israeliId.js

isValidIsraeliId: value => {
  let extrapolationA = 0
  const extrapolationB = parseInt(value.charAt(8), 10)
  for (let i = 0; i < 8; i++) {
    let extrapolatedDigit = (i % 2 + 1) * value.charAt(i)
    if (extrapolatedDigit > 9) {
      const extrapolatedDigitString = extrapolatedDigit.toString()
      extrapolatedDigit = parseInt(extrapolatedDigitString.charAt(0), 10)
      extrapolatedDigit += parseInt(extrapolatedDigitString.charAt(1), 10)
    }
    extrapolationA += extrapolatedDigit
  }
  return (extrapolationA + extrapolationB) % 10 === 0
}