It appears [21m and [22m are completely absent from the list of supported render mode escapes in the new VT-like functionality Windows supports.

You have [24m and [27m, but no way to reset bold at all. This needs to be fixed because it's breaking a ton of people trying to run Node.js without LibUV's Windows TTY fallback, and I'm sure it'll break a much larger crowd as adoption rises.

Ref chalk/chalk#145 // cc @sindresorhus