float

Note: It doesn't handle floats with exponent parts.

float parses a float number with an optional minus sign, e.g. 0.25, -7.90, 4.20. Returns a decimal number obtained using parseFloat.

Usage

const Parser = float()

Success

run(Parser).with('-42.0')

{
  isOk: true,
  start: 0,
  end: 5,
  pos: 5,
  value: -42
}

Failure

run(Parser).with('42')

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