fix the error of missing res.end function #69
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"koa": "^2.5.3",
"webpack-hot-middleware": "^2.25.0",
There is a function call res.end() at line 105 in in webpack-hot-middleware/middleware.js

req.on('close', function() { if (!res.finished) res.end(); delete clients[id]; });
So the error occurs as below