Extending Vinyl still have build in properties #144
Description
Hi, in README.md [https://github.com/gulpjs/vinyl#extending-vinyl]
var Vinyl = require('vinyl');
var builtInProps = ['foo', '_foo'];
class SuperFile extends Vinyl {
constructor(options) {
super(options);
this._foo = 'example internal read-only value';
}
get foo() {
return this._foo;
}
static isCustomProp(name) {
return super.isCustomProp(name) && builtInProps.indexOf(name) === -1;
}
}
var superIns = new SuperFile();
var superInsCopy = superIns.clone();
console.log(superInsCopy.foo);
From my understanding, foo or _foo should not be in superIns and superInsCopy instacnes, but I still can query them.