babel --ignore option doesn't work with star at the end of patterns

Bug Report

• I would like to work on a fix!

Current behavior

Running a command such as babel src --out-dir dist --ignore '**/*.test.*' does not exclude files that should match *.test.* (e.g. thing.test.js). It does work when using --ignore '**/*.test.js', but that means each possible extension (e.g. .js, .jsx) has to be ignored individually.

Input Code

$ npx babel --version
7.10.5 (@babel/core 7.11.4)
$ ls src
thing.js  thing.test.js
$ npx babel src --out-dir dist --ignore '**/*.test.js' # works
Successfully compiled 1 file with Babel (230ms).
$ ls dist
thing.js
$ npx babel src --out-dir dist --ignore '**/*.test.*' # does not work
Successfully compiled 2 files with Babel (232ms).
$ ls dist
thing.js  thing.test.js

thing.js and thing.test.js are just empty files.

Expected behavior

* at the end of the glob pattern should work, and files that match should be ignored.

Babel Configuration (babel.config.js, .babelrc, package.json#babel, cli command, .eslintrc)

• No config files, CLI commands are above.

Environment

$ npx envinfo --preset babel
npx: installed 1 in 4.212s

  System:
    OS: Linux 5.8 Arch Linux
  Binaries:
    Node: 14.8.0 - /usr/bin/node
    Yarn: 1.22.4 - /usr/bin/yarn
    npm: 6.14.7 - /usr/bin/npm
  npmPackages:
    @babel/cli: ^7.10.5 => 7.10.5 
    @babel/core: ^7.11.4 => 7.11.4 

[conartist6]

I contend that it is a bug because the behavior is not documented.

[JLHwung]

some.* is never supported to match any extensions. https://github.com/babel/babel/blob/2984f0cb882ea6d51033f37945e47eb2d9eb4760/packages/babel-core/src/config/pattern-to-regex.js#L39

Babel implements a very limited simple pattern that supports only **, * and *.ext. As a workaround, you can specify it multiple times

npx babel src --out-dir dist --ignore '**/*.test.js' --ignore '**/*.test.jsx'

Note that ignore supports RegEx and function, you can also use a function

{
  ignore(filename) {
    return filename.match(/\.test\.jsx?$/)
  }
}

Docs: https://babel.dev/docs/en/options#matchpattern

Feel free to submit a PR if you would like .* be supported.