IsPropertyReference? - Example for foo.bar() article

IsPropertyReference.js

// IsPropertyReference?

// 1. Different notations for accessing a property name

foo.bar() // ✅
foo["any string here"]() // ✅

// 2 Property name can also be a symbol - inbuilt or custom

someArray[Symbol.iterator].toString() // ✅
foo[Symbol("bar")]() // ✅

// 3. Chained is ok (this = last chained obj)

foo.foo1.bar() // (this = foo.foo1) ✅
foo.foo1.["any string here"]() // ✅

// 4. LHS can also be a primitive

"hello world".toUpperCase() // ✅
true.toString(); // ✅

// 5. LHS can be be wrapped in parenthesis

(foo.bar)() // ✅
(foo["bar"])() // ✅

// 6. LHS can not be a complex expression or a function variable

someFn = foo.bar;
someFn() // ❌

(hello = foo.bar)() // ❌

(0, foo.bar)() // ❌

// 8. Object part of the LHS can be a complex expression

(foo1 = foo).bar() // ✅
createFoo().bar() // ✅