compromise/src/term/noun/inflect/data/pluralRules.js

natural language processing in the browser

//patterns for turning 'bus' to 'buses'
module.exports = [
  [/(ax|test)is$/i, '$1es'],
  [/(octop|vir|radi|nucle|fung|cact|stimul)us$/i, '$1i'],
  [/(octop|vir)i$/i, '$1i'],
  [/(kn|l|w)ife$/i, '$1ives'],
  [/^((?:ca|e|ha|(?:our|them|your)?se|she|wo)l|lea|loa|shea|thie)f$/i, '$1ves'],
  [/^(dwar|handkerchie|hoo|scar|whar)f$/i, '$1ves'],
  [/(alias|status)$/i, '$1es'],
  [/(bu)s$/i, '$1ses'],
  [/(al|ad|at|er|et|ed|ad)o$/i, '$1oes'],
  [/([ti])um$/i, '$1a'],
  [/([ti])a$/i, '$1a'],
  [/sis$/i, 'ses'],
  [/(hive)$/i, '$1s'],
  [/([^aeiouy]|qu)y$/i, '$1ies'],
  [/(x|ch|ss|sh|s|z)$/i, '$1es'],
  [/(matr|vert|ind|cort)(ix|ex)$/i, '$1ices'],
  [/([m|l])ouse$/i, '$1ice'],
  [/([m|l])ice$/i, '$1ice'],
  [/^(ox)$/i, '$1en'],
  [/^(oxen)$/i, '$1'],
  [/(quiz)$/i, '$1zes'],
  [/(antenn|formul|nebul|vertebr|vit)a$/i, '$1ae'],
  [/(sis)$/i, 'ses'],
  [/^(?!talis|.*hu)(.*)man$/i, '$1men'],
  [/(.*)/i, '$1s']
].map(function(a) {
  return {
    reg: a[0],
    repl: a[1]
  };
});