envNoColor function
Implementation
bool envNoColor(Map<String, String> env) {
if (!env.containsKey('NO_COLOR')) return false;
final raw = env['NO_COLOR'];
// Presence is generally treated as "enabled" for NO_COLOR, but allow explicit
// false-y values to opt back in.
if (raw == null || raw.trim().isEmpty) return true;
return _parseBool(raw);
}