Who

Punctuation? Sign! Me! Up! 

What’s that you say?  Question marks and exclamation points aren’t allowed in Javascript variable and function names? 

Whatever, I do what I want:

class Switch {
  get onʔ() { return this.status === 'on' }
  get offʔ() { return this.status === 'off' }
  get disabledʔ() { return this.status === 'disabled' }

  disableǃ() {
    if (this.status !== 'enabled') {
      throw new MustBeEnabledError('no.')
    }
    this.status = 'disabled'
  }

  flipǃ() {
    if (this.disabledʔ) { return }
    this.status = this.onʔ ? 'off' : 'on'
  }
}

Those technically aren’t question marks and exclamation points.  They’re glottal stops and clicks - linguistic characters FTW.  Bonus points for pronunciation.