Function headAmpFeatureOf

headAmpFeatureOf(
    feature:
        | "fader"
        | "gain"
        | "pan"
        | "trim"
        | "phantom"
        | "polarity"
        | "name"
        | "comp"
        | "eq"
        | "gate"
        | "width"
        | "mute"
        | "pad"
        | "solo"
        | "inserts"
        | "meter"
        | "sens",
): HeadAmpFeature
| undefined
Is this capability word one the patched INPUT declares, rather than one the desk's own DSP carries?

A NARROWING, not a set membership test: the answer is typed as one of the capability's own keys, so a caller reads capability[feature] without a cast. Asking a Set<ChannelFeature> and reading the answer back as a HeadAmpFeature compiles happily the moment the capability grows a non-boolean field — which is why the software adapter's own copy of this narrowing was written this way, and why there is now one of it instead of two.
Parameters
- feature:
      | "fader"
      | "gain"
      | "pan"
      | "trim"
      | "phantom"
      | "polarity"
      | "name"
      | "comp"
      | "eq"
      | "gate"
      | "width"
      | "mute"
      | "pad"
      | "solo"
      | "inserts"
      | "meter"
      | "sens"
Returns HeadAmpFeature | undefined