enum stepValue {
  "A" = 1,
  "B" = 3,
  "C" = -8,
  "D" = -6,
  "E" = -4,
  "F" = -3,
  "G" = -1,
}

export class TheoryPitch {
  public static calculatePitch(step_: string | null, pitchOctave_: number | null, alter_: number) {
    if (step_ === null || pitchOctave_ === null) {
      return 0;
    } else {
      return 20 + 12 * pitchOctave_ + stepValue[step_] + alter_;
    }
  }
}