'use strict'; var fs = require('fs'); var client = require('socket.io-client'); if (typeof client.protocol === 'number') { var literal = 'socket.io-client/dist/socket.io.js'; var p = require.resolve(literal, 'may-exclude'); var asset = fs.readFileSync(p, 'utf8'); if (asset.length > 100) { console.log('ok'); } }