Invalid code produced via Minify/Compress in 1.4.1+

[marcusdarmstrong]

Describe the bug

Regression from 1.4.0, code yields a reference error. "dead_code" or "hoist_props" minifier options set to false mitigate the issue.

Input code

d(() => {
  var obj = {
    key: "some string",
  };
  
  var b = () => {
    switch (a) {
      default:
        break;
    }
    return obj.key;
  };
  return () => b;
});

Config

{
  "jsc": {
    "parser": {
      "syntax": "ecmascript",
      "jsx": false
    },
    "target": "es5",
    "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": false
    }
  },
  "module": {
    "type": "es6"
  },
  "minify": true,
  "isModule": true
}

Playground link (or link to the minimal reproduction)

https://play.swc.rs/?version=1.4.6&code=H4sIAAAAAAAAA0WNUQqDMBBE%2Fz3F4FcCxQO42LskdbXWVmETFZHc3Zim9GdgHrP7WqU0mjuOAliNYLYvNKkBI%2B81Sjd%2FGM7LMPXlLfJAMfLaxu3%2FHnDb4B9PKKMzAFruzPL2da6AFTYjpRpSCvtFpstcRSP9FBl%2F31sqgqYT2Fivw60AAAA%3D&config=H4sIAAAAAAAAA32US3LbMAyG9zmFR%2Bts20UPkF3PwKFJUKbDh4YAHWsyvnshSrLdGNJOwocfIAEQ32%2BHQ3dG0%2F05fPMn%2Fwy6IJT7P1twTKSvbOnARI2m%2BIG695WecUJOB4Rmus2kI116oKbCX4t7F3JGWN0XW%2FTJu%2FE5oclxKID4ZGMrx6sREuH%2F%2BoWV%2FDUBKvXZfsw5gE47RGlUPhH0UKTAJoegBwR10UWIMp1UF49ZSjHBSmDVUPIg8mQ9%2BZw45yu1oK0y2YKAfAFD%2FgKSjHOxLCFfT7hPwxaOte9bk3%2Bo4aJD1STkhGtrCZ9WiHrKHkm5mqQSznCjBjNcivtT6Z0qQLWkV905%2B7TRk08ArkDQiElHkOI2D8fztKV2u0qfHI8sjQLn%2BZZumaDnoirvnVDZqTJQyEvdLGCrgamyRjrOgjfKh96CAud4VoTQ%2BOXJnKSkNA6QnQC4v9pJUzUDdX%2BFG3x6EDv4g29J8oAtHlHTaZviGI857CSIQKdsdxy4FZS3ceEtcR22eU0WeDTAii4VG3hdAvwAKKvQluXLbPDz4IiqD%2Fn4WBOLw%2B2%2BhKNO%2FeO9z3v4bXHoYra1wWXDT%2F2d9%2FLv7uG0buH1BJ3Hv6uw5bz9A1EN%2Bh8sBgAA

SWC Info output

No response

Expected behavior

d(function(){var b=function(){return a,"some string"};return function(){return b}});

Actual behavior

d(function(){var b=function(){return a,obj.key};return function(){return b}});

Version

1.4.6

Additional context

Modifying pass count reveals the intermediate error, with the key failure being in pass 2:
Pass 1: d(function(){var obj={key:"some string"},b=function(){return a,obj.key};return function(){return b}});
Pass 2: d(function(){var obj_key="some string",b=function(){return a,obj.key};return function(){return b}});
Pass 3: d(function(){var b=function(){return a,obj.key};return function(){return b}});

[swc-bot]

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