Word forms provider Leave feedback

const wordFormsProvider = java.newProxy('com.groupdocs.search.dictionaries.IWordFormsProvider', {
  getWordForms: function (word) {
    const result = [];

    // Assume that the input word is in the plural, then we add the singular
    if (word.length > 2 && word.toLowerCase().endsWith('es')) {
      result.push(word.substr(0, word.length - 2));
    }
    if (word.length > 1 && word.toLowerCase().endsWith('s')) {
      result.push(word.substr(0, word.length - 1));
    }

    // Then assume that the input word is in the singular, we add the plural
    if (word.length > 1 && word.toLowerCase().endsWith('y')) {
      result.push(word.substr(0, word.length - 1) + 'is');
    }
    result.push(word + 's');
    result.push(word + 'es');
    // All rules are implemented in the EnglishWordFormsProvider class

    return java.newArray('java.lang.String', result);
  },
});

const indexFolder = 'c:/MyIndex/';
const documentsFolder = 'c:/MyDocuments/';

// Creating an index in the specified folder
const index = new groupdocs.search.Index(indexFolder, true);

// Subscribing to the event
index.getEvents().ErrorOccurred.add(
  java.newProxy('com.groupdocs.search.events.EventHandler', {
    invoke: function (sender, args) {
      console.log(args.getMessage());
    },
  }),
);

// Indexing documents from the specified folder
index.add(documentsFolder);

String.prototype.endsWith = function (str) {
  var lastIndex = this.lastIndexOf(str);
  return lastIndex !== -1 && lastIndex + str.length === this.length;
};

// Setting the custom word forms provider instance
const wordFormsProvider = ... // See code example above
index.getDictionaries().setWordFormsProvider(wordFormsProvider);

// Creating a search options instance
const options = new groupdocs.search.SearchOptions();
options.setUseWordFormsSearch(true); // Enabling search for word forms

// Searching in the index
const query = 'mrs';
const result = index.search(query, options);

// The following words can be found:
// mrs
// mr