Minify strip method in object that should exist

[JSerFeng]

Describe the bug

Remove class member that is accessed by another class member

Input code

function foo() {
  const obj = {
    clear: function () {
      console.log('clear')
    },
    start: function () {
      setTimeout(function () {
        this.clear();
      });
    }
  };
  return () => obj.start()
};

foo()

Config

{
  "jsc": {
    "parser": {
      "syntax": "typescript",
      "tsx": true,
      "decorators": true
    },

    "target": "es2022",
    "transform": {
      "decoratorMetadata": true,
    },
    "externalHelpers": true,
    "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": false,
  "isModule": "unknown"
}

Playground link (or link to the minimal reproduction)

https://play.swc.rs/?version=1.6.6&code=H4sIAAAAAAAAA21POw7DIAzdOYW3GKniAI3SU%2FQCaWQaKoolMFPF3UMsumXx53388TVtEjiBZ0YLPwOwcSoC%2FPrAon1HIq35Dv6vHUKlupgjuchvnFQ3WaXaTVORNcu1tZA8w5e4Cl7RALKH4nQm2nmgbVStx3aWmaRmNS6P82inG9Gazhp96gCae6CK4wAAAA%3D%3D&config=H4sIAAAAAAAAA32VO47jMAxA%2B5wicD3FYoot9gCLbeYMAmNRjmZk0RCpfDDI3Ze2FSeTyOliPv5JMd%2Bb7bb55Lb5s%2F3Wn%2FoxQGJMy7dK%2BBwFTipp5Dwgt8kP0rxdqfCIJGVcRBZbSiCUuJAJXN42cwSB1KGM%2FpDff72%2FF1%2BNJIjsKPX3wRdfHyhgQeBHsEsxxZNgihD%2BYRhwCVtgIGJUkYPAV1nvo3fn%2B0At9UNC5juZSjXV3GMU%2FmlfWKIjPxSv8h1RQC1lnRhg46NgN%2Bf66LilEGBgNAdIFS9jppA8Uy3ECLOgNUOiocqj9eJJm1WhFsGalixWkE%2FYij9gzUxjqVlkLa9Sz4Qt7nLXTZv1YI0HCBmkEhNP00g024rXPXkW43KstXCGKz2YYWnuo6V3JqHkFJ%2FtPsnHlZl8IWoHAjBH6LHmd9Jwuk9r1u6lpY9OV1bOFa77XasyYqdNNd67SmfHzmASX5tmQptbHDvb1tIpeKV97C0adE53peKaj17afS3oeFrIVYDOF1xtq2Zglle4wscH8QL%2F1SqlvmBFowfZr1M%2B9zsKLwL0KHuyLxR0FELrOOmVOA3rPEeLuhpoqyqZJ%2FB8BPQBCJkw3eGn3dDnoR5NF2h3OxNF4bKc%2BR5id3vv8z3eFIWmJ5snWP5WxvnOJ%2F93c1O6XuEl8cbzx9VS0%2F%2BKdIzN5vIfIdZH36cGAAA%3D

SWC Info output

No response

Expected behavior

obj.clear should exist in output, as it is accessed by another member in the object

Actual behavior

clear method is removed

Version

1.6.6

Additional context

No response

[kdy1]

I think it's fine to remove clear here.

function foo() {
  const obj = {
    clear: function () {
      console.log('clear')
    },
    start: function () {
      setTimeout(function () { // <- this belongs to function here
        this.clear();
      });
    }
  };
  return () => obj.start()
};

[JSerFeng]

This also fails

[JSerFeng]

Thank you !