v4: stats colors not enabled by default

[lucalooz]

Describe the bug

I have just upgraded from v3.3.12 to v4.0.0 and I don't see a colored output on the terminal as before.

What is the current behavior?

Webpack works fine but I don't have colored output.

To Reproduce

Upgrade to v4.0.0.

Expected behavior

Colored output as on v3.3.12.

  System:
    OS: macOS 10.15.7
    CPU: (16) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
    Memory: 471.39 MB / 16.00 GB
  Binaries:
    Node: 14.13.0 - ~/.nvm/versions/node/v14.13.0/bin/node
    Yarn: 2.3.2 - ~/.nvm/versions/node/v14.13.0/bin/yarn
    npm: 6.14.8 - ~/.nvm/versions/node/v14.13.0/bin/npm
  Browsers:
    Chrome: 85.0.4183.121
    Firefox: 81.0
    Safari: 14.0
  Packages:
    fork-ts-checker-webpack-plugin: ^5.2.0 => 5.2.0 
    webpack: 5.0.0-rc.6 => 5.0.0-rc.6 
    webpack-cli: 4.0.0 => 4.0.0 

Additional context

I have tried to:

• downgrade to v3.3.12 -> WORKS
• downgrade webpack from v5 to v4 while keeping cli at v4 -> DOESN'T WORK

[lucalooz]

It seems that's just a different default configuration of the stats portion passed down to webpack.

On v3.x.x I see that if there isn't a a chosen preference then it's automatically enabled if the terminal supports a colored output.

webpack-cli/bin/cli.js

Line 169 in 33574ec

if (typeof outputOptions.colors === "undefined") outputOptions.colors = require("supports-color").stdout;

webpack-cli/bin/config/config-yargs.js

Line 379 in 33574ec

return require("supports-color").stdout;

[alexander-akait]

We should fix it, because wepack don’t know noting about env, it can be cli and node or browser, or something else

[alexander-akait]

/cc @webpack/cli-team because it is regression we should fix it asap

[alexander-akait]

WIP