Question: Is it a bad practice to use react-transform for production code?

[slestang]

All example and documentation seems to be about setting up react-transform only on development mode (with the help of .babelrc env property). But I recently started to use the Sentry transform that is clearly made for production code. Their documentation clearly state that they enable react-transform in production.

So I was wondering if they were any impact on my code (I think mostly about perf) about using react-transform for production code?

Related question (but slightly off topic): Does anybody know a way to have a production and development configuration for react-transform in .babelrc without duplicate part between the 2 environment?
My current .babelrc looks like this:

{
  "presets": ["es2015", "react", "stage-0"],
  "env": {
    "development": {
        "plugins": [
          [
            "lodash",
           ["react-transform", {
              "transforms": [
                {
                  "transform": "react-transform-sentry",
                  "imports": ["react"]
                },
                {
                  "transform": "react-transform-hmr",
                  "imports": ["react"],
                  "locals": ["module"]
                },
                {
                  "transform": "react-transform-catch-errors",
                  "imports": ["react", "redbox-react"]
                },
              ]
            }]
          ]
        ]
    },
    "production": {
        "plugins": [
          [
            "lodash",
           ["react-transform", {
              "transforms": [
                {
                  "transform": "react-transform-sentry",
                  "imports": ["react"]
                }
              ]
            }]
          ]
        ]
    }
  }
}

[gaearon]

So I was wondering if they were any impact on my code (I think mostly about perf) about using react-transform for production code?

Not really as long as you keep track of what transforms do and how invasive they are. For example, you don't want to enable react-transform-hmr in prod because it proxies every method and class making them much slower.