iterative/vscode-dvc

const validateNumericInteger = (number: number): number | undefined =>
  !Number.isNaN(number) && Number.isInteger(number) ? number : undefined

export const formatNumber = (value: number): string => {
  const defaultPrecision = 8 // for when we can't calculate real precision yet
  const automatic = value.toString()
  if (automatic.length > 10) {
    return value.toPrecision(defaultPrecision)
  }
  return automatic
}

export const isValidStringInteger = (
  input: string | undefined | null
): input is string =>
  !!input && Number.parseInt(input) === Number.parseFloat(input)

export const createValidInteger = (
  input: string | number | undefined | null
): number | undefined => {
  if (typeof input === 'number') {
    return validateNumericInteger(input)
  }

  return isValidStringInteger(input) ? Number.parseInt(input) : undefined
}