• 已經嘗試過重新安裝npm,問題一樣'module_not_found'
• 我將路徑改為const wordsLoader = require('./WordsLoader.js').create(filename);
  成功讀到
• 之後出現internal/fs/utils.js:626
  throw new ERR_INVALID_ARG_TYPE(propName, ['string', 'Buffer', 'URL'], path);
  ^

TypeError [ERR_INVALID_ARG_TYPE]: The "path" argument must be of type string or an instance of Buffer or URL. Received undefined

• 是我WordsLoader.js 出問題嗎?
• 這是我WordsLoader.js..

const fs = require('fs');
const EventEmitter = require('events').EventEmitter;


class WordsLoader extends EventEmitter {
    constructor(file){
        super();
        fs.readFile(file, (err,data) => {
            if(err){
                throw err;
            }

            var words = data.toString().split('\n');
            this.emit('data', words);
        });
        }   //constructor

        static create(file){    //static method
            return new WordsLoader(file);
    }
}
        module.exports = WordsLoader;

• 我是想成功讀到2995_words_v3.txt
• 還是可以不用WordsLoader.js也可以讀到2995_words_v3.txt?