117 lines
3.1 KiB
JavaScript
117 lines
3.1 KiB
JavaScript
'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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