With the newest micro, this does nothing

[luminarious]

This is my test index.js:

const {send, json} = require('micro')
const compress = require('micro-compress')

module.exports = compress({threshold: 0}, async (req, res) => {
	const body = `What is Lorem Ipsum?`
	send(res, 200, body)
})

[joakimbeng]

I totally missed this issue...

I've investigated it now using your code and running micro with: DEBUG=* micro which yields the following when doing a request:

micro: Accepting connections on port 3000
  compression undefined not compressible +0ms
  compression no compression: filtered +0ms

And when looking into micro's code, specifically the send function, you can see that the Content-Type header is not set for strings. By changing the body to an object the problem is solved.