'use strict';
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const isObject = val => val !== null && typeof val === 'object' && !Array.isArray(val);
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/* eslint-disable no-control-regex */
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// this is a modified version of https://github.com/chalk/ansi-regex (MIT License)
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const ANSI_REGEX = /[\u001b\u009b][[\]#;?()]*(?:(?:(?:[^\W_]*;?[^\W_]*)\u0007)|(?:(?:[0-9]{1,4}(;[0-9]{0,4})*)?[~0-9=<>cf-nqrtyA-PRZ]))/g;
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const hasColor = () => {
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if (typeof process !== 'undefined') {
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return process.env.FORCE_COLOR !== '0';
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}
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return false;
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};
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const create = () => {
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const colors = {
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enabled: hasColor(),
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visible: true,
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styles: {},
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keys: {}
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};
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const ansi = style => {
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let open = style.open = `\u001b[${style.codes[0]}m`;
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let close = style.close = `\u001b[${style.codes[1]}m`;
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let regex = style.regex = new RegExp(`\\u001b\\[${style.codes[1]}m`, 'g');
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style.wrap = (input, newline) => {
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if (input.includes(close)) input = input.replace(regex, close + open);
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let output = open + input + close;
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// see https://github.com/chalk/chalk/pull/92, thanks to the
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// chalk contributors for this fix. However, we've confirmed that
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// this issue is also present in Windows terminals
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return newline ? output.replace(/\r*\n/g, `${close}$&${open}`) : output;
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};
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return style;
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};
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const wrap = (style, input, newline) => {
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return typeof style === 'function' ? style(input) : style.wrap(input, newline);
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};
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const style = (input, stack) => {
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if (input === '' || input == null) return '';
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if (colors.enabled === false) return input;
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if (colors.visible === false) return '';
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let str = '' + input;
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let nl = str.includes('\n');
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let n = stack.length;
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if (n > 0 && stack.includes('unstyle')) {
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stack = [...new Set(['unstyle', ...stack])].reverse();
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}
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while (n-- > 0) str = wrap(colors.styles[stack[n]], str, nl);
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return str;
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};
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const define = (name, codes, type) => {
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colors.styles[name] = ansi({ name, codes });
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let keys = colors.keys[type] || (colors.keys[type] = []);
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keys.push(name);
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Reflect.defineProperty(colors, name, {
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configurable: true,
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enumerable: true,
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set(value) {
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colors.alias(name, value);
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},
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get() {
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let color = input => style(input, color.stack);
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Reflect.setPrototypeOf(color, colors);
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color.stack = this.stack ? this.stack.concat(name) : [name];
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return color;
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}
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});
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};
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define('reset', [0, 0], 'modifier');
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define('bold', [1, 22], 'modifier');
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define('dim', [2, 22], 'modifier');
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define('italic', [3, 23], 'modifier');
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define('underline', [4, 24], 'modifier');
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define('inverse', [7, 27], 'modifier');
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define('hidden', [8, 28], 'modifier');
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define('strikethrough', [9, 29], 'modifier');
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define('black', [30, 39], 'color');
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define('red', [31, 39], 'color');
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define('green', [32, 39], 'color');
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define('yellow', [33, 39], 'color');
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define('blue', [34, 39], 'color');
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define('magenta', [35, 39], 'color');
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define('cyan', [36, 39], 'color');
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define('white', [37, 39], 'color');
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define('gray', [90, 39], 'color');
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define('grey', [90, 39], 'color');
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define('bgBlack', [40, 49], 'bg');
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define('bgRed', [41, 49], 'bg');
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define('bgGreen', [42, 49], 'bg');
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define('bgYellow', [43, 49], 'bg');
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define('bgBlue', [44, 49], 'bg');
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define('bgMagenta', [45, 49], 'bg');
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define('bgCyan', [46, 49], 'bg');
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define('bgWhite', [47, 49], 'bg');
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define('blackBright', [90, 39], 'bright');
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define('redBright', [91, 39], 'bright');
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define('greenBright', [92, 39], 'bright');
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define('yellowBright', [93, 39], 'bright');
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define('blueBright', [94, 39], 'bright');
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define('magentaBright', [95, 39], 'bright');
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define('cyanBright', [96, 39], 'bright');
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define('whiteBright', [97, 39], 'bright');
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define('bgBlackBright', [100, 49], 'bgBright');
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define('bgRedBright', [101, 49], 'bgBright');
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define('bgGreenBright', [102, 49], 'bgBright');
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define('bgYellowBright', [103, 49], 'bgBright');
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define('bgBlueBright', [104, 49], 'bgBright');
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define('bgMagentaBright', [105, 49], 'bgBright');
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define('bgCyanBright', [106, 49], 'bgBright');
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define('bgWhiteBright', [107, 49], 'bgBright');
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colors.ansiRegex = ANSI_REGEX;
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colors.hasColor = colors.hasAnsi = str => {
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colors.ansiRegex.lastIndex = 0;
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return typeof str === 'string' && str !== '' && colors.ansiRegex.test(str);
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};
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colors.alias = (name, color) => {
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let fn = typeof color === 'string' ? colors[color] : color;
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if (typeof fn !== 'function') {
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throw new TypeError('Expected alias to be the name of an existing color (string) or a function');
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}
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if (!fn.stack) {
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Reflect.defineProperty(fn, 'name', { value: name });
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colors.styles[name] = fn;
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fn.stack = [name];
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}
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Reflect.defineProperty(colors, name, {
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configurable: true,
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enumerable: true,
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set(value) {
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colors.alias(name, value);
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},
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get() {
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let color = input => style(input, color.stack);
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Reflect.setPrototypeOf(color, colors);
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color.stack = this.stack ? this.stack.concat(fn.stack) : fn.stack;
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return color;
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}
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});
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};
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colors.theme = custom => {
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if (!isObject(custom)) throw new TypeError('Expected theme to be an object');
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for (let name of Object.keys(custom)) {
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colors.alias(name, custom[name]);
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}
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return colors;
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};
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colors.alias('unstyle', str => {
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if (typeof str === 'string' && str !== '') {
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colors.ansiRegex.lastIndex = 0;
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return str.replace(colors.ansiRegex, '');
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}
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return '';
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});
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colors.alias('noop', str => str);
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colors.none = colors.clear = colors.noop;
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colors.stripColor = colors.unstyle;
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colors.symbols = require('./symbols');
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colors.define = define;
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return colors;
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};
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module.exports = create();
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module.exports.create = create;
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