According to https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/delete, in strict mode, the delete operator always returns true, and throws a TypeError if trying to delete an own nonconfigurable property.
The current implementation sometimes returns false and doesn't throw a TypeError.
According to https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/delete, in strict mode, the delete operator always returns true, and throws a TypeError if trying to delete an own nonconfigurable property.
The current implementation sometimes returns
falseand doesn't throw a TypeError.