167 lines
5.7 KiB
Plaintext
167 lines
5.7 KiB
Plaintext
let enabled = true;
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// Support both browser and node environments
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const globalVar = typeof self !== 'undefined'
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? self
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: typeof window !== 'undefined'
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? window
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: typeof global !== 'undefined'
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? global
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: {};
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/**
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* Detect how much colors the current terminal supports
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*/
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let supportLevel = 0 /* none */;
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if (globalVar.process && globalVar.process.env && globalVar.process.stdout) {
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const { FORCE_COLOR, NODE_DISABLE_COLORS, NO_COLOR, TERM, COLORTERM } = globalVar.process.env;
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if (NODE_DISABLE_COLORS || NO_COLOR || FORCE_COLOR === '0') {
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enabled = false;
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}
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else if (FORCE_COLOR === '1' ||
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FORCE_COLOR === '2' ||
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FORCE_COLOR === '3') {
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enabled = true;
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}
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else if (TERM === 'dumb') {
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enabled = false;
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}
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else if ('CI' in globalVar.process.env &&
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[
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'TRAVIS',
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'CIRCLECI',
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'APPVEYOR',
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'GITLAB_CI',
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'GITHUB_ACTIONS',
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'BUILDKITE',
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'DRONE',
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].some(vendor => vendor in globalVar.process.env)) {
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enabled = true;
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}
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else {
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enabled = process.stdout.isTTY;
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}
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if (enabled) {
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// Windows supports 24bit True Colors since Windows 10 revision #14931,
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// see https://devblogs.microsoft.com/commandline/24-bit-color-in-the-windows-console/
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if (process.platform === 'win32') {
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supportLevel = 3 /* trueColor */;
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}
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else {
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if (COLORTERM && (COLORTERM === 'truecolor' || COLORTERM === '24bit')) {
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supportLevel = 3 /* trueColor */;
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}
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else if (TERM && (TERM.endsWith('-256color') || TERM.endsWith('256'))) {
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supportLevel = 2 /* ansi256 */;
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}
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else {
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supportLevel = 1 /* ansi */;
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}
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}
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}
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}
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export let options = {
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enabled,
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supportLevel,
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};
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function kolorist(start, end, level = 1 /* ansi */) {
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const open = `\x1b[${start}m`;
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const close = `\x1b[${end}m`;
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const regex = new RegExp(`\\x1b\\[${end}m`, 'g');
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return (str) => {
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return options.enabled && options.supportLevel >= level
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? open + ('' + str).replace(regex, open) + close
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: '' + str;
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};
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}
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// Lower colors into 256 color space
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// Taken from https://github.com/Qix-/color-convert/blob/3f0e0d4e92e235796ccb17f6e85c72094a651f49/conversions.js
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// which is MIT licensed and copyright by Heather Arthur and Josh Junon
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function rgbToAnsi256(r, g, b) {
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// We use the extended greyscale palette here, with the exception of
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// black and white. normal palette only has 4 greyscale shades.
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if (r >> 4 === g >> 4 && g >> 4 === b >> 4) {
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if (r < 8) {
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return 16;
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}
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if (r > 248) {
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return 231;
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}
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return Math.round(((r - 8) / 247) * 24) + 232;
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}
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const ansi = 16 +
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36 * Math.round((r / 255) * 5) +
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6 * Math.round((g / 255) * 5) +
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Math.round((b / 255) * 5);
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return ansi;
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}
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export function stripColors(str) {
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return ('' + str)
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.replace(/\x1b\[[0-9;]+m/g, '')
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.replace(/\x1b\]8;;.*?\x07(.*?)\x1b\]8;;\x07/g, (_, group) => group);
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}
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// modifiers
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export const reset = kolorist(0, 0);
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export const bold = kolorist(1, 22);
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export const dim = kolorist(2, 22);
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export const italic = kolorist(3, 23);
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export const underline = kolorist(4, 24);
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export const inverse = kolorist(7, 27);
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export const hidden = kolorist(8, 28);
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export const strikethrough = kolorist(9, 29);
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// colors
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export const black = kolorist(30, 39);
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export const red = kolorist(31, 39);
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export const green = kolorist(32, 39);
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export const yellow = kolorist(33, 39);
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export const blue = kolorist(34, 39);
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export const magenta = kolorist(35, 39);
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export const cyan = kolorist(36, 39);
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export const white = kolorist(97, 39);
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export const gray = kolorist(90, 39);
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export const lightGray = kolorist(37, 39);
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export const lightRed = kolorist(91, 39);
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export const lightGreen = kolorist(92, 39);
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export const lightYellow = kolorist(93, 39);
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export const lightBlue = kolorist(94, 39);
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export const lightMagenta = kolorist(95, 39);
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export const lightCyan = kolorist(96, 39);
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// background colors
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export const bgBlack = kolorist(40, 49);
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export const bgRed = kolorist(41, 49);
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export const bgGreen = kolorist(42, 49);
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export const bgYellow = kolorist(43, 49);
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export const bgBlue = kolorist(44, 49);
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export const bgMagenta = kolorist(45, 49);
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export const bgCyan = kolorist(46, 49);
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export const bgWhite = kolorist(107, 49);
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export const bgGray = kolorist(100, 49);
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export const bgLightRed = kolorist(101, 49);
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export const bgLightGreen = kolorist(102, 49);
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export const bgLightYellow = kolorist(103, 49);
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export const bgLightBlue = kolorist(104, 49);
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export const bgLightMagenta = kolorist(105, 49);
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export const bgLightCyan = kolorist(106, 49);
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export const bgLightGray = kolorist(47, 49);
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// 256 support
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export const ansi256 = (n) => kolorist('38;5;' + n, 0, 2 /* ansi256 */);
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export const ansi256Bg = (n) => kolorist('48;5;' + n, 0, 2 /* ansi256 */);
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// TrueColor 24bit support
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export const trueColor = (r, g, b) => {
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return options.supportLevel === 2 /* ansi256 */
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? ansi256(rgbToAnsi256(r, g, b))
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: kolorist(`38;2;${r};${g};${b}`, 0, 3 /* trueColor */);
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};
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export const trueColorBg = (r, g, b) => {
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return options.supportLevel === 2 /* ansi256 */
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? ansi256Bg(rgbToAnsi256(r, g, b))
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: kolorist(`48;2;${r};${g};${b}`, 0, 3 /* trueColor */);
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};
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// Links
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const OSC = '\u001B]';
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const BEL = '\u0007';
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const SEP = ';';
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export function link(text, url) {
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return options.enabled
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? OSC + '8' + SEP + SEP + url + BEL + text + OSC + '8' + SEP + SEP + BEL
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: `${text} (\u200B${url}\u200B)`;
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}
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//# sourceMappingURL=index.js.map |