Property 0 not found. for Object('z').propertyIsEnumerable(0); Since 1.7.7.2

[AdamMagaluk]

Since 1.7.7.2 I believe this commit 6f0f1f6
the following code is throwing a Property X not found. error.

Object('z').propertyIsEnumerable(0);

Happens to be used in Babel/Core-js here: https://github.com/zloirock/core-js/blob/master/modules/_iobject.js

[AdamMagaluk]

Looks like the offending likes are 181-182 6f0f1f6#diff-2cf4f04515b67f4b403268e8a639d956R181

In pre 1.7.7.2 result would be false whereas 1.7.7.2 it's true .

[AdamMagaluk]

result is now set to true because NativeString now implements a has(int index, Scriptable start) method. 6f0f1f6#diff-b7aa9b03bc541a7fc69d6249d19dc668R560

[AdamMagaluk]

result = thisObj.has(index, thisObj); I think should return true for my test case since 's'[0] returns 's'. But with that on line 185. int attrs = so.getAttributes(index); fails.