flynt install fails if it a TTY is not allocated

[rodrigoaguilera]

First of all. Great project and thanks for contributing it to the community :)

I have been trying to setup a gitlab CI pipeline that builds a flynt project and I after many hours of hitting my head against cryptic errors I realized that TTY needs to be allocated for flynt-cli to work properly.

In my local terminal everything runs alright but when I try to run a flynt install the CI will fail as soon as it tries to print updates to the process to the terminal output
An example:

▶ Saving config...                                                                                                                                                          
✔ Saving config...                                                                                                                                                          
▶ Installing node dependencies...  
 [Installs yarn dependencies]
Done in 19.34s.                                                                                                                                                             
                                                                                                                                                                            

but when it needs to output "✔ Installing node dependencies... " the build fails. (the terminal without tty won't actually output those 3 first lines but I explain it like this to illustrate the flow)

I can reproduce this locally by running:

docker run --rm netzstrategen/wp-flynt sh -c "flynt install"

while running:

docker run -it --rm netzstrategen/wp-flynt sh -c "flynt install"

runs successfully. Notice the -it

I think it may be caused by some package like ora
https://www.npmjs.com/package/ora

Quoting the readme

isEnabled

Type: boolean

Force enable/disable the spinner. If not specified, the spinner will be enabled if the stream is being run inside a TTY context (not spawned or piped) and/or not in a CI environment.

Maybe flynt should detect if it is running inside a TTY and adjust properly.

Can you give more hints about what is happening?