Output contains ANSI escape code if redirecting output to file

[fangbinwei]

index.js

const highlight = require('cli-highlight').highlight
console.log(highlight('module.exports = {a: 1}', { language: 'js' }))

node index.js > t.js

output is

�[36mmodule�[39m.exports = {�[36ma�[39m: �[32m1�[39m}

It's caused by 7384705 according to vuejs/vue-cli#6084 (comment)

[felixfbecker]

Hmm I see, but this is somewhat intentional. 7384705 aligned the code to the behavior that was always intended, which is the thought that if you use cli-highlight but don't want colored output, why would you use cli-highlight? This way it still works even when you redirect the output e.g. to a pager, to a log file being viewed with a viewer that supports colors, etc. You could for example use cat t.js to view the file with colors.

I see though that there is a use case for non-highlighted direction, so it's probably better to let the user force colors as needed with --color/--no-color and the FORCE_COLOR env var.

[github-actions]

🎉 This issue has been resolved in version 2.1.9 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release
• v2.1.9

Your semantic-release bot 📦🚀

[fangbinwei]

Thanks a lot !!!