feat(es/minifier): Detect TypeScript enum initialization pattern

[kdy1]

Description:

We can optimize

var Foo;
Foo || Foo = {};

This code looks strange, but

enum Foo {
    a = 1,
    b = 2,
}

transpiles to

var Foo;
(function(Foo) {
    Foo[Foo["a"] = 1] = "a";
    Foo[Foo["b"] = 2] = "b";
})(Foo || (Foo = {}));

and after minification it becomes

var Foo, Foo1;
(Foo1 = Foo || (Foo = {}))[Foo1.a = 1] = "a", Foo1[Foo1.b = 2] = "b";

[changeset-bot]

⚠️ No Changeset found

Latest commit: 9b7bb1c

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[kdy1]

Previous output: https://play.swc.rs/?version=1.5.9&code=H4sIAAAAAAAAA0vNK81VcMvPV6jmUgCCRAVbBUMdMDMJyDTS4arl4gIANWjFLCQAAAA%3D&config=H4sIAAAAAAAAA32VO5LbMAyG%2B5zCozpFxkWKHCCTJmfg0CIoc0MRGgL0WrPjuwek5MeuIXcWPvwACYDwx7fdrnujvvu1%2B5Cf8jHZTJBv32KhObE9i6XjeQLqc5i4%2B36lTBV5Gwma6bKQjm0egKsKaP9jv18VXUQkuCpW2xhS8PNjzh7HKQPRg02sErKMkJg%2B61eW8b0CzuXRfkCMYNMLYiyZkBgGyFrgHmO0E4E52axEqSe1ORBqKSosDM5MGSeVJxc4YJKcz9SBdaZHBwoKGXoOJ9BkkktkieR6yn0adnAow9D6%2FEUNJxuLZSUnnFtL5LRK1CMGYuNL0kq4wI0aLHAt7ldl8CYDl5yedW8Y0kZP%2FgFIBaIlSnYELW7z8DJPW2r%2FUhmSl5HlWeEy39otEwxSVBOCVypbKwOZg9bNDK70UCvba8dZ8Ub5KDgw4L3MihKa3gP3Ry1pfejoFSD9tV6bqgWY2yvc4PVBvMC%2F5ZasD9jqMVo%2BblOaxwPGFwlG4CO6Fw7SCsZtnGVLnKdtXpIDGQ1wqkuhBp6XgDwARhPbvnyaDXkeEtEMEQ%2F3NbE6XG57eLRpuL%2F3T6sYzgxZVswfiBPkhwjNoRvRlaZc%2FwFq85e9%2FbO7O11X9O1WXaC%2FV2WLd%2FkPW0EKR00GAAA%3D

---

swc-bump:

• swc_ecma_minifier
• swc_core

[swc-bot]

Automated review comment generated by auto-rebase script

[kdy1]

reset ci