picocolors.js
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let tty = require("tty")
let isColorSupported =
!("NO_COLOR" in process.env || process.argv.includes("--no-color")) &&
("FORCE_COLOR" in process.env ||
process.argv.includes("--color") ||
process.platform === "win32" ||
(tty.isatty(1) && process.env.TERM !== "dumb") ||
"CI" in process.env)
let formatter =
(open, close, replace = open) =>
input => {
let string = "" + input
let index = string.indexOf(close, open.length)
return ~index
? open + replaceClose(string, close, replace, index) + close
: open + string + close
}
let replaceClose = (string, close, replace, index) => {
let start = string.substring(0, index) + replace
let end = string.substring(index + close.length)
let nextIndex = end.indexOf(close)
return ~nextIndex ? start + replaceClose(end, close, replace, nextIndex) : start + end
}
let createColors = (enabled = isColorSupported) => ({
isColorSupported: enabled,
reset: enabled ? s => `\x1b[0m${s}\x1b[0m` : String,
bold: enabled ? formatter("\x1b[1m", "\x1b[22m", "\x1b[22m\x1b[1m") : String,
dim: enabled ? formatter("\x1b[2m", "\x1b[22m", "\x1b[22m\x1b[2m") : String,
italic: enabled ? formatter("\x1b[3m", "\x1b[23m") : String,
underline: enabled ? formatter("\x1b[4m", "\x1b[24m") : String,
inverse: enabled ? formatter("\x1b[7m", "\x1b[27m") : String,
hidden: enabled ? formatter("\x1b[8m", "\x1b[28m") : String,
strikethrough: enabled ? formatter("\x1b[9m", "\x1b[29m") : String,
black: enabled ? formatter("\x1b[30m", "\x1b[39m") : String,
red: enabled ? formatter("\x1b[31m", "\x1b[39m") : String,
green: enabled ? formatter("\x1b[32m", "\x1b[39m") : String,
yellow: enabled ? formatter("\x1b[33m", "\x1b[39m") : String,
blue: enabled ? formatter("\x1b[34m", "\x1b[39m") : String,
magenta: enabled ? formatter("\x1b[35m", "\x1b[39m") : String,
cyan: enabled ? formatter("\x1b[36m", "\x1b[39m") : String,
white: enabled ? formatter("\x1b[37m", "\x1b[39m") : String,
gray: enabled ? formatter("\x1b[90m", "\x1b[39m") : String,
bgBlack: enabled ? formatter("\x1b[40m", "\x1b[49m") : String,
bgRed: enabled ? formatter("\x1b[41m", "\x1b[49m") : String,
bgGreen: enabled ? formatter("\x1b[42m", "\x1b[49m") : String,
bgYellow: enabled ? formatter("\x1b[43m", "\x1b[49m") : String,
bgBlue: enabled ? formatter("\x1b[44m", "\x1b[49m") : String,
bgMagenta: enabled ? formatter("\x1b[45m", "\x1b[49m") : String,
bgCyan: enabled ? formatter("\x1b[46m", "\x1b[49m") : String,
bgWhite: enabled ? formatter("\x1b[47m", "\x1b[49m") : String,
})
module.exports = createColors()
module.exports.createColors = createColors