```JS o({ [Symbol("a")]: 1 }).deepEquals({}) // passes, but IMO shouldn't. ``` [flems](https://flems.io/#0=N4IgZglgNgpgziAXAbVAOwIYFsZJAOgAsAXLKEAGhAGMB7NYmBvEAXwvW10QICsEqdBk2J5aACgA6IOAFcIjaRQAE4gJQBeAHzBJaZconBkAZQCeWAEa0oUkBmlqAuomUBGVmvwATGDAAOAKIAjrIYUHDiwJ56MWi0+ABOsmjqlDIwsNTEEPQIPADMiADsbBwgmDh4+NRwAjT0jMw8bE5UUBBoANb5qBVcYnD+MNTpsonkPCTE-nCIAPTzKf5dAOY1tFjztEMjAAIALPgATPgADNu71Pj86cRmw3hw1IkQ-qKsTqxAA)