Detect if Matter.js Body is Circle

I often find myself needing to test if a particular Matter body is a circle or not, as in:

const compounds = Matter.Composite.allBodies(engine.world)
compounds.forEach(compound => compound.parts.forEach(part => {
  const isCircle = ???
  if (isCircle) console.log(part.id, 'is a circle')
  else console.log(part.id, 'is not a circle')
})

I can't find an official way to test if a Matter body was created as a circle. How can I test if a body was created with new Matter.Body.Circle versus another Body constructor?

Via Active questions tagged javascript - Stack Overflow https://ift.tt/fjsQkOt

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