Illegal constructor in JS

[sebab97]

TypeScript Version: 2.1.4

Code

module graphics {

	export class Texture extends HTMLImageElement {

		constructor(src: string) {
			super();
			this.src = src;
		}

	}

}

/* another file */
var texture: Texture = new graphics.Texture('png/0.png');

`

/* tsconfig.json */
{
	"compilerOptions": {
		"outFile": "../public/js/app.js",
		"target": "es5"
	}
}

Expected behavior: Execute in browser without errors.

Actual behavior: TypeError: Illegal constructor.

[mhegazy]

Please find more details in MDN on how custom elements work.

Also see #574 (comment)