module SimpleCov::Color

def colorize(text, color, enabled: enabled?)

override the auto-detection without touching env vars.
keyword lets callers (e.g., CLI subcommands honoring `--no-color`)
Returns the bare text if color is disabled. The `enabled:`
Wrap `text` in the ANSI sequence for `color` (a key of ANSI). 
def colorize(text, color, enabled: enabled?)
  return text unless enabled
  "#{ANSI.fetch(color)}#{text}#{ANSI.fetch(:reset)}"
end

def colorize_percent(percent, text = nil, enabled: enabled?)

rendering of the number can pass the pre-rendered `text`.
threshold band it falls into. Callers that want a different
Render `percent` as a fixed "NN.NN%" string colored by which 
def colorize_percent(percent, text = nil, enabled: enabled?)
  colorize(text || format("%.2f%%", percent), for_percent(percent), enabled: enabled)
end

def enabled?(stream = $stderr)

precedence.
doesn't get ANSI sequences. See the module-level comment for
that print to stdout should pass `$stdout` so a redirected pipe
formatter writes to stderr, so that's the default. CLI subcommands
`stream` is the IO that the colorized text is destined for. The 
def enabled?(stream = $stderr)
  # `SimpleCov.color` only exists once the full library is loaded.
  # The standalone CLI (`exe/simplecov`) loads `simplecov/color`
  # without `simplecov` itself to stay lightweight, so treat a
  # missing config the same as its `:auto` default: fall through to
  # the env vars and tty check below.
  config = SimpleCov.color if SimpleCov.respond_to?(:color)
  return config if [true, false].include?(config)
  return false if env_set?("NO_COLOR")
  return true  if env_set?("FORCE_COLOR")
  stream.tty?
end

def env_set?(name) 

def env_set?(name)
  value = ENV.fetch(name, nil)
  value && !value.empty?
end

def for_percent(percent) 

def for_percent(percent)
  return :green  if percent >= GREEN_THRESHOLD
  return :yellow if percent >= YELLOW_THRESHOLD
  :red
end