Jest: Colorful output in Bash terminal does not work (--colors option)

[wzup]

colors: true doesn't work when provided in jest.config.js.

I use Git Bash on Windows. Jest doesn't color output in my terminal.
I use colors: true in jest.config.js. And it doesn't work.

Colors only works when provided as a command line option

$ npm test -- --colors

Why is it so? I don't want to type anything more than necessary. I want to type npm test and it should work. How to enable this behavior?

BTW, colors: true in package.json doesn't work either.

Unknown option "debug" with value true was found. This is probably a typing mistake. Fixing it will remove this message.

Why so many configs? You have at least three now that do nor work coordinated. How can I use just one simple config file within which I can declare everything needed? I want to declare any configuration just in jest.config.js. No command line options, no package.json options. All in jest.config.js. How can I do it?

And I'm curious.
Why have you made up three different config places with three different sets of config options? Do you provide three different products or just one?

[thymikee]

That's because --colors is kinda special option, which processed by chalk. Read more about it here: https://github.com/chalk/chalk#chalksupportscolor.

Other than that you should be able to set up all config options through a config file (you can use either jest.config.js or jest key in package.json, but not both). If not, please file a proper issue.

[CodeShaun]

I had the same frustration, this solution worked for me:
Add it to your package.json scripts -> test.
"scripts": { "test": "jest --colors" },
Hope that helps.

[remsikr]

Add export FORCE_COLOR=true into your .bash_profile or .bashrc.

[yamsellem]

@remsikr marvelous!
Forcing color option this way seems hacky, don't you think?

(but it works great anyway!)

"scripts": { "test": "FORCE_COLOR=true jest" } seems the simplest way to go.

[anselmobattisti]

If you are using docker-compose the soluction provede by @remsikr works!

[KevinGhadyani-minted]

@yamsellem's solution fixed my issues with Docker-Compose not showing color output.