💻

• Would you like to work on a fix?

How are you using Babel?

babel-loader (webpack)

Input code

switch ('what') {
default:
    console.log(a())
    function a() { return 1; }
}

Configuration file name

No response

Configuration

{
    "loose": true, 
    "forceAllTransforms": true,
    "exclude": ["@babel/transform-function-name"]
}

Current and expected behaviour

Current output which results in exceptions:

"use strict";

switch ('what') {
default:
    console.log(a());

    var a = function a() {
      return 1;
    };

}

We had some problems inside IE8 according to #1087 (comment), so we excluded @babel/transform-function-name, and we got output :

"use strict";

switch ('what') {
default:
    console.log(a());

    var a = function () {
      return 1;
    };

}

Expected output:

"use strict";

switch ('what') {
default:
    console.log(a());

    function a() {
      return 1;
    };

}

Environment

• @babel/core: 7.18.13
• @babel/preset-env: 7.18.10

Possible solution

Even in the switch case block, babel should analysis whether the function is called before doing the tranformation.

Additional context

No response