whole

whole parses a positive whole number without leading zeros, e.g. 0, 7, 420. Returns a decimal number obtained using parseInt with radix of 10.

Usage

const Parser = whole()

Success

run(Parser).with('42')

{
  isOk: true,
  start: 0,
  end: 2,
  pos: 2,
  value: 42
}

Failure

run(Parser).with('x')

{
  isOk: false,
  start: 0,
  end: 0,
  pos: 0,
  expected: 'whole number'
}