Words count for multi-languages paragraph mixed with numbers and punctuation.
One rule apply to all.

See Test Case

npm i words-count

import wordsCount from 'words-count';
// const wordsCount = require('words-count').default;  

console.log(wordsCount('Hello World'));  

words_to_be_count = 'Hello “世界”';
words-count.js -> 3

words_to_be_count.length -> 10
words_to_be_count.split(' ').length -> 2
Countable.js -> 2
PHP str_word_count(words_to_be_count) -> 1
PHP mb_strlen(words_to_be_count) -> 10
Office Word -> 5

Numbers count as 1 word

const words = "Some words ...";

// Treat punctuation as word breaker
const total = wordsCount(words, {    
  punctuationAsBreaker: true
});

// Treat more characters as punctuation
const total = wordsCount(words, {    
  punctuation: ['-', 'a', 'b']
});

// Disable default built-in punctuation list
const total = wordsCount(words, {    
  disableDefaultPunctuation: true
});

const words = "Some words ...";
const { wordsSplit, wordsDetect } = require('words-count');  

const splittedWords = wordsSplit(words);
const { words, count } = wordsDetect(words);

Test cases are based on best assumption.
Original Content:
Google's free service instantly translates words, phrases, and web pages between English and over 100 other languages.
Basic Test Content:
Translate original content into target language by Google Translate.
Test Case Coverage:
English, Chinese, Chinese-Traditional, Japanese, Korean, French, German,
Italian, Spanish, Portuguese, Russian, Ukrainian, Arabic, Hebrew, Afrikaans,
Albanian, Amharic, Armenian, Azerbaijani, Basque, Belarusian, Bengali,
Bulgarian, Bosnian, Catalan, Cebuano, Croatian, Chichewa, Corsican, Czech,
Danish, Dutch, Esperanto, Estonian, Filipino, Finnish, Frisian, Greek, Galician,
Georgian, Gujarati, Haitian Creole, Hausa, Hindi, Hmong, Hungarian, Icelandic,
Igbo, Indonesian, Irish, Javanese, Kannada, Kazakh, Kurdish, Kyrgyz, Latin,
Latvian, Lithuanian, Luxembourgish, Macedonian, Malagasy, Malay, Malayalam,
Nepali, Norwegian, Polish, Romanian, Serbian, Slovenian, Swedish, Turkish, Welsh
Zulu, Maori, Marathi, Mongolian, Pashto, Persian, Punjabi, Scots Gaelic, Sesotho,
Shona, Sindhi, Sinhala, Slovak, Somali, Sundanese, Swahili, Tajik, Turkish,
Urdu, uzbek, Vietnamese, Xhosa, Yiddish, Yoruba
Failed/Unknown: Hawalian, Khmer, Lao, Maltese, Myanmar, Tamil, Thai

http://php.net/manual/en/function.str-word-count.php#109733
https://www.key-shortcut.com/en/writing-systems/%E6%96%87%E5%AD%97-chinese-cjk/cjk-characters-1/ http://jrgraphix.net/r/Unicode/0D00-0D7F