chokes with .babelrc files

[stephenmathieson]

.babelrc

{
  "presets": [ "es2015", "react" ],
  "plugins": [
    [
      "transform-react-jsx", {
        "pragma": "element"
      }
    ]
  ]
}

output:

~/dev/src/github.com/segmentio/icons on master [!] ∴ ./node_modules/.bin/duo --use ./preview/duo-plugins.js index.js 

        using : babel
     building : index.js
        using : compatibility
        using : stoj
        error : Error: [BABEL] /Users/stephenmathieson/dev/src/github.com/segmentio/icons/index.js: Unknown option: /Users/stephenmathieson/dev/src/github.com/segmentio/icons/.babelrc.presets
    at Ware.babel (/Users/stephenmathieson/dev/src/github.com/segmentio/icons/node_modules/duo-babel/index.js:78:13)
    at Ware.<anonymous> (/Users/stephenmathieson/dev/src/github.com/segmentio/icons/node_modules/duo/node_modules/ware/node_modules/wrap-fn/index.js:75:16)
    at Ware.<anonymous> (/Users/stephenmathieson/dev/src/github.com/segmentio/icons/node_modules/duo/node_modules/ware/node_modules/wrap-fn/index.js:57:27)
    at next (/Users/stephenmathieson/dev/src/github.com/segmentio/icons/node_modules/duo/node_modules/ware/lib/index.js:85:20)
    at Ware.run (/Users/stephenmathieson/dev/src/github.com/segmentio/icons/node_modules/duo/node_modules/ware/lib/index.js:88:3)
    at Duo.<anonymous> (/Users/stephenmathieson/dev/src/github.com/segmentio/icons/node_modules/duo/node_modules/thunkify/index.js:43:12)
    at Duo.next (/Users/stephenmathieson/dev/src/github.com/segmentio/icons/node_modules/duo/node_modules/co/index.js:90:21)
    at /Users/stephenmathieson/dev/src/github.com/segmentio/icons/node_modules/duo/node_modules/co/index.js:93:18
    at /Users/stephenmathieson/dev/src/github.com/segmentio/icons/node_modules/duo/node_modules/co-fs/node_modules/thunkify/index.js:28:12
    at FSReqWrap.readFileAfterClose [as oncomplete] (fs.js:380:3)

but:

 ~/dev/src/github.com/segmentio/icons on master [!] ∴ rm .babelrc 

 ~/dev/src/github.com/segmentio/icons on master [!] ∴ ./node_modules/.bin/duo --use ./preview/duo-plugins.js index.js 

        using : babel
     building : index.js
        using : compatibility
        using : stoj
        built : index.js
        wrote : index.js

 ~/dev/src/github.com/segmentio/icons on master [!] ∴