node-colors.js

const color = (() => {
  const RESET = '\x1b[0m'
  const BRIGHT = '\x1b[1m'
  const DIM = '\x1b[2m'
  const RED = '\x1b[31m'
  const GREEN = '\x1b[32m'
  const YELLOW = '\x1b[33m'
  const BLUE = '\x1b[34m'
  const MAGENTA = '\x1b[35m'
  const CYAN = '\x1b[36m'

  let colorCode = (code, msg) => `${code}${msg}${RESET}`
  let colorFn = code => (msg => colorCode(code, msg))

  let colors = {
    bright: colorFn(BRIGHT),
    dim: colorFn(DIM),
    red: colorFn(RED),
    green: colorFn(GREEN),
    yellow: colorFn(YELLOW),
    blue: colorFn(BLUE),
    magenta: colorFn(MAGENTA),
    cyan: colorFn(CYAN),
  }

  let brighten = colorFn => (msg => `${BRIGHT}${colorFn(msg)}`)
  let dimmer = colorFn => (msg => `${DIM}${colorFn(msg)}`)

  let colorKeys = Object.keys(colors)
  colors.bright = {}
  colors.dim = {}
  colorKeys.forEach(color => {
    colors.bright[color] = brighten(colors[color])
    colors.dim[color] = dimmer(colors[color])
  })

  return colors
})()