source: frontend/node_modules/kleur/index.js

'use strict';

const { FORCE_COLOR, NODE_DISABLE_COLORS, TERM } = process.env;

const $ = {
        enabled: !NODE_DISABLE_COLORS && TERM !== 'dumb' && FORCE_COLOR !== '0',

        // modifiers
        reset: init(0, 0),
        bold: init(1, 22),
        dim: init(2, 22),
        italic: init(3, 23),
        underline: init(4, 24),
        inverse: init(7, 27),
        hidden: init(8, 28),
        strikethrough: init(9, 29),

        // colors
        black: init(30, 39),
        red: init(31, 39),
        green: init(32, 39),
        yellow: init(33, 39),
        blue: init(34, 39),
        magenta: init(35, 39),
        cyan: init(36, 39),
        white: init(37, 39),
        gray: init(90, 39),
        grey: init(90, 39),

        // background colors
        bgBlack: init(40, 49),
        bgRed: init(41, 49),
        bgGreen: init(42, 49),
        bgYellow: init(43, 49),
        bgBlue: init(44, 49),
        bgMagenta: init(45, 49),
        bgCyan: init(46, 49),
        bgWhite: init(47, 49)
};

function run(arr, str) {
        let i=0, tmp, beg='', end='';
        for (; i < arr.length; i++) {
                tmp = arr[i];
                beg += tmp.open;
                end += tmp.close;
                if (str.includes(tmp.close)) {
                        str = str.replace(tmp.rgx, tmp.close + tmp.open);
                }
        }
        return beg + str + end;
}

function chain(has, keys) {
        let ctx = { has, keys };

        ctx.reset = $.reset.bind(ctx);
        ctx.bold = $.bold.bind(ctx);
        ctx.dim = $.dim.bind(ctx);
        ctx.italic = $.italic.bind(ctx);
        ctx.underline = $.underline.bind(ctx);
        ctx.inverse = $.inverse.bind(ctx);
        ctx.hidden = $.hidden.bind(ctx);
        ctx.strikethrough = $.strikethrough.bind(ctx);

        ctx.black = $.black.bind(ctx);
        ctx.red = $.red.bind(ctx);
        ctx.green = $.green.bind(ctx);
        ctx.yellow = $.yellow.bind(ctx);
        ctx.blue = $.blue.bind(ctx);
        ctx.magenta = $.magenta.bind(ctx);
        ctx.cyan = $.cyan.bind(ctx);
        ctx.white = $.white.bind(ctx);
        ctx.gray = $.gray.bind(ctx);
        ctx.grey = $.grey.bind(ctx);

        ctx.bgBlack = $.bgBlack.bind(ctx);
        ctx.bgRed = $.bgRed.bind(ctx);
        ctx.bgGreen = $.bgGreen.bind(ctx);
        ctx.bgYellow = $.bgYellow.bind(ctx);
        ctx.bgBlue = $.bgBlue.bind(ctx);
        ctx.bgMagenta = $.bgMagenta.bind(ctx);
        ctx.bgCyan = $.bgCyan.bind(ctx);
        ctx.bgWhite = $.bgWhite.bind(ctx);

        return ctx;
}

function init(open, close) {
        let blk = {
                open: `\x1b[${open}m`,
                close: `\x1b[${close}m`,
                rgx: new RegExp(`\\x1b\\[${close}m`, 'g')
        };
        return function (txt) {
                if (this !== void 0 && this.has !== void 0) {
                        this.has.includes(open) || (this.has.push(open),this.keys.push(blk));
                        return txt === void 0 ? this : $.enabled ? run(this.keys, txt+'') : txt+'';
                }
                return txt === void 0 ? chain([open], [blk]) : $.enabled ? run([blk], txt+'') : txt+'';
        };
}

module.exports = $;