| 1 | let argv = process.argv || [],
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| 2 | env = process.env
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| 3 | let isColorSupported =
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| 4 | !("NO_COLOR" in env || argv.includes("--no-color")) &&
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| 5 | ("FORCE_COLOR" in env ||
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| 6 | argv.includes("--color") ||
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| 7 | process.platform === "win32" ||
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| 8 | (require != null && require("tty").isatty(1) && env.TERM !== "dumb") ||
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| 9 | "CI" in env)
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| 10 |
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| 11 | let formatter =
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| 12 | (open, close, replace = open) =>
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| 13 | input => {
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| 14 | let string = "" + input
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| 15 | let index = string.indexOf(close, open.length)
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| 16 | return ~index
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| 17 | ? open + replaceClose(string, close, replace, index) + close
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| 18 | : open + string + close
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| 19 | }
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| 20 |
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| 21 | let replaceClose = (string, close, replace, index) => {
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| 22 | let result = ""
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| 23 | let cursor = 0
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| 24 | do {
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| 25 | result += string.substring(cursor, index) + replace
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| 26 | cursor = index + close.length
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| 27 | index = string.indexOf(close, cursor)
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| 28 | } while (~index)
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| 29 | return result + string.substring(cursor)
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| 30 | }
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| 31 |
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| 32 | let createColors = (enabled = isColorSupported) => {
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| 33 | let init = enabled ? formatter : () => String
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| 34 | return {
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| 35 | isColorSupported: enabled,
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| 36 | reset: init("\x1b[0m", "\x1b[0m"),
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| 37 | bold: init("\x1b[1m", "\x1b[22m", "\x1b[22m\x1b[1m"),
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| 38 | dim: init("\x1b[2m", "\x1b[22m", "\x1b[22m\x1b[2m"),
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| 39 | italic: init("\x1b[3m", "\x1b[23m"),
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| 40 | underline: init("\x1b[4m", "\x1b[24m"),
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| 41 | inverse: init("\x1b[7m", "\x1b[27m"),
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| 42 | hidden: init("\x1b[8m", "\x1b[28m"),
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| 43 | strikethrough: init("\x1b[9m", "\x1b[29m"),
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| 44 | black: init("\x1b[30m", "\x1b[39m"),
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| 45 | red: init("\x1b[31m", "\x1b[39m"),
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| 46 | green: init("\x1b[32m", "\x1b[39m"),
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| 47 | yellow: init("\x1b[33m", "\x1b[39m"),
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| 48 | blue: init("\x1b[34m", "\x1b[39m"),
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| 49 | magenta: init("\x1b[35m", "\x1b[39m"),
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| 50 | cyan: init("\x1b[36m", "\x1b[39m"),
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| 51 | white: init("\x1b[37m", "\x1b[39m"),
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| 52 | gray: init("\x1b[90m", "\x1b[39m"),
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| 53 | bgBlack: init("\x1b[40m", "\x1b[49m"),
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| 54 | bgRed: init("\x1b[41m", "\x1b[49m"),
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| 55 | bgGreen: init("\x1b[42m", "\x1b[49m"),
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| 56 | bgYellow: init("\x1b[43m", "\x1b[49m"),
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| 57 | bgBlue: init("\x1b[44m", "\x1b[49m"),
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| 58 | bgMagenta: init("\x1b[45m", "\x1b[49m"),
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| 59 | bgCyan: init("\x1b[46m", "\x1b[49m"),
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| 60 | bgWhite: init("\x1b[47m", "\x1b[49m"),
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| 61 | }
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| 62 | }
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| 63 |
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| 64 | module.exports = createColors()
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| 65 | module.exports.createColors = createColors
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