The instance.constructor.name cannot get correct result, when I use babel-loader transformed.

[zhangwen9229]

Current Behavior

I package my project with webpack.
The instance.constructor.name cannot get correct result, when I use babel-loader transformed.

    /*AminoType*/
    let objAmino = {

        [className]: class extends BaseAminoType {

            constructor(...args) {
                super()
                let idx = 0;
                properties.forEach(prop => {
                    Reflect.ownKeys(prop).forEach(key => {

    if (typeof instance == 'object') {
        if( instance.constructor.name == 'AminoType' ) return instance.typeName()
        return instance.constructor.name;

    }

The old version code below is ok.

    /*AminoType*/
    class AminoType extends BaseAminoType {

        constructor(...args) {
            super()
            let idx = 0;
            properties.forEach(prop => {
                Reflect.ownKeys(prop).forEach(key => {

Additional Information

You can check the error at my project.
https://github.com/QOSGroup/qweb/tree/v1.0
Clone it. npm install, then npm run dev. Yon can get the error on web console.