Warning, the following targets are using a decimal version:

  node: 7.4

We recommend using a string for minor/patch versions to avoid numbers like 6.10
getting parsed as 6.1, which can lead to unexpected behavior.

babel-preset-env: `DEBUG` option

Using targets:
{
  "firefox": "52",
  "node": "7.4"
}

Modules transform: commonjs

Using plugins:
  transform-es2015-destructuring {"firefox":"52"}
  transform-es2015-for-of {"firefox":"52"}
  transform-es2015-function-name {"firefox":"52"}
  transform-es2015-literals {"firefox":"52"}
  syntax-trailing-function-commas {"node":"7.4"}
src/in.js -> lib/in.js