minifier: odd auto-definition in 1.2.74

[kapouer]

This one is harder to isolate for now.

The result i get is:

var Ua
S.exports = (_defineProperty(Ua = (_createClass(Ua, [{
				key: "init",

Uncaught TypeError: Cannot read property 'prototype' of undefined
at _createClass (site.min.js:2)

I attach the source (bundled by another tool). It's messy...
Likely comes from that part:

module.exports = class BlockView {

however i tried to isolate it and couldn't reproduce.

bundle.js.gz

[kdy1]

Did you use transform? What was your .swcrc?
_createClass is injected by swc or babel, so I couldn't reproduce it.

[kapouer]

{
	"sourceMaps": false,
	"jsc": {
		"loose": true,
		"parser": {
			"syntax": "ecmascript",
			"classPrivateProperty": true
		},
		"target": "es3",
		"minify": {
			"compress": true,
			"mangle": true
		}
	},
	"minify": true
}

i'll check with 1.2.76 if this happens again, and close or report further info accordingly.

[kapouer]

Nailed it !
Using swc 1.2.76

class ClassA {}

module.exports = class ClassB {
 static MyA = ClassA;

 it() {
  this.bb = new ClassB.MyA();
 }
}

and .swcrc as the one above.

[kdy1]

Thank you a lot! Reducing a test case is the most hard part :)

[swc-bot]

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