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2 years ago
import * as tty from "tty"
const {
env = {},
argv = [],
platform = "",
} = typeof process === "undefined" ? {} : process
const isDisabled = "NO_COLOR" in env || argv.includes("--no-color")
const isForced = "FORCE_COLOR" in env || argv.includes("--color")
const isWindows = platform === "win32"
const isDumbTerminal = env.TERM === "dumb"
const isCompatibleTerminal =
tty && tty.isatty && tty.isatty(1) && env.TERM && !isDumbTerminal
const isCI =
"CI" in env &&
("GITHUB_ACTIONS" in env || "GITLAB_CI" in env || "CIRCLECI" in env)
export const isColorSupported =
!isDisabled &&
(isForced || (isWindows && !isDumbTerminal) || isCompatibleTerminal || isCI)
const replaceClose = (
index,
string,
close,
replace,
head = string.substring(0, index) + replace,
tail = string.substring(index + close.length),
next = tail.indexOf(close)
) => head + (next < 0 ? tail : replaceClose(next, tail, close, replace))
const clearBleed = (index, string, open, close, replace) =>
index < 0
? open + string + close
: open + replaceClose(index, string, close, replace) + close
const filterEmpty =
(open, close, replace = open, at = open.length + 1) =>
(string) =>
string || !(string === "" || string === undefined)
? clearBleed(
("" + string).indexOf(close, at),
string,
open,
close,
replace
)
: ""
const init = (open, close, replace) =>
filterEmpty(`\x1b[${open}m`, `\x1b[${close}m`, replace)
const colors = {
reset: init(0, 0),
bold: init(1, 22, "\x1b[22m\x1b[1m"),
dim: init(2, 22, "\x1b[22m\x1b[2m"),
italic: init(3, 23),
underline: init(4, 24),
inverse: init(7, 27),
hidden: init(8, 28),
strikethrough: init(9, 29),
black: init(30, 39),
red: init(31, 39),
green: init(32, 39),
yellow: init(33, 39),
blue: init(34, 39),
magenta: init(35, 39),
cyan: init(36, 39),
white: init(37, 39),
gray: init(90, 39),
bgBlack: init(40, 49),
bgRed: init(41, 49),
bgGreen: init(42, 49),
bgYellow: init(43, 49),
bgBlue: init(44, 49),
bgMagenta: init(45, 49),
bgCyan: init(46, 49),
bgWhite: init(47, 49),
blackBright: init(90, 39),
redBright: init(91, 39),
greenBright: init(92, 39),
yellowBright: init(93, 39),
blueBright: init(94, 39),
magentaBright: init(95, 39),
cyanBright: init(96, 39),
whiteBright: init(97, 39),
bgBlackBright: init(100, 49),
bgRedBright: init(101, 49),
bgGreenBright: init(102, 49),
bgYellowBright: init(103, 49),
bgBlueBright: init(104, 49),
bgMagentaBright: init(105, 49),
bgCyanBright: init(106, 49),
bgWhiteBright: init(107, 49),
}
export const createColors = ({ useColor = isColorSupported } = {}) =>
useColor
? colors
: Object.keys(colors).reduce(
(colors, key) => ({ ...colors, [key]: String }),
{}
)
export const {
reset,
bold,
dim,
italic,
underline,
inverse,
hidden,
strikethrough,
black,
red,
green,
yellow,
blue,
magenta,
cyan,
white,
gray,
bgBlack,
bgRed,
bgGreen,
bgYellow,
bgBlue,
bgMagenta,
bgCyan,
bgWhite,
blackBright,
redBright,
greenBright,
yellowBright,
blueBright,
magentaBright,
cyanBright,
whiteBright,
bgBlackBright,
bgRedBright,
bgGreenBright,
bgYellowBright,
bgBlueBright,
bgMagentaBright,
bgCyanBright,
bgWhiteBright,
} = createColors()