Function unexpected

MathBox/mathbox-bundle.js:80099–80105

(str)

  // utils ----------------------------

  function unexpected(str) {
    errored = true
    stream.emit('error', new Error(
      (str || 'unexpected '+state) +
      ' at line '+state[0].token.line
    ))
  }

  function assert(type, data) {
    return 1,