// Given:interfaceFoo{simpleMember:number;optionalMember?:string;objectMember:X;// Where X is a inline object type, interface, or other object-like type}// This:varfoo:partialFoo;// Is equivalent to:varfoo:{simpleMember?:number,optionalMember?:string,objectMember?:X};// And this:varbar:deepPartialFoo;// Is equivalent to:varfoo:{simpleMember?:number,optionalMember?:string,objectMember?:deepPartialX};