index.js
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'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 = $;