Minifier doesn't inline arrow function parameter

[mischnic]

Describe the bug

The minifier doesn't inline the message variable, it's still in the output (with a single use).

Input code

const ErrorResponse = (statusCode, message) => {
    return Response.json({
        message
    }, {
        status: statusCode
    });
}

export const unknownError = ErrorResponse(520, "Unknown error.");

or alternatively

let message;
export const unknownError = (message = "Unknown error.", Response.json({ message }, { status: 520 }));

Config

{
  "jsc": {
    "parser": {
      "syntax": "ecmascript",
      "jsx": false
    },
    "target": "es2024",
    "loose": false,
    "minify": {
      "compress": {
        "arguments": false,
        "arrows": true,
        "booleans": true,
        "booleans_as_integers": false,
        "collapse_vars": true,
        "comparisons": true,
        "computed_props": true,
        "conditionals": true,
        "dead_code": true,
        "directives": true,
        "drop_console": false,
        "drop_debugger": true,
        "evaluate": true,
        "expression": false,
        "hoist_funs": false,
        "hoist_props": true,
        "hoist_vars": false,
        "if_return": true,
        "join_vars": true,
        "keep_classnames": false,
        "keep_fargs": true,
        "keep_fnames": false,
        "keep_infinity": false,
        "loops": true,
        "negate_iife": true,
        "properties": true,
        "reduce_funcs": false,
        "reduce_vars": false,
        "side_effects": true,
        "switches": true,
        "typeofs": true,
        "unsafe": false,
        "unsafe_arrows": false,
        "unsafe_comps": false,
        "unsafe_Function": false,
        "unsafe_math": false,
        "unsafe_symbols": false,
        "unsafe_methods": false,
        "unsafe_proto": false,
        "unsafe_regexp": false,
        "unsafe_undefined": false,
        "unused": true,
        "const_to_let": true,
        "pristine_globals": true
      },
      "mangle": {
        "toplevel": false,
        "keep_classnames": false,
        "keep_fnames": false,
        "keep_private_props": false,
        "ie8": false,
        "safari10": false
      }
    }
  },
  "module": {
    "type": "es6"
  },
  "minify": true,
  "isModule": true
}

Link to the code that reproduces this issue

https://play.swc.rs/?version=1.12.9&code=H4sIAAAAAAAAA1WOTQrCMBCF9znFo6sWQhHBjVI34gUED1DqICjOlJkEBendTROl%2BHaP98M3CFvAUVX0RDYmR%2BhQW%2BhDtINcyONBZv2VGnR7vB2SlEJUxm%2FQ3ky4LtGs7yD7yWMJyusWy3vpNDs3OUevUTRgyESR7yxPzmAJ6A%2Bw3qxXHtW5VEBz1lbp5AN36zRhzQAAAA%3D%3D&config=H4sIAAAAAAAAA41VwW7bMAy99ysCn3foimIY9gG77RsExaIcZbJoiJSboMi%2Fj1bsNG1oY5cg5tMjRfKRen%2Fa7Zojtc2v3bv8lY%2FBZoJ8%2BxYLnRPbk1gaaHtLbQ4DN98W9EgT5G0kqKbLFWnY5g64sujl%2BeV1ZjQRkWBhzLY%2BpODP9zFb7IcMRHc2sYrL0kNi%2BsyfsYxvE8C53Nv3iBFs2kCMJRMSQwdZc9xijHYgMKPNipfppjYHQi3EBBYGZ4aMg4onFzhgkpiPqAPrTIsOFChkaDmMoNEkltASSXpKPhV2sC9dV%2Fv8hQ2jjcWyEhNOtSVyW8XrAQOx8SVpJbyCKzW4gnNxvzKDNxm45PTIO2JIKz35CyAViJYo2R40v%2FWEFz2tsf0mMyQvkuWzgou%2BtSwTdFJUE4JXKjtVBjIHrZsZXGlhqmyrXWeGV8pHwYEB70Urimt6C9wetKB8HgC9Akh%2FrddUdQXMbQpX8GkgNuDfkiXrAptP9JYP6yid%2Bz3GjQA98AHdxgFpBeM6nGVLnIZ1vCQHIg1w6pFCFXhcAjIAjCbWffmgDRkP8Wi6iPuPNTEfuNz2cG9TV%2Bf9bl8yDhFGiGsy%2Fo8R2UTlbuOk6mWyH6YXfmqitDJ44fvzp2dDUnlafmtSTY%2Bu3CVUNXl9Tn40H4eWl2OpWhPoz0Ksdbr8AzzE8uLjBgAA

SWC Info output

No response

Expected behavior

export const unknownError=Response.json({message:"Unknown error."},{status:520});

Actual behavior

let message;export const unknownError=(message="Unknown error.",Response.json({message},{status:520}));

Version

1.12.9

Additional context

No response

[kdy1]

The problem here is export keyword.

https://play.swc.rs/?version=1.12.9&code=H4sIAAAAAAAAA0vOzysuUXAtKsovCkotLgDyUhVsFTSKSxJLSoud81NSdRRyU4uLE9NTNRVs7RSquRSAoCi1pLQoTwGmQS%2BrOD9PAyIFAlANYH6tjgJCAmKqlQLCdIgaTWuuWi6uZLBTSvOy8%2FLL88AuAroExWUapkYGOgpKoRAlCqkgOT0loG4AHnG9AcYAAAA%3D&config=H4sIAAAAAAAAA41VwW7bMAy99ysCn3foimIY9gG77RsExaIcZbJoiJSboMi%2Fj1bsNG1oY5cg5tMjRfKRen%2Fa7Zojtc2v3bv8lY%2FBZoJ8%2BxYLnRPbk1gaaHtLbQ4DN98W9EgT5G0kqKbLFWnY5g64sujl%2BeV1ZjQRkWBhzLY%2BpODP9zFb7IcMRHc2sYrL0kNi%2BsyfsYxvE8C53Nv3iBFs2kCMJRMSQwdZc9xijHYgMKPNipfppjYHQi3EBBYGZ4aMg4onFzhgkpiPqAPrTIsOFChkaDmMoNEkltASSXpKPhV2sC9dV%2Fv8hQ2jjcWyEhNOtSVyW8XrAQOx8SVpJbyCKzW4gnNxvzKDNxm45PTIO2JIKz35CyAViJYo2R40v%2FWEFz2tsf0mMyQvkuWzgou%2BtSwTdFJUE4JXKjtVBjIHrZsZXGlhqmyrXWeGV8pHwYEB70Urimt6C9wetKB8HgC9Akh%2FrddUdQXMbQpX8GkgNuDfkiXrAptP9JYP6yid%2Bz3GjQA98AHdxgFpBeM6nGVLnIZ1vCQHIg1w6pFCFXhcAjIAjCbWffmgDRkP8Wi6iPuPNTEfuNz2cG9TV%2Bf9bl8yDhFGiGsy%2Fo8R2UTlbuOk6mWyH6YXfmqitDJ44fvzp2dDUnlafmtSTY%2Bu3CVUNXl9Tn40H4eWl2OpWhPoz0Ksdbr8AzzE8uLjBgAA

I think sequence logic is not handling ModuleItem

[swc-bot]

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