noneOf

noneOf ensures that none of the characters in the given string matches the current character. Characters are compared as whole code points, so surrogate pairs are matched intact. At the end of input it fails with noneOf @ reached the end of input instead of the usual none of: ... message.

Usage

const Parser = noneOf('xyz')

Success

run(Parser).with('q-combinator')

{
  isOk: true,
  start: 0,
  end: 1,
  pos: 1,
  value: 'q'
}

Failure

run(Parser).with('y-combinator')

{
  isOk: false,
  start: 0,
  end: 0,
  pos: 0,
  expected: 'none of: x, y, z'
}