const src = `
  const { mult, round } = api

  const radius = 12

  const s = round(mult(mult(2, PI), radius))

  s
`

const script = createScript('myScript', src, {
  context: {
    api: {
      mult: (a, b) => a * b,
      round: Math.round
    },
    PI: Math.PI
  }
})

console.log(script.exports) // 75