[repl] CSS files not encoded to utf8

[hasdfa]

🐛 bug report

When using css files in REPL it shows as array of numbers (Buffer) which is not encoded to urf8

🎛 Configuration (.babelrc, package.json, cli command)

🤔 Expected Behavior

It should be a string

'.MZ3kha_test {\n  color: #fff;\n}\n'

😯 Current Behavior

It is an array of numbers

46,77,90,51,107,104,97,95,116,101,115,116,32,123,10,32,32,99,111,108,111,114,58,32,35,102,102,102,59,10,125,10

💁 Possible Solution

Buffer.from(TEXT.split(',').map(Number)).toString('utf-8')

🔦 Context

No specific context

💻 Code Sample

https://repl.parceljs.org/#...

🌍 Your Environment

Based on commit [d19b1f6bdb](https://github.com/parcel-bundler/parcel/commits/d19b1f6bdb05eb5a3085f44daae15c0fe2709ab9)