Difference in basePropertyOf demo vs project

demo.js

function basePropertyOf(e) {
  return function (t) {
    return null == e ? void 0 : e[t]
  }
}
var _basePropertyOf = basePropertyOf,

...

deburrLetter = _basePropertyOf(deburredLetters),

project.js

function basePropertyOf$1(e) {
  return function (t) {
    return null == e ? void 0 : e[t]
  }
}
var _basePropertyOf = basePropertyOf$1,
_basePropertyOf$1 = Object.freeze(Object.assign(Object.create(null), _basePropertyOf, {
  [
    Symbol.toStringTag
  ]: 'Module',
default:
  _basePropertyOf
})),
basePropertyOf = getAugmentedNamespace(_basePropertyOf$1),

...

deburrLetter$1 = basePropertyOf(deburredLetters), // <- THIS IS WHERE THE ERROR HAPPENS