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- 'use strict';
- const colors = { enabled: true, visible: true, styles: {}, keys: {} };
- if ('FORCE_COLOR' in process.env) {
- colors.enabled = process.env.FORCE_COLOR !== '0';
- }
- const ansi = style => {
- style.open = `\u001b[${style.codes[0]}m`;
- style.close = `\u001b[${style.codes[1]}m`;
- style.regex = new RegExp(`\\u001b\\[${style.codes[1]}m`, 'g');
- return style;
- };
- const wrap = (style, str, nl) => {
- let { open, close, regex } = style;
- str = open + (str.includes(close) ? str.replace(regex, close + open) : str) + close;
- // see https://github.com/chalk/chalk/pull/92, thanks to the
- // chalk contributors for this fix. However, we've confirmed that
- // this issue is also present in Windows terminals
- return nl ? str.replace(/\r?\n/g, `${close}$&${open}`) : str;
- };
- const style = (input, stack) => {
- if (input === '' || input == null) return '';
- if (colors.enabled === false) return input;
- if (colors.visible === false) return '';
- let str = '' + input;
- let nl = str.includes('\n');
- let n = stack.length;
- while (n-- > 0) str = wrap(colors.styles[stack[n]], str, nl);
- return str;
- };
- const define = (name, codes, type) => {
- colors.styles[name] = ansi({ name, codes });
- let t = colors.keys[type] || (colors.keys[type] = []);
- t.push(name);
- Reflect.defineProperty(colors, name, {
- get() {
- let color = input => style(input, color.stack);
- Reflect.setPrototypeOf(color, colors);
- color.stack = this.stack ? this.stack.concat(name) : [name];
- return color;
- }
- });
- };
- define('reset', [0, 0], 'modifier');
- define('bold', [1, 22], 'modifier');
- define('dim', [2, 22], 'modifier');
- define('italic', [3, 23], 'modifier');
- define('underline', [4, 24], 'modifier');
- define('inverse', [7, 27], 'modifier');
- define('hidden', [8, 28], 'modifier');
- define('strikethrough', [9, 29], 'modifier');
- define('black', [30, 39], 'color');
- define('red', [31, 39], 'color');
- define('green', [32, 39], 'color');
- define('yellow', [33, 39], 'color');
- define('blue', [34, 39], 'color');
- define('magenta', [35, 39], 'color');
- define('cyan', [36, 39], 'color');
- define('white', [37, 39], 'color');
- define('gray', [90, 39], 'color');
- define('grey', [90, 39], 'color');
- define('bgBlack', [40, 49], 'bg');
- define('bgRed', [41, 49], 'bg');
- define('bgGreen', [42, 49], 'bg');
- define('bgYellow', [43, 49], 'bg');
- define('bgBlue', [44, 49], 'bg');
- define('bgMagenta', [45, 49], 'bg');
- define('bgCyan', [46, 49], 'bg');
- define('bgWhite', [47, 49], 'bg');
- define('blackBright', [90, 39], 'bright');
- define('redBright', [91, 39], 'bright');
- define('greenBright', [92, 39], 'bright');
- define('yellowBright', [93, 39], 'bright');
- define('blueBright', [94, 39], 'bright');
- define('magentaBright', [95, 39], 'bright');
- define('cyanBright', [96, 39], 'bright');
- define('whiteBright', [97, 39], 'bright');
- define('bgBlackBright', [100, 49], 'bgBright');
- define('bgRedBright', [101, 49], 'bgBright');
- define('bgGreenBright', [102, 49], 'bgBright');
- define('bgYellowBright', [103, 49], 'bgBright');
- define('bgBlueBright', [104, 49], 'bgBright');
- define('bgMagentaBright', [105, 49], 'bgBright');
- define('bgCyanBright', [106, 49], 'bgBright');
- define('bgWhiteBright', [107, 49], 'bgBright');
- /* eslint-disable no-control-regex */
- // this is a modified, optimized version of
- // https://github.com/chalk/ansi-regex (MIT License)
- const re = colors.ansiRegex = /[\u001b\u009b][[\]#;?()]*(?:(?:(?:[^\W_]*;?[^\W_]*)\u0007)|(?:(?:[0-9]{1,4}(;[0-9]{0,4})*)?[~0-9=<>cf-nqrtyA-PRZ]))/g;
- colors.hasColor = colors.hasAnsi = str => {
- re.lastIndex = 0;
- return !!str && typeof str === 'string' && re.test(str);
- };
- colors.unstyle = str => {
- re.lastIndex = 0;
- return typeof str === 'string' ? str.replace(re, '') : str;
- };
- colors.none = colors.clear = colors.noop = str => str; // no-op, for programmatic usage
- colors.stripColor = colors.unstyle;
- colors.symbols = require('./symbols');
- colors.define = define;
- module.exports = colors;
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