react-transform-hmr is referenced in lib files

[n1k0]

This prevents dependant packages to use the lib with an error like this:

> [email protected] test /home/niko/work/kinto-admin
> NODE_ENV=test mocha --compilers js:babel/register --recursive --require ./test/setup-jsdom.js $(find test -name '*_test.js')

/home/niko/work/kinto-admin/node_modules/react-transform-hmr/lib/index.js:51
    throw new Error('locals[0] does not appear to be a `module` object with Hot Module ' + 'replacement API enabled. You should disable react-transform-hmr in ' + 'production by using `env` section in Babel configuration. See the ' + 'example in README: https://github.com/gaearon/react-transform-hmr');
    ^

Error: locals[0] does not appear to be a `module` object with Hot Module replacement API enabled. You should disable react-transform-hmr in production by using `env` section in Babel configuration. See the example in README: https://github.com/gaearon/react-transform-hmr
    at proxyReactComponents (/home/niko/work/kinto-admin/node_modules/react-transform-hmr/lib/index.js:51:11)
    at Object.<anonymous> (/home/niko/work/kinto-admin/node_modules/react-jsonschema-form/lib/components/fields/ArrayField.js:39:59)
    at Module._compile (module.js:435:26)
    at Module._extensions..js (module.js:442:10)
    at Object.require.extensions.(anonymous function) [as .js] (/home/niko/work/kinto-admin/node_modules/babel/node_modules/babel-core/lib/api/register/node.js:214:7)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:311:12)
    at Module.require (module.js:366:17)
    at require (module.js:385:17)
    at Object.<anonymous> (/home/niko/work/kinto-admin/node_modules/react-jsonschema-form/lib/components/fields/SchemaField.js:13:19)
    at Module._compile (module.js:435:26)
    at Module._extensions..js (module.js:442:10)
    at Object.require.extensions.(anonymous function) [as .js] (/home/niko/work/kinto-admin/node_modules/babel/node_modules/babel-core/lib/api/register/node.js:214:7)

Sample references in published lib files: