- test:
  - and:
    - !!js/regexp /\.(js|jsx|es[0-9]?x?)$/
    - not:
      - !!js/regexp /monaco/
      - !!js/regexp /node_modules|bower_components/
  - and:
    - !!js/regexp /node_modules\/.*.jsx?/
    - or:
      - !!js/regexp /(x|concat|deep|parallel|product|range|spread)-iterable(|-base|-utils)/
      - !!js/regexp /just-try/
      - !!js/regexp /simple-(class|function)-utils/
  loader: babel-loader
- test: /\.(js|jsx|es[0-9]?x?)$/
  exclude: !!js/regexp /node_modules|bower_components/
  use:
    loader: standard-loader
    options:
      error: true
      snazzy: true
      parser: babel-eslint

- test:
  - and:
    - !!js/regexp /\.(js|jsx|es[0-9]?x?)$/
    - not:
      - !!js/regexp /monaco/
      - !!js/regexp /node_modules|bower_components/
  - and:
    - !!js/regexp /node_modules\/.*.jsx?/
    - or:
      - !!js/regexp /\/(x|concat|deep|parallel|product|range|spread)-iterable(|-base|-utils)\//
      - !!js/regexp /\/just-try\//
      - !!js/regexp /\/simple-(class|function)-utils\//
  loader: babel-loader
- test: /\.(js|jsx|es[0-9]?x?)$/
  exclude: !!js/regexp /node_modules|bower_components/
  use:
    loader: standard-loader
    options:
      error: true
      snazzy: true
      parser: babel-eslint

Put regexes in between slashes
Put regexes in between slashes
