rationale for separate prod / dev sections?

[mattkauffman23]

We just ran into an issue where our build in a staging env crashed due to a CSP violation. We traced it back to a problem with a specific version of https://github.com/facebook/regenerator, which wasn't too big a deal. The issue was that problem didn't show up in development because regenerator wasn't being included as it wasn't required for the target based on the browserlist. We're thinking we should configure production / development to be identical, but wanted to understand why they're separated in the default configuration create-react-app produces. Here's what's included in package.json by default:

  "browserslist": {
    "production": [
      ">0.2%",
      "not dead",
      "not op_mini all"
    ],
    "development": [
      "last 1 chrome version",
      "last 1 firefox version",
      "last 1 safari version"
    ]
  }

Anyone familiar with tradeoffs in using a "larger" browser list in development?