parser.js

function prepareWordListWithSuggestions(phrase = '', suggestions = []) {
  const result = [];
  let phraseAux = phrase;
  let phrasePointer = 0;
  suggestions.forEach((suggestion) => {
    const start = suggestion.start - phrasePointer;
    const end = suggestion.offset - phrasePointer;
    const firstPart = phraseAux.slice(0, start);
    if (firstPart !== '') {
      result.push({ phrase: firstPart });
    }
    result.push({
      phrase: phraseAux.substr(start, suggestion.offset),
      suggestions: suggestion.recommends,
    });
    phraseAux = phraseAux.slice(end);
    phrasePointer += end;
  });
  if (phraseAux !== '') {
    result.push({ phrase: phraseAux });
  }
  return result;
}

function removeFromListWithSuggestions(listWithSuggestions = [], phrase = '', suggestion = '') {
  const index = listWithSuggestions.findIndex(text => text.phrase === phrase);
  const result = listWithSuggestions.slice();
  if (index >= 0) {
        result.splice(index, 1, { phrase: phrase });
  }
  return result;
}