License.
 */
'use strict';

Object.defineProperty(exports, '__esModule', { value: true });

var stream = require('stream');
var path = require('path');
var fs$1 = require('fs');

class Token {
    constructor(kind, input, begin, end, file) {
        this.kind = kind;
        this.input = input;
        this.begin = begin;
        this.end = end;
        this.file = file;
    }
    getText() {
        return this.input.slice(this.begin, this.end);
    }
    getPosition() {
        let [row, col] = [1, 1];
        for (let i = 0; i < this.begin; i++) {
            if (this.input[i] === '\n') {
                row++;
                col = 1;
            }
            else
                col++;
        }
        return [row, col];
    }
    size() {
        return this.end - this.begin;
    }
}

class Drop {
    liquidMethodMissing(key) {
        return undefined;
    }
}

const toString$1 = Object.prototype.toString;
const toLowerCase = String.prototype.toLowerCase;
const hasOwnProperty = Object.hasOwnProperty;
function isString(value) {
    return typeof value === 'string';
}
// eslint-disable-next-line @typescript-eslint/ban-types
function isFunction(value) {
    return typeof value === 'function';
}
function isPromise(val) {
    return val && isFunction(val.then);
}
function isIterator(val) {
    return val && isFunction(val.next) && isFunction(val.throw) && isFunction(val.return);
}
function escapeRegex(str) {
    return str.replace(/[-/\\^$*+?.()|[\]{}]/g, '\\$&');
}
function promisify(fn) {
    return function (...args) {
        return new Promise((resolve, reject) => {
            fn(...args, (err, result) => {
                err ? reject(err) : resolve(result);
            });
        });
    };
}
function stringify(value) {
    value = toValue(value);
    if (isString(value))
        return value;
    if (isNil(value))
        return '';
    if (isArray(value))
        return value.map(x => stringify(x)).join('');
    return String(value);
}
function toEnumerable(val) {
    val = toValue(val);
    if (isArray(val))
        return val;
    if (isString(val) && val.length > 0)
        return [val];
    if (isIterable(val))
        return Array.from(val);
    if (isObject(val))
        return Object.keys(val).map((key) => [key, val[key]]);
    return [];
}
function toArray(val) {
    val = toValue(val);
    if (isNil(val))
        return [];
    if (isArray(val))
        return val;
    return [val];
}
function toValue(value) {
    return (value instanceof Drop && isFunction(value.valueOf)) ? value.valueOf() : value;
}
function toNumber(value) {
    value = Number(value);
    return isNaN(value) ? 0 : value;
}
function isNumber(value) {
    return typeof value === 'number';
}
function toLiquid(value) {
    if (value && isFunction(value.toLiquid))
        return toLiquid(value.toLiquid());
    return value;
}
function isNil(value) {
    return value == null;
}
function isUndefined(value) {
    return value === undefined;
}
function isArray(value) {
    // be compatible with IE 8
    return toString$1.call(value) === '[object Array]';
}
function isArrayLike(value) {
    return value && isNumber(value.length);
}
function isIterable(value) {
    return isObject(value) && Symbol.iterator in value;
}
/*
 * Iterates over own enumerable string keyed properties of an object and invokes iteratee for each property.
 * The iteratee is invoked with three arguments: (value, key, object).
 * Iteratee functions may exit iteration early by explicitly returning false.
 * @param {Object} object The object to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @return {Object} Returns object.
 */
function forOwn(obj, iteratee) {
    obj = obj || {};
    for (const k in obj) {
        if (hasOwnProperty.call(obj, k)) {
            if (iteratee(obj[k], k, obj) === false)
                break;
        }
    }
    return obj;
}
function last(arr) {
    return arr[arr.length - 1];
}
/*
 * Checks if value is the language type of Object.
 * (e.g. arrays, functions, objects, regexes, new Number(0), and new String(''))
 * @param {any} value The value to check.
 * @return {Boolean} Returns true if value is an object, else false.
 */
function isObject(value) {
    const type = typeof value;
    return value !== null && (type === 'object' || type === 'function');
}
function range(start, stop, step = 1) {
    const arr = [];
    for (let i = start; i < stop; i += step) {
        arr.push(i);
    }
    return arr;
}
function padStart(str, length, ch = ' ') {
    return pad(str, length, ch, (str, ch) => ch + str);
}
function padEnd(str, length, ch = ' ') {
    return pad(str, length, ch, (str, ch) => str + ch);
}
function pad(str, length, ch, add) {
    str = String(str);
    let n = length - str.length;
    while (n-- > 0)
        str = add(str, ch);
    return str;
}
function identify(val) {
    return val;
}
function changeCase(str) {
    const hasLowerCase = [...str].some(ch => ch >= 'a' && ch <= 'z');
    return hasLowerCase ? str.toUpperCase() : str.toLowerCase();
}
function ellipsis(str, N) {
    return str.length > N ? str.slice(0, N - 3) + '...' : str;
}
// compare string in case-insensitive way, undefined values to the tail
function caseInsensitiveCompare(a, b) {
    if (a == null && b == null)
        return 0;
    if (a == null)
        return 1;
    if (b == null)
        return -1;
    a = toLowerCase.call(a);
    b = toLowerCase.call(b);
    if (a < b)
        return -1;
    if (a > b)
        return 1;
    return 0;
}
function argumentsToValue(fn) {
    return function (...args) { return fn.call(this, ...args.map(toValue)); };
}
function escapeRegExp(text) {
    return text.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, '\\$&');
}
/** Return an array containing unique elements from _array_. Works with nested arrays and objects. */
function* strictUniq(array) {
    const seen = new Set();
    for (const element of array) {
        const key = JSON.stringify(element);
        if (!seen.has(key)) {
            seen.add(key);
            yield element;
        }
    }
}

/**
 * targeting ES5, extends Error won't create a proper prototype chain, need a trait to keep track of classes
 */
const TRAIT = '__liquidClass__';
class LiquidError extends Error {
    constructor(err, token) {
        /**
         * note: for ES5 targeting, `this` will be replaced by return value of Error(),
         * thus everything on `this` will be lost, avoid calling `LiquidError` methods here
         */
        super(typeof err === 'string' ? err : err.message);
        this.context = '';
        if (typeof err !== 'string')
            Object.defineProperty(this, 'originalError', { value: err, enumerable: false });
        Object.defineProperty(this, 'token', { value: token, enumerable: false });
        Object.defineProperty(this, TRAIT, { value: 'LiquidError', enumerable: false });
    }
    update() {
        Object.defineProperty(this, 'context', { value: mkContext(this.token), enumerable: false });
        this.message = mkMessage(this.message, this.token);
        this.stack = this.message + '\n' + this.context +
            '\n' + this.stack;
        if (this.originalError)
            this.stack += '\nFrom ' + this.originalError.stack;
    }
    static is(obj) {
        return obj?.[TRAIT] === 'LiquidError';
    }
}
class TokenizationError extends LiquidError {
    constructor(message, token) {
        super(message, token);
        this.name = 'TokenizationError';
        super.update();
    }
}
class ParseError extends LiquidError {
    constructor(err, token) {
        super(err, token);
        this.name = 'ParseError';
        this.message = err.message;
        super.update();
    }
}
class RenderError extends LiquidError {
    constructor(err, tpl) {
        super(err, tpl.token);
        this.name = 'RenderError';
        this.message = err.message;
        super.update();
    }
    static is(obj) {
        return obj.name === 'RenderError';
    }
}
class LiquidErrors extends LiquidError {
    constructor(errors) {
        super(errors[0], errors[0].token);
        this.errors = errors;
        this.name = 'LiquidErrors';
        const s = errors.length > 1 ? 's' : '';
        this.message = `${errors.length} error${s} found`;
        super.update();
    }
    static is(obj) {
        return obj.name === 'LiquidErrors';
    }
}
class UndefinedVariableError extends LiquidError {
    constructor(err, token) {
        super(err, token);
        this.name = 'UndefinedVariableError';
        this.message = err.message;
        super.update();
    }
}
// only used internally; raised where we don't have token information,
// so it can't be an UndefinedVariableError.
class InternalUndefinedVariableError extends Error {
    constructor(variableName) {
        super(`undefined variable: ${variableName}`);
        this.name = 'InternalUndefinedVariableError';
        this.variableName = variableName;
    }
}
class AssertionError extends Error {
    constructor(message) {
        super(message);
        this.name = 'AssertionError';
        this.message = message + '';
    }
}
function mkContext(token) {
    const [line, col] = token.getPosition();
    const lines = token.input.split('\n');
    const begin = Math.max(line - 2, 1);
    const end = Math.min(line + 3, lines.length);
    const context = range(begin, end + 1)
        .map(lineNumber => {
        const rowIndicator = (lineNumber === line) ? '>> ' : '   ';
        const num = padStart(String(lineNumber), String(end).length);
        let text = `${rowIndicator}${num}| `;
        const colIndicator = lineNumber === line
            ? '\n' + padStart('^', col + text.length)
            : '';
        text += lines[lineNumber - 1];
        text += colIndicator;
        return text;
    })
        .join('\n');
    return context;
}
function mkMessage(msg, token) {
    if (token.file)
        msg += `, file:${token.file}`;
    const [line, col] = token.getPosition();
    msg += `, line:${line}, col:${col}`;
    return msg;
}

// **DO NOT CHANGE THIS FILE**
//
// This file is generated by bin/character-gen.js
// bitmask character types to boost performance
const TYPES = [0, 0, 0, 0, 0, 0, 0, 0, 0, 20, 4, 4, 4, 20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 20, 2, 8, 0, 0, 0, 0, 8, 0, 0, 0, 64, 0, 65, 0, 0, 33, 33, 33, 33, 33, 33, 33, 33, 33, 33, 0, 0, 2, 2, 2, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0];
const WORD = 1;
const BLANK = 4;
const QUOTE = 8;
const INLINE_BLANK = 16;
const NUMBER = 32;
const SIGN = 64;
const PUNCTUATION = 128;
function isWord(char) {
    const code = char.charCodeAt(0);
    return code >= 128 ? !TYPES[code] : !!(TYPES[code] & WORD);
}
TYPES[160] = TYPES[5760] = TYPES[6158] = TYPES[8192] = TYPES[8193] = TYPES[8194] = TYPES[8195] = TYPES[8196] = TYPES[8197] = TYPES[8198] = TYPES[8199] = TYPES[8200] = TYPES[8201] = TYPES[8202] = TYPES[8232] = TYPES[8233] = TYPES[8239] = TYPES[8287] = TYPES[12288] = BLANK;
TYPES[8220] = TYPES[8221] = PUNCTUATION;

function assert(predicate, message) {
    if (!predicate) {
        const msg = typeof message === 'function'
            ? message()
            : (message || `expect ${predicate} to be true`);
        throw new AssertionError(msg);
    }
}
function assertEmpty(predicate, message = `unexpected ${JSON.stringify(predicate)}`) {
    assert(!predicate, message);
}

class NullDrop extends Drop {
    equals(value) {
        return isNil(toValue(value));
    }
    gt() {
        return false;
    }
    geq() {
        return false;
    }
    lt() {
        return false;
    }
    leq() {
        return false;
    }
    valueOf() {
        return null;
    }
}

class EmptyDrop extends Drop {
    equals(value) {
        if (value instanceof EmptyDrop)
            return false;
        value = toValue(value);
        if (isString(value) || isArray(value))
            return value.length === 0;
        if (isObject(value))
            return Object.keys(value).length === 0;
        return false;
    }
    gt() {
        return false;
    }
    geq() {
        return false;
    }
    lt() {
        return false;
    }
    leq() {
        return false;
    }
    valueOf() {
        return '';
    }
    static is(value) {
        return value instanceof EmptyDrop;
    }
}

class BlankDrop extends EmptyDrop {
    equals(value) {
        if (value === false)
            return true;
        if (isNil(toValue(value)))
            return true;
        if (isString(value))
            return /^\s*$/.test(value);
        return super.equals(value);
    }
    static is(value) {
        return value instanceof BlankDrop;
    }
}

class ForloopDrop extends Drop {
    constructor(length, collection, variable) {
        super();
        this.i = 0;
        this.length = length;
        this.name = `${variable}-${collection}`;
    }
    next() {
        this.i++;
    }
    index0() {
        return this.i;
    }
    index() {
        return this.i + 1;
    }
    first() {
        return this.i === 0;
    }
    last() {
        return this.i === this.length - 1;
    }
    rindex() {
        return this.length - this.i;
    }
    rindex0() {
        return this.length - this.i - 1;
    }
    valueOf() {
        return JSON.stringify(this);
    }
}

class SimpleEmitter {
    constructor() {
        this.buffer = '';
    }
    write(html) {
        this.buffer += stringify(html);
    }
}

class StreamedEmitter {
    constructor() {
        this.buffer = '';
        this.stream = new stream.PassThrough();
    }
    write(html) {
        this.stream.write(stringify(html));
    }
    error(err) {
        this.stream.emit('error', err);
    }
    end() {
        this.stream.end();
    }
}

class KeepingTypeEmitter {
    constructor() {
        this.buffer = '';
    }
    write(html) {
        html = toValue(html);
        // This will only preserve the type if the value is isolated.
        // I.E:
        // {{ my-port }} -> 42
        // {{ my-host }}:{{ my-port }} -> 'host:42'
        if (typeof html !== 'string' && this.buffer === '') {
            this.buffer = html;
        }
        else {
            this.buffer = stringify(this.buffer) + stringify(html);
        }
    }
}

class BlockDrop extends Drop {
    constructor(
    // the block render from layout template
    superBlockRender = () => '') {
        super();
        this.superBlockRender = superBlockRender;
    }
    /**
     * Provide parent access in child block by
     * {{ block.super }}
     */
    *super() {
        const emitter = new SimpleEmitter();
        yield this.superBlockRender(emitter);
        return emitter.buffer;
    }
}

function isComparable(arg) {
    return (arg &&
        isFunction(arg.equals) &&
        isFunction(arg.gt) &&
        isFunction(arg.geq) &&
        isFunction(arg.lt) &&
        isFunction(arg.leq));
}

const nil = new NullDrop();
const literalValues = {
    'true': true,
    'false': false,
    'nil': nil,
    'null': nil,
    'empty': new EmptyDrop(),
    'blank': new BlankDrop()
};

function createTrie(input) {
    const trie = {};
    for (const [name, data] of Object.entries(input)) {
        let node = trie;
        for (let i = 0; i < name.length; i++) {
            const c = name[i];
            node[c] = node[c] || {};
            if (i === name.length - 1 && isWord(name[i])) {
                node[c].needBoundary = true;
            }
            node = node[c];
        }
        node.data = data;
        node.end = true;
    }
    return trie;
}

// convert an async iterator to a Promise
async function toPromise(val) {
    if (!isIterator(val))
        return val;
    let value;
    let done = false;
    let next = 'next';
    do {
        const state = val[next](value);
        done = state.done;
        value = state.value;
        next = 'next';
        try {
            if (isIterator(value))
                value = toPromise(value);
            if (isPromise(value))
                value = await value;
        }
        catch (err) {
            next = 'throw';
            value = err;
        }
    } while (!done);
    return value;
}
// convert an async iterator to a value in a synchronous manner
function toValueSync(val) {
    if (!isIterator(val))
        return val;
    let value;
    let done = false;
    let next = 'next';
    do {
        const state = val[next](value);
        done = state.done;
        value = state.value;
        next = 'next';
        if (isIterator(value)) {
            try {
                value = toValueSync(value);
            }
            catch (err) {
                next = 'throw';
                value = err;
            }
        }
    } while (!done);
    return value;
}

const rFormat = /%([-_0^#:]+)?(\d+)?([EO])?(.)/;
// prototype extensions
function daysInMonth(d) {
    const feb = isLeapYear(d) ? 29 : 28;
    return [31, feb, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
}
function getDayOfYear(d) {
    let num = 0;
    for (let i = 0; i < d.getMonth(); ++i) {
        num += daysInMonth(d)[i];
    }
    return num + d.getDate();
}
function getWeekOfYear(d, startDay) {
    // Skip to startDay of this week
    const now = getDayOfYear(d) + (startDay - d.getDay());
    // Find the first startDay of the year
    const jan1 = new Date(d.getFullYear(), 0, 1);
    const then = (7 - jan1.getDay() + startDay);
    return String(Math.floor((now - then) / 7) + 1);
}
function isLeapYear(d) {
    const year = d.getFullYear();
    return !!((year & 3) === 0 && (year % 100 || (year % 400 === 0 && year)));
}
function ordinal(d) {
    const date = d.getDate();
    if ([11, 12, 13].includes(date))
        return 'th';
    switch (date % 10) {
        case 1: return 'st';
        case 2: return 'nd';
        case 3: return 'rd';
        default: return 'th';
    }
}
function century(d) {
    return parseInt(d.getFullYear().toString().substring(0, 2), 10);
}
// default to 0
const padWidths = {
    d: 2,
    e: 2,
    H: 2,
    I: 2,
    j: 3,
    k: 2,
    l: 2,
    L: 3,
    m: 2,
    M: 2,
    S: 2,
    U: 2,
    W: 2
};
const padSpaceChars = new Set('aAbBceklpP');
function getTimezoneOffset(d, opts) {
    const nOffset = Math.abs(d.getTimezoneOffset());
    const h = Math.floor(nOffset / 60);
    const m = nOffset % 60;
    return (d.getTimezoneOffset() > 0 ? '-' : '+') +
        padStart(h, 2, '0') +
        (opts.flags[':'] ? ':' : '') +
        padStart(m, 2, '0');
}
const formatCodes = {
    a: (d) => d.getShortWeekdayName(),
    A: (d) => d.getLongWeekdayName(),
    b: (d) => d.getShortMonthName(),
    B: (d) => d.getLongMonthName(),
    c: (d) => d.toLocaleString(),
    C: (d) => century(d),
    d: (d) => d.getDate(),
    e: (d) => d.getDate(),
    H: (d) => d.getHours(),
    I: (d) => String(d.getHours() % 12 || 12),
    j: (d) => getDayOfYear(d),
    k: (d) => d.getHours(),
    l: (d) => String(d.getHours() % 12 || 12),
    L: (d) => d.getMilliseconds(),
    m: (d) => d.getMonth() + 1,
    M: (d) => d.getMinutes(),
    N: (d, opts) => {
        const width = Number(opts.width) || 9;
        const str = String(d.getMilliseconds()).slice(0, width);
        return padEnd(str, width, '0');
    },
    p: (d) => (d.getHours() < 12 ? 'AM' : 'PM'),
    P: (d) => (d.getHours() < 12 ? 'am' : 'pm'),
    q: (d) => ordinal(d),
    s: (d) => Math.round(d.getTime() / 1000),
    S: (d) => d.getSeconds(),
    u: (d) => d.getDay() || 7,
    U: (d) => getWeekOfYear(d, 0),
    w: (d) => d.getDay(),
    W: (d) => getWeekOfYear(d, 1),
    x: (d) => d.toLocaleDateString(),
    X: (d) => d.toLocaleTimeString(),
    y: (d) => d.getFullYear().toString().slice(2, 4),
    Y: (d) => d.getFullYear(),
    z: getTimezoneOffset,
    Z: (d, opts) => d.getTimeZoneName() || getTimezoneOffset(d, opts),
    't': () => '\t',
    'n': () => '\n',
    '%': () => '%'
};
formatCodes.h = formatCodes.b;
function strftime(d, formatStr) {
    let output = '';
    let remaining = formatStr;
    let match;
    while ((match = rFormat.exec(remaining))) {
        output += remaining.slice(0, match.index);
        remaining = remaining.slice(match.index + match[0].length);
        output += format(d, match);
    }
    return output + remaining;
}
function format(d, match) {
    const [input, flagStr = '', width, modifier, conversion] = match;
    const convert = formatCodes[conversion];
    if (!convert)
        return input;
    const flags = {};
    for (const flag of flagStr)
        flags[flag] = true;
    let ret = String(convert(d, { flags, width, modifier }));
    let padChar = padSpaceChars.has(conversion) ? ' ' : '0';
    let padWidth = width || padWidths[conversion] || 0;
    if (flags['^'])
        ret = ret.toUpperCase();
    else if (flags['#'])
        ret = changeCase(ret);
    if (flags['_'])
        padChar = ' ';
    else if (flags['0'])
        padChar = '0';
    if (flags['-'])
        padWidth = 0;
    return padStart(ret, padWidth, padChar);
}

function getDateTimeFormat() {
    return (typeof Intl !== 'undefined' ? Intl.DateTimeFormat : undefined);
}

// one minute in milliseconds
const OneMinute = 60000;
/**
 * Need support both ISO8601 and RFC2822 as in major browsers & NodeJS
 * RFC2822: https://datatracker.ietf.org/doc/html/rfc2822#section-3.3
 */
const TIMEZONE_PATTERN = /([zZ]|([+-])(\d{2}):?(\d{2}))$/;
const monthNames = [
    'January', 'February', 'March', 'April', 'May', 'June', 'July', 'August',
    'September', 'October', 'November', 'December'
];
const monthNamesShort = monthNames.map(name => name.slice(0, 3));
const dayNames = [
    'Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday'
];
const dayNamesShort = dayNames.map(name => name.slice(0, 3));
/**
 * A date implementation with timezone info, just like Ruby date
 *
 * Implementation:
 * - create a Date offset by it's timezone difference, avoiding overriding a bunch of methods
 * - rewrite getTimezoneOffset() to trick strftime
 */
class LiquidDate {
    constructor(init, locale, timezone) {
        this.locale = locale;
        this.DateTimeFormat = getDateTimeFormat();
        this.date = new Date(init);
        this.timezoneFixed = timezone !== undefined;
        if (timezone === undefined) {
            timezone = this.date.getTimezoneOffset();
        }
        this.timezoneOffset = isString(timezone) ? LiquidDate.getTimezoneOffset(timezone, this.date) : timezone;
        this.timezoneName = isString(timezone) ? timezone : '';
        const diff = (this.date.getTimezoneOffset() - this.timezoneOffset) * OneMinute;
        const time = this.date.getTime() + diff;
        this.displayDate = new Date(time);
    }
    getTime() {
        return this.displayDate.getTime();
    }
    getMilliseconds() {
        return this.displayDate.getMilliseconds();
    }
    getSeconds() {
        return this.displayDate.getSeconds();
    }
    getMinutes() {
        return this.displayDate.getMinutes();
    }
    getHours() {
        return this.displayDate.getHours();
    }
    getDay() {
        return this.displayDate.getDay();
    }
    getDate() {
        return this.displayDate.getDate();
    }
    getMonth() {
        return this.displayDate.getMonth();
    }
    getFullYear() {
        return this.displayDate.getFullYear();
    }
    toLocaleString(locale, init) {
        if (init?.timeZone) {
            return this.date.toLocaleString(locale, init);
        }
        return this.displayDate.toLocaleString(locale, init);
    }
    toLocaleTimeString(locale) {
        return this.displayDate.toLocaleTimeString(locale);
    }
    toLocaleDateString(locale) {
        return this.displayDate.toLocaleDateString(locale);
    }
    getTimezoneOffset() {
        return this.timezoneOffset;
    }
    getTimeZoneName() {
        if (this.timezoneFixed)
            return this.timezoneName;
        if (!this.DateTimeFormat)
            return;
        return this.DateTimeFormat().resolvedOptions().timeZone;
    }
    getLongMonthName() {
        return this.format({ month: 'long' }) ?? monthNames[this.getMonth()];
    }
    getShortMonthName() {
        return this.format({ month: 'short' }) ?? monthNamesShort[this.getMonth()];
    }
    getLongWeekdayName() {
        return this.format({ weekday: 'long' }) ?? dayNames[this.displayDate.getDay()];
    }
    getShortWeekdayName() {
        return this.format({ weekday: 'short' }) ?? dayNamesShort[this.displayDate.getDay()];
    }
    valid() {
        return !isNaN(this.getTime());
    }
    format(options) {
        return this.DateTimeFormat && this.DateTimeFormat(this.locale, options).format(this.displayDate);
    }
    /**
     * Create a Date object fixed to it's declared Timezone. Both
     * - 2021-08-06T02:29:00.000Z and
     * - 2021-08-06T02:29:00.000+08:00
     * will always be displayed as
     * - 2021-08-06 02:29:00
     * regardless timezoneOffset in JavaScript realm
     *
     * The implementation hack:
     * Instead of calling `.getMonth()`/`.getUTCMonth()` respect to `preserveTimezones`,
     * we create a different Date to trick strftime, it's both simpler and more performant.
     * Given that a template is expected to be parsed fewer times than rendered.
     */
    static createDateFixedToTimezone(dateString, locale) {
        const m = dateString.match(TIMEZONE_PATTERN);
        // representing a UTC timestamp
        if (m && m[1] === 'Z') {
            return new LiquidDate(+new Date(dateString), locale, 0);
        }
        // has a timezone specified
        if (m && m[2] && m[3] && m[4]) {
            const [, , sign, hours, minutes] = m;
            const offset = (sign === '+' ? -1 : 1) * (parseInt(hours, 10) * 60 + parseInt(minutes, 10));
            return new LiquidDate(+new Date(dateString), locale, offset);
        }
        return new LiquidDate(dateString, locale);
    }
    static getTimezoneOffset(timezoneName, date) {
        const localDateString = date.toLocaleString('en-US', { timeZone: timezoneName });
        const utcDateString = date.toLocaleString('en-US', { timeZone: 'UTC' });
        const localDate = new Date(localDateString);
        const utcDate = new Date(utcDateString);
        return (+utcDate - +localDate) / (60 * 1000);
    }
}

class Limiter {
    constructor(resource, limit) {
        this.base = 0;
        this.message = `${resource} limit exceeded`;
        this.limit = limit;
    }
    use(count) {
        count = toNumber(count);
        assert(this.base + count <= this.limit, this.message);
        this.base += count;
    }
    check(count) {
        count = toNumber(count);
        assert(count <= this.limit, this.message);
    }
}

class DelimitedToken extends Token {
    constructor(kind, [contentBegin, contentEnd], input, begin, end, trimLeft, trimRight, file) {
        super(kind, input, begin, end, file);
        this.trimLeft = false;
        this.trimRight = false;
        const tl = input[contentBegin] === '-';
        const tr = input[contentEnd - 1] === '-';
        let l = tl ? contentBegin + 1 : contentBegin;
        let r = tr ? contentEnd - 1 : contentEnd;
        while (l < r && (TYPES[input.charCodeAt(l)] & BLANK))
            l++;
        while (r > l && (TYPES[input.charCodeAt(r - 1)] & BLANK))
            r--;
        this.contentRange = [l, r];
        this.trimLeft = tl || trimLeft;
        this.trimRight = tr || trimRight;
    }
    get content() {
        return this.input.slice(this.contentRange[0], this.contentRange[1]);
    }
}

class TagToken extends DelimitedToken {
    constructor(input, begin, end, options, file) {
        const { trimTagLeft, trimTagRight, tagDelimiterLeft, tagDelimiterRight } = options;
        const [valueBegin, valueEnd] = [begin + tagDelimiterLeft.length, end - tagDelimiterRight.length];
        super(exports.TokenKind.Tag, [valueBegin, valueEnd], input, begin, end, trimTagLeft, trimTagRight, file);
        this.tokenizer = new Tokenizer(input, options.operators, file, this.contentRange);
        this.name = this.tokenizer.readTagName();
        this.tokenizer.assert(this.name, `illegal tag syntax, tag name expected`);
        this.tokenizer.skipBlank();
        this.args = this.tokenizer.input.slice(this.tokenizer.p, this.contentRange[1]);
    }
}

class OutputToken extends DelimitedToken {
    constructor(input, begin, end, options, file) {
        const { trimOutputLeft, trimOutputRight, outputDelimiterLeft, outputDelimiterRight } = options;
        const valueRange = [begin + outputDelimiterLeft.length, end - outputDelimiterRight.length];
        super(exports.TokenKind.Output, valueRange, input, begin, end, trimOutputLeft, trimOutputRight, file);
    }
}

class HTMLToken extends Token {
    constructor(input, begin, end, file) {
        super(exports.TokenKind.HTML, input, begin, end, file);
        this.input = input;
        this.begin = begin;
        this.end = end;
        this.file = file;
        this.trimLeft = 0;
        this.trimRight = 0;
    }
    getContent() {
        return this.input.slice(this.begin + this.trimLeft, this.end - this.trimRight);
    }
}

class NumberToken extends Token {
    constructor(input, begin, end, file) {
        super(exports.TokenKind.Number, input, begin, end, file);
        this.input = input;
        this.begin = begin;
        this.end = end;
        this.file = file;
        this.content = Number(this.getText());
    }
}

class IdentifierToken extends Token {
    constructor(input, begin, end, file) {
        super(exports.TokenKind.Word, input, begin, end, file);
        this.input = input;
        this.begin = begin;
        this.end = end;
        this.file = file;
        this.content = this.getText();
    }
}

class LiteralToken extends Token {
    constructor(input, begin, end, file) {
        super(exports.TokenKind.Literal, input, begin, end, file);
        this.input = input;
        this.begin = begin;
        this.end = end;
        this.file = file;
        this.literal = this.getText();
        this.content = literalValues[this.literal];
    }
}

const operatorPrecedences = {
    '==': 2,
    '!=': 2,
    '>': 2,
    '<': 2,
    '>=': 2,
    '<=': 2,
    'contains': 2,
    'not': 1,
    'and': 0,
    'or': 0
};
const operatorTypes = {
    '==': 0 /* OperatorType.Binary */,
    '!=': 0 /* OperatorType.Binary */,
    '>': 0 /* OperatorType.Binary */,
    '<': 0 /* OperatorType.Binary */,
    '>=': 0 /* OperatorType.Binary */,
    '<=': 0 /* OperatorType.Binary */,
    'contains': 0 /* OperatorType.Binary */,
    'not': 1 /* OperatorType.Unary */,
    'and': 0 /* OperatorType.Binary */,
    'or': 0 /* OperatorType.Binary */
};
class OperatorToken extends Token {
    constructor(input, begin, end, file) {
        super(exports.TokenKind.Operator, input, begin, end, file);
        this.input = input;
        this.begin = begin;
        this.end = end;
        this.file = file;
        this.operator = this.getText();
    }
    getPrecedence() {
        const key = this.getText();
        return key in operatorPrecedences ? operatorPrecedences[key] : 1;
    }
}

class PropertyAccessToken extends Token {
    constructor(variable, props, input, begin, end, file) {
        super(exports.TokenKind.PropertyAccess, input, begin, end, file);
        this.variable = variable;
        this.props = props;
    }
}

class FilterToken extends Token {
    constructor(name, args, input, begin, end, file) {
        super(exports.TokenKind.Filter, input, begin, end, file);
        this.name = name;
        this.args = args;
    }
}

class HashToken extends Token {
    constructor(input, begin, end, name, value, file) {
        super(exports.TokenKind.Hash, input, begin, end, file);
        this.input = input;
        this.begin = begin;
        this.end = end;
        this.name = name;
        this.value = value;
        this.file = file;
    }
}

const rHex = /[\da-fA-F]/;
const rOct = /[0-7]/;
const escapeChar = {
    b: '\b',
    f: '\f',
    n: '\n',
    r: '\r',
    t: '\t',
    v: '\x0B'
};
function hexVal(c) {
    const code = c.charCodeAt(0);
    if (code >= 97)
        return code - 87;
    if (code >= 65)
        return code - 55;
    return code - 48;
}
function parseStringLiteral(str) {
    let ret = '';
    for (let i = 1; i < str.length - 1; i++) {
        if (str[i] !== '\\') {
            ret += str[i];
            continue;
        }
        if (escapeChar[str[i + 1]] !== undefined) {
            ret += escapeChar[str[++i]];
        }
        else if (str[i + 1] === 'u') {
            let val = 0;
            let j = i + 2;
            while (j <= i + 5 && rHex.test(str[j])) {
                val = val * 16 + hexVal(str[j++]);
            }
            i = j - 1;
            ret += String.fromCharCode(val);
        }
        else if (!rOct.test(str[i + 1])) {
            ret += str[++i];
        }
        else {
            let j = i + 1;
            let val = 0;
            while (j <= i + 3 && rOct.test(str[j])) {
                val = val * 8 + hexVal(str[j++]);
            }
            i = j - 1;
            ret += String.fromCharCode(val);
        }
    }
    return ret;
}

class QuotedToken extends Token {
    constructor(input, begin, end, file) {
        super(exports.TokenKind.Quoted, input, begin, end, file);
        this.input = input;
        this.begin = begin;
        this.end = end;
        this.file = file;
        this.content = parseStringLiteral(this.getText());
    }
}

class RangeToken extends Token {
    constructor(input, begin, end, lhs, rhs, file) {
        super(exports.TokenKind.Range, input, begin, end, file);
        this.input = input;
        this.begin = begin;
        this.end = end;
        this.lhs = lhs;
        this.rhs = rhs;
        this.file = file;
    }
}

/**
 * LiquidTagToken is different from TagToken by not having delimiters `{%` or `%}`
 */
class LiquidTagToken extends DelimitedToken {
    constructor(input, begin, end, options, file) {
        super(exports.TokenKind.Tag, [begin, end], input, begin, end, false, false, file);
        this.tokenizer = new Tokenizer(input, options.operators, file, this.contentRange);
        this.name = this.tokenizer.readTagName();
        this.tokenizer.assert(this.name, 'illegal liquid tag syntax');
        this.tokenizer.skipBlank();
    }
    get args() {
        return this.tokenizer.input.slice(this.tokenizer.p, this.contentRange[1]);
    }
}

/**
 * value expression with optional filters
 * e.g.
 * {% assign foo="bar" | append: "coo" %}
 */
class FilteredValueToken extends Token {
    constructor(initial, filters, input, begin, end, file) {
        super(exports.TokenKind.FilteredValue, input, begin, end, file);
        this.initial = initial;
        this.filters = filters;
        this.input = input;
        this.begin = begin;
        this.end = end;
        this.file = file;
    }
}

const polyfill = {
    now: () => Date.now()
};
function getPerformance() {
    return (typeof global === 'object' && global.performance) ||
        (typeof window === 'object' && window.performance) ||
        polyfill;
}

class Render {
    renderTemplatesToNodeStream(templates, ctx) {
        const emitter = new StreamedEmitter();
        Promise.resolve().then(() => toPromise(this.renderTemplates(templates, ctx, emitter)))
            .then(() => emitter.end(), err => emitter.error(err));
        return emitter.stream;
    }
    *renderTemplates(templates, ctx, emitter) {
        if (!emitter) {
            emitter = ctx.opts.keepOutputType ? new KeepingTypeEmitter() : new SimpleEmitter();
        }
        const errors = [];
        for (const tpl of templates) {
            ctx.renderLimit.check(getPerformance().now());
            try {
                // if tpl.render supports emitter, it'll return empty `html`
                const html = yield tpl.render(ctx, emitter);
                // if not, it'll return an `html`, write to the emitter for it
                html && emitter.write(html);
                if (ctx.breakCalled || ctx.continueCalled)
                    break;
            }
            catch (e) {
                const err = LiquidError.is(e) ? e : new RenderError(e, tpl);
                if (ctx.opts.catchAllErrors)
                    errors.push(err);
                else
                    throw err;
            }
        }
        if (errors.length) {
            throw new LiquidErrors(errors);
        }
        return emitter.buffer;
    }
}

class Expression {
    constructor(tokens) {
        this.postfix = [...toPostfix(tokens)];
    }
    *evaluate(ctx, lenient) {
        assert(ctx, 'unable to evaluate: context not defined');
        const operands = [];
        for (const token of this.postfix) {
            if (isOperatorToken(token)) {
                const r = operands.pop();
                let result;
                if (operatorTypes[token.operator] === 1 /* OperatorType.Unary */) {
                    result = yield ctx.opts.operators[token.operator](r, ctx);
                }
                else {
                    const l = operands.pop();
                    result = yield ctx.opts.operators[token.operator](l, r, ctx);
                }
                operands.push(result);
            }
            else {
                operands.push(yield evalToken(token, ctx, lenient));
            }
        }
        return operands[0];
    }
    valid() {
        return !!this.postfix.length;
    }
}
function* evalToken(token, ctx, lenient = false) {
    if (!token)
        return;
    if ('content' in token)
        return token.content;
    if (isPropertyAccessToken(token))
        return yield evalPropertyAccessToken(token, ctx, lenient);
    if (isRangeToken(token))
        return yield evalRangeToken(token, ctx);
}
function* evalPropertyAccessToken(token, ctx, lenient) {
    const props = [];
    for (const prop of token.props) {
        props.push((yield evalToken(prop, ctx, false)));
    }
    try {
        if (token.variable) {
            const variable = yield evalToken(token.variable, ctx, lenient);
            return yield ctx._getFromScope(variable, props);
        }
        else {
            return yield ctx._get(props);
        }
    }
    catch (e) {
        if (lenient && e.name === 'InternalUndefinedVariableError')
            return null;
        throw (new UndefinedVariableError(e, token));
    }
}
function evalQuotedToken(token) {
    return token.content;
}
function* evalRangeToken(token, ctx) {
    const low = yield evalToken(token.lhs, ctx);
    const high = yield evalToken(token.rhs, ctx);
    ctx.memoryLimit.use(high - low + 1);
    return range(+low, +high + 1);
}
function* toPostfix(tokens) {
    const ops = [];
    for (const token of tokens) {
        if (isOperatorToken(token)) {
            while (ops.length && ops[ops.length - 1].getPrecedence() > token.getPrecedence()) {
                yield ops.pop();
            }
            ops.push(token);
        }
        else
            yield token;
    }
    while (ops.length) {
        yield ops.pop();
    }
}

function isTruthy(val, ctx) {
    return !isFalsy(val, ctx);
}
function isFalsy(val, ctx) {
    val = toValue(val);
    if (ctx.opts.jsTruthy) {
        return !val;
    }
    else {
        return val === false || undefined === val || val === null;
    }
}

const defaultOperators = {
    '==': equals,
    '!=': (l, r) => !equals(l, r),
    '>': (l, r) => {
        if (isComparable(l))
            return l.gt(r);
        if (isComparable(r))
            return r.lt(l);
        return toValue(l) > toValue(r);
    },
    '<': (l, r) => {
        if (isComparable(l))
            return l.lt(r);
        if (isComparable(r))
            return r.gt(l);
        return toValue(l) < toValue(r);
    },
    '>=': (l, r) => {
        if (isComparable(l))
            return l.geq(r);
        if (isComparable(r))
            return r.leq(l);
        return toValue(l) >= toValue(r);
    },
    '<=': (l, r) => {
        if (isComparable(l))
            return l.leq(r);
        if (isComparable(r))
            return r.geq(l);
        return toValue(l) <= toValue(r);
    },
    'contains': (l, r) => {
        l = toValue(l);
        if (isArray(l))
            return l.some((i) => equals(i, r));
        if (isFunction(l?.indexOf))
            return l.indexOf(toValue(r)) > -1;
        return false;
    },
    'not': (v, ctx) => isFalsy(toValue(v), ctx),
    'and': (l, r, ctx) => isTruthy(toValue(l), ctx) && isTruthy(toValue(r), ctx),
    'or': (l, r, ctx) => isTruthy(toValue(l), ctx) || isTruthy(toValue(r), ctx)
};
function equals(lhs, rhs) {
    if (isComparable(lhs))
        return lhs.equals(rhs);
    if (isComparable(rhs))
        return rhs.equals(lhs);
    lhs = toValue(lhs);
    rhs = toValue(rhs);
    if (isArray(lhs)) {
        return isArray(rhs) && arrayEquals(lhs, rhs);
    }
    return lhs === rhs;
}
function arrayEquals(lhs, rhs) {
    if (lhs.length !== rhs.length)
        return false;
    return !lhs.some((value, i) => !equals(value, rhs[i]));
}
function arrayIncludes(arr, item) {
    return arr.some(value => equals(value, item));
}

class Node {
    constructor(key, value, next, prev) {
        this.key = key;
        this.value = value;
        this.next = next;
        this.prev = prev;
    }
}
class LRU {
    constructor(limit, size = 0) {
        this.limit = limit;
        this.size = size;
        this.cache = {};
        this.head = new Node('HEAD', null, null, null);
        this.tail = new Node('TAIL', null, null, null);
        this.head.next = this.tail;
        this.tail.prev = this.head;
    }
    write(key, value) {
        if (this.cache[key]) {
            this.cache[key].value = value;
        }
        else {
            const node = new Node(key, value, this.head.next, this.head);
            this.head.next.prev = node;
            this.head.next = node;
            this.cache[key] = node;
            this.size++;
            this.ensureLimit();
        }
    }
    read(key) {
        if (!this.cache[key])
            return;
        const { value } = this.cache[key];
        this.remove(key);
        this.write(key, value);
        return value;
    }
    remove(key) {
        const node = this.cache[key];
        node.prev.next = node.next;
        node.next.prev = node.prev;
        delete this.cache[key];
        this.size--;
    }
    clear() {
        this.head.next = this.tail;
        this.tail.prev = this.head;
        this.size = 0;
        this.cache = {};
    }
    ensureLimit() {
        if (this.size > this.limit)
            this.remove(this.tail.prev.key);
    }
}

const requireResolve = (partial) => require.resolve(partial, { paths: ['.'] });

const statAsync = promisify(fs$1.stat);
const readFileAsync = promisify(fs$1.readFile);
async function exists(filepath) {
    try {
        await statAsync(filepath);
        return true;
    }
    catch (err) {
        return false;
    }
}
function readFile(filepath) {
    return readFileAsync(filepath, 'utf8');
}
function existsSync(filepath) {
    try {
        fs$1.statSync(filepath);
        return true;
    }
    catch (err) {
        return false;
    }
}
function readFileSync(filepath) {
    return fs$1.readFileSync(filepath, 'utf8');
}
function resolve(root, file, ext) {
    if (!path.extname(file))
        file += ext;
    return path.resolve(root, file);
}
function fallback(file) {
    try {
        return requireResolve(file);
    }
    catch (e) { }
}
function dirname(filepath) {
    return path.dirname(filepath);
}
function contains(root, file) {
    root = path.resolve(root);
    root = root.endsWith(path.sep) ? root : root + path.sep;
    return file.startsWith(root);
}

var fs = /*#__PURE__*/Object.freeze({
  __proto__: null,
  exists: exists,
  readFile: readFile,
  existsSync: existsSync,
  readFileSync: readFileSync,
  resolve: resolve,
  fallback: fallback,
  dirname: dirname,
  contains: contains,
  sep: path.sep
});

function defaultFilter(value, defaultValue, ...args) {
    value = toValue(value);
    if (isArray(value) || isString(value))
        return value.length ? value : defaultValue;
    if (value === false && (new Map(args)).get('allow_false'))
        return false;
    return isFalsy(value, this.context) ? defaultValue : value;
}
function json(value, space = 0) {
    return JSON.stringify(value, null, space);
}
function inspect(value, space = 0) {
    const ancestors = [];
    return JSON.stringify(value, function (_key, value) {
        if (typeof value !== 'object' || value === null)
            return value;
        // `this` is the object that value is contained in, i.e., its direct parent.
        while (ancestors.length > 0 && ancestors[ancestors.length - 1] !== this)
            ancestors.pop();
        if (ancestors.includes(value))
            return '[Circular]';
        ancestors.push(value);
        return value;
    }, space);
}
function to_integer(value) {
    return Number(value);
}
const raw = {
    raw: true,
    handler: identify
};
var misc = {
    default: defaultFilter,
    raw,
    jsonify: json,
    to_integer,
    json,
    inspect
};

const escapeMap = {
    '&': '&amp;',
    '<': '&lt;',
    '>': '&gt;',
    '"': '&#34;',
    "'": '&#39;'
};
const unescapeMap = {
    '&amp;': '&',
    '&lt;': '<',
    '&gt;': '>',
    '&#34;': '"',
    '&#39;': "'"
};
function escape(str) {
    str = stringify(str);
    this.context.memoryLimit.use(str.length);
    return str.replace(/&|<|>|"|'/g, m => escapeMap[m]);
}
function xml_escape(str) {
    return escape.call(this, str);
}
function unescape(str) {
    str = stringify(str);
    this.context.memoryLimit.use(str.length);
    return str.replace(/&(amp|lt|gt|#34|#39);/g, m => unescapeMap[m]);
}
function escape_once(str) {
    return escape.call(this, unescape.call(this, str));
}
function newline_to_br(v) {
    const str = stringify(v);
    this.context.memoryLimit.use(str.length);
    return str.replace(/\r?\n/gm, '<br />\n');
}
function strip_html(v) {
    const str = stringify(v);
    this.context.memoryLimit.use(str.length);
    return str.replace(/<script[\s\S]*?<\/script>|<style[\s\S]*?<\/style>|<.*?>|<!--[\s\S]*?-->/g, '');
}

var htmlFilters = /*#__PURE__*/Object.freeze({
  __proto__: null,
  escape: escape,
  xml_escape: xml_escape,
  escape_once: escape_once,
  newline_to_br: newline_to_br,
  strip_html: strip_html
});

class MapFS {
    constructor(mapping) {
        this.mapping = mapping;
        this.sep = '/';
    }
    async exists(filepath) {
        return this.existsSync(filepath);
    }
    existsSync(filepath) {
        return !isNil(this.mapping[filepath]);
    }
    async readFile(filepath) {
        return this.readFileSync(filepath);
    }
    readFileSync(filepath) {
        const content = this.mapping[filepath];
        if (isNil(content))
            throw new Error(`ENOENT: ${filepath}`);
        return content;
    }
    dirname(filepath) {
        const segments = filepath.split(this.sep);
        segments.pop();
        return segments.join(this.sep);
    }
    resolve(dir, file, ext) {
        file += ext;
        if (dir === '.')
            return file;
        const segments = dir.split(/\/+/);
        for (const segment of file.split(this.sep)) {
            if (segment === '.' || segment === '')
                continue;
            else if (segment === '..') {
                if (segments.length > 1 || segments[0] !== '')
                    segments.pop();
            }
            else
                segments.push(segment);
        }
        return segments.join(this.sep);
    }
}

const defaultOptions = {
    root: ['.'],
    layouts: ['.'],
    partials: ['.'],
    relativeReference: true,
    jekyllInclude: false,
    keyValueSeparator: ':',
    cache: undefined,
    extname: '',
    fs: fs,
    dynamicPartials: true,
    jsTruthy: false,
    dateFormat: '%A, %B %-e, %Y at %-l:%M %P %z',
    locale: '',
    trimTagRight: false,
    trimTagLeft: false,
    trimOutputRight: false,
    trimOutputLeft: false,
    greedy: true,
    tagDelimiterLeft: '{%',
    tagDelimiterRight: '%}',
    outputDelimiterLeft: '{{',
    outputDeli