feat: allow config transpiling (babel, typescript, etc)

[shellscape]

This PR contains:

• bugfix
• feature
• refactor
• tests
• documentation
• metadata

Breaking Changes?

• yes
• no

If yes, please describe the breakage.

Please Describe Your Changes

Fixes #5. Introduces support for transpiling webpack configs on the fly. This allows users to use babel (webpack.config.babel.js, webpack.config.es6), typescript (webpack.config.ts), and other module loaders to write their webpack configs. Users are responsible for installing the necessary dependency(s) for the module loader that matches their file type.

This is the full list of file extensions supported, along with the loaders looked for when using a file type in this list:

  '.babel.js': ['@babel/register', 'babel-register', 'babel-core/register', 'babel/register'],
  '.babel.ts': ['@babel/register'],
  '.es6': ['@babel/register'],
  '.mjs': ['@babel/register'],
  '.ts': [
    'ts-node/register',
    'typescript-node/register',
    'typescript-register',
    'typescript-require'
  ]

If a config file type is used which is not in that list, the Node require pipeline will attempt to load the file. If a module loader is not installed for a special file type, webpack-nano will throw an error.

[shellscape]

ping @j-walker23. this should suit your needs.

[j-walker23]

@shellscape you are the man. Thank you!