an object of The class which is extends by base type like Array,Number,Object,String or Error is not instanceof this class

[wm123450405]

index.js

class Exception extends Object { //Array, Number, String, Function, Error, RegExp, Boolean all of base type has this program
	constructor() {
		super('Exception');
	}
}
module.exports = Exception;

gulpfile.js

const gulp = require('gulp');
const browserify = require('browserify');
const babelify = require('babelify');
const source = require('vinyl-source-stream');
const buffer = require('vinyl-buffer');

gulp.task('default', () => {
	browserify({
			entries: "./index.js",
			standalone: 'Exception',
			debug: true
		})
		.transform(babelify.configure({
			presets: ["es2015", "stage-3"],
			sourceMaps: true
		}))
		.bundle()
		.pipe(source('index.js'))
		.pipe(buffer())
		.pipe(gulp.dest('./dest'));
});

test.js

const Exception = require('./dest/index');

console.log(new Exception() instanceof Exception);

the result is false

new Exception() is not instanceof Exception, but only instanceof Error

[babel-bot]

Hey @wm123450405! We really appreciate you taking the time to report an issue. The collaborators
on this project attempt to help as many people as possible, but we're a limited number of volunteers,
so it's possible this won't be addressed swiftly.

If you need any help, or just have general Babel or JavaScript questions, we have a vibrant Slack
community that typically always has someone willing to help. You can sign-up here
for an invite.

[hzoo]

We don't support extending built-ins yet: http://babeljs.io/docs/usage/caveats/#classes but we are trying to figure out a solution. #4480