@livre/word-count/dist/index.js

Word count

import { WORD, NUM } from '@livre/enum-regexes';
import { frequentWords } from '@livre/frequent-words';

const WordCount = ({ excludes, top }) => wordCount.bind({ excludes, top });

const wordCount = function (contents) {
  const excludes = this?.excludes ?? frequentWords;
  const top = this?.top;
  const counter = {};
  let ms, wd;
  while ((ms = WORD.exec(contents)) && ([wd] = ms)) {
    if (excludes.includes(wd = wd.toLowerCase())) { continue }
    if (NUM.test(wd)) { continue }
    if (wd in counter) { counter[wd]++; } else { counter[wd] = 1; }
  }
  const entries = Object.entries(counter).sort(([, a], [, b]) => b - a);
  return top ? entries.slice(0, top) : entries
};

export { WordCount, wordCount };