Weather converter °C/°F conversion

I wanted to share a semi-useful script, primarily if you work between the states and other countries.

Here I wanted to create a simple script that will run both in the CLI/UI. You enter weather in formats like 30c or 90f, which will convert it the other way.

Also, from the UI, it's real-time. So you will get the result while typing.

The output can improve (especially the error state). I might do it later.

// Menu: Weather Degree Converter
// Author: Nadeem Khedr
// Twitter: @nadeemkhedr

let convertToF = (c) => {
  return (c * 9) / 5 + 32
}

const convertToC = (f) => {
  return ((f - 32) * 5) / 9
}

const getDegreeWithType = (input) => {
  const matchRegex = /(\d+)(f|c)/i
  const result = matchRegex.exec(input)
  if (!result) {
    return null
  }
  return {
    degree: parseInt(result[1], 10),
    type: result[2].toLowerCase(),
  }
}

const degreeConverter = (input) => {
  const degreeResult = getDegreeWithType(input)
  if (!degreeResult) {
    return "You need to enter the unit in this format '30c' or '90f'"
  }

  const { degree, type } = degreeResult
  let oDegree = null
  let oType = null
  if (type === 'c') {
    oDegree = convertToF(degree)
    oType = 'F'
  } else {
    oDegree = convertToC(degree)
    oType = 'C'
  }
  return `${oDegree.toFixed(1)}°${oType}`
}

const deg = await arg(
  'Enter degress in °C or °F',
  (input) =>
    `<div class="text-2xl flex justify-center items-center p-5">
${input ? degreeConverter(input) : `Waiting for input`}
</div>`
)

div(degreeConverter(deg))