picocolors.ts

// ISC License

// Copyright (c) 2021 Alexey Raspopov, Kostiantyn Denysov, Anton Verinov

// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.

// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
//
// https://github.com/alexeyraspopov/picocolors/blob/b6261487e7b81aaab2440e397a356732cad9e342/picocolors.js#L1

const { env, stdout } = globalThis?.process ?? {}

const enabled =
  env &&
  !env.NO_COLOR &&
  (env.FORCE_COLOR || (stdout?.isTTY && !env.CI && env.TERM !== 'dumb'))

const replaceClose = (
  str: string,
  close: string,
  replace: string,
  index: number
): string => {
  const start = str.substring(0, index) + replace
  const end = str.substring(index + close.length)
  const nextIndex = end.indexOf(close)
  return ~nextIndex
    ? start + replaceClose(end, close, replace, nextIndex)
    : start + end
}

const formatter = (open: string, close: string, replace = open) => {
  if (!enabled) return String
  return (input: string) => {
    const string = '' + input
    const index = string.indexOf(close, open.length)
    return ~index
      ? open + replaceClose(string, close, replace, index) + close
      : open + string + close
  }
}

export const reset = enabled ? (s: string) => `\x1b[0m${s}\x1b[0m` : String
export const bold = formatter('\x1b[1m', '\x1b[22m', '\x1b[22m\x1b[1m')
export const dim = formatter('\x1b[2m', '\x1b[22m', '\x1b[22m\x1b[2m')
export const italic = formatter('\x1b[3m', '\x1b[23m')
export const underline = formatter('\x1b[4m', '\x1b[24m')
export const inverse = formatter('\x1b[7m', '\x1b[27m')
export const hidden = formatter('\x1b[8m', '\x1b[28m')
export const strikethrough = formatter('\x1b[9m', '\x1b[29m')
export const black = formatter('\x1b[30m', '\x1b[39m')
export const red = formatter('\x1b[31m', '\x1b[39m')
export const green = formatter('\x1b[32m', '\x1b[39m')
export const yellow = formatter('\x1b[33m', '\x1b[39m')
export const blue = formatter('\x1b[34m', '\x1b[39m')
export const magenta = formatter('\x1b[35m', '\x1b[39m')
export const purple = formatter('\x1b[38;2;173;127;168m', '\x1b[39m')
export const cyan = formatter('\x1b[36m', '\x1b[39m')
export const white = formatter('\x1b[37m', '\x1b[39m')
export const gray = formatter('\x1b[90m', '\x1b[39m')
export const bgBlack = formatter('\x1b[40m', '\x1b[49m')
export const bgRed = formatter('\x1b[41m', '\x1b[49m')
export const bgGreen = formatter('\x1b[42m', '\x1b[49m')
export const bgYellow = formatter('\x1b[43m', '\x1b[49m')
export const bgBlue = formatter('\x1b[44m', '\x1b[49m')
export const bgMagenta = formatter('\x1b[45m', '\x1b[49m')
export const bgCyan = formatter('\x1b[46m', '\x1b[49m')
export const bgWhite = formatter('\x1b[47m', '\x1b[49m')