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116 lines
3.1 KiB
116 lines
3.1 KiB
'use strict'; |
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var escapeStringRegexp = require('escape-string-regexp'); |
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var ansiStyles = require('ansi-styles'); |
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var stripAnsi = require('strip-ansi'); |
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var hasAnsi = require('has-ansi'); |
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var supportsColor = require('supports-color'); |
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var defineProps = Object.defineProperties; |
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var isSimpleWindowsTerm = process.platform === 'win32' && !/^xterm/i.test(process.env.TERM); |
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function Chalk(options) { |
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// detect mode if not set manually |
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this.enabled = !options || options.enabled === undefined ? supportsColor : options.enabled; |
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} |
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// use bright blue on Windows as the normal blue color is illegible |
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if (isSimpleWindowsTerm) { |
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ansiStyles.blue.open = '\u001b[94m'; |
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} |
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var styles = (function () { |
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var ret = {}; |
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Object.keys(ansiStyles).forEach(function (key) { |
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ansiStyles[key].closeRe = new RegExp(escapeStringRegexp(ansiStyles[key].close), 'g'); |
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ret[key] = { |
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get: function () { |
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return build.call(this, this._styles.concat(key)); |
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} |
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}; |
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}); |
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return ret; |
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})(); |
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var proto = defineProps(function chalk() {}, styles); |
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function build(_styles) { |
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var builder = function () { |
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return applyStyle.apply(builder, arguments); |
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}; |
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builder._styles = _styles; |
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builder.enabled = this.enabled; |
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// __proto__ is used because we must return a function, but there is |
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// no way to create a function with a different prototype. |
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/* eslint-disable no-proto */ |
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builder.__proto__ = proto; |
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return builder; |
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} |
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function applyStyle() { |
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// support varags, but simply cast to string in case there's only one arg |
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var args = arguments; |
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var argsLen = args.length; |
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var str = argsLen !== 0 && String(arguments[0]); |
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if (argsLen > 1) { |
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// don't slice `arguments`, it prevents v8 optimizations |
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for (var a = 1; a < argsLen; a++) { |
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str += ' ' + args[a]; |
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} |
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} |
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if (!this.enabled || !str) { |
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return str; |
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} |
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var nestedStyles = this._styles; |
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var i = nestedStyles.length; |
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// Turns out that on Windows dimmed gray text becomes invisible in cmd.exe, |
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// see https://github.com/chalk/chalk/issues/58 |
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// If we're on Windows and we're dealing with a gray color, temporarily make 'dim' a noop. |
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var originalDim = ansiStyles.dim.open; |
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if (isSimpleWindowsTerm && (nestedStyles.indexOf('gray') !== -1 || nestedStyles.indexOf('grey') !== -1)) { |
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ansiStyles.dim.open = ''; |
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} |
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while (i--) { |
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var code = ansiStyles[nestedStyles[i]]; |
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// Replace any instances already present with a re-opening code |
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// otherwise only the part of the string until said closing code |
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// will be colored, and the rest will simply be 'plain'. |
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str = code.open + str.replace(code.closeRe, code.open) + code.close; |
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} |
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// Reset the original 'dim' if we changed it to work around the Windows dimmed gray issue. |
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ansiStyles.dim.open = originalDim; |
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return str; |
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} |
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function init() { |
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var ret = {}; |
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Object.keys(styles).forEach(function (name) { |
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ret[name] = { |
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get: function () { |
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return build.call(this, [name]); |
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} |
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}; |
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}); |
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return ret; |
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} |
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defineProps(Chalk.prototype, init()); |
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module.exports = new Chalk(); |
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module.exports.styles = ansiStyles; |
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module.exports.hasColor = hasAnsi; |
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module.exports.stripColor = stripAnsi; |
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module.exports.supportsColor = supportsColor;
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