如果是针对（少数）特定扩展名的，则可以添加自己的
require.extensions处理程序：
var fs = require('fs');require.extensions['.txt'] = function (module, filename) { module.exports = fs.readFileSync(filename, 'utf8');};var words = require("./words.txt");console.log(typeof words); // string否则，您可以
fs.readFile与
require.resolve：
var fs = require('fs');function readModuleFile(path, callback) { try { var filename = require.resolve(path); fs.readFile(filename, 'utf8', callback); } catch (e) { callback(e); }}readModuleFile('./words.txt', function (err, words) { console.log(words);});
