Nodejs String Pluralize pluralize()

Method Source Code

// Credit to: http://www.sitekickr.com/coda/javascript/make-word-pluralize
String.prototype.pluralize = function () {
   if (this.lastChar() === 'y') {
      if ((this.charAt(this.length - 2)).isVowel()) {
         // If the y has a vowel before it (i.e. toys), then you just add the s.
         return this + 's';
      }/*  w w w  .  j  ava2  s  .  c om*/
      else {
         // If a this ends in y with a consonant before it (fly), you drop the y and add -ies to make it pluralize.
         return this.slice(0, -1) + 'ies';
      }
   }
   else if (this.substring(this.length - 2) === 'us') {
      // ends in us -> i, needs to preceed the generic 's' rule
      return this.slice(0, -2) + 'i';
   }
   else if (
      [
         'ch',
         'sh'
      ].indexOf(this.substring(this.length - 2)) !== -1 ||
         [
            'x',
            's'
         ].indexOf(this.lastChar()) !== -1) {
      // If a this ends in ch, sh, x, s, you add -es to make it pluralize.
      return this + 'es';
   }
   else {
      // anything else, just add s
      return this + 's';
   }
};

Related

1. plural()

   String.prototype.plural = function() {
     var s = this.trim().toLowerCase();
     end = s.substr(-1);
     if(end == 'y') {
       var vowels = ['a', 'e', 'i', 'o', 'u'];
       s = s.substr(-2, 1) in vowels ? s + 's' : s.substr(0, s.length-1) + 'ies';
     } else if(end == 'h') {
         s += s.substr(-2) == 'ch' || s.substr(-2) == 'sh' ? 'es' : 's';
     } else if(end == 's') {
   ...
   

2. pluralize()

   String.prototype.pluralize = function () {
     return inflector.pluralize(this);
   };
   

3. pluralize()

   String.prototype.pluralize = function() {
     const plurals = {
       person: "people",
       Person: "People"
     };
     if (plurals.hasOwnProperty(this)) {
       return plurals[this];
     return `${this}s`;
   ...
   

4. pluralize()

   String.prototype.pluralize = function () {
       return Inflector.applyRules(this, Inflector.pluralRules);
   };
   

5. pluralize(count)

   String.prototype.pluralize = function(count){
     return (count == 1 ? 'book' : 'books');
   

6. pluralize(count)

   String.prototype.pluralize = function (count) {
       var plural = 's';
       if (count == 1) plural = '';
       return this + plural;
   };
   

7. pluralize(count)

   String.prototype.pluralize = function(count) {
     if (count === 1) {
       return this;
     } else {
       return this + "s";
   };
   function calculateMonths(fromDate, toDate) {
     var fromDateObject = new Date(fromDate),
   ...