--- (1) ---
Extended
(.) -> Extended -> Base -> Object

--- (2) ---
B { x: 1 }
true

--- (3) ---
TypeError: Cannot assign to read only property 'prop' of object '#<Y>'
    at Y.foo (E:\Angular\JS\oop\Super.js:63:24)
    at Object.<anonymous> (E:\Angular\JS\oop\Super.js:73:7)
    at Module._compile (node:internal/modules/cjs/loader:1256:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1310:10)
    at Module.load (node:internal/modules/cjs/loader:1119:32)
    at Module._load (node:internal/modules/cjs/loader:960:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
    at node:internal/main/run_main_module:23:47
1

--- (4) ---
(.) -> Good -> Base1 -> Object
(.) -> Object
(.) -> SuperGood -> Base1 -> Object
ReferenceError: Must call super constructor in derived class before accessing 'this' or returning from derived constructor
    at new Bad (E:\Angular\JS\oop\Super.js:92:16)
    at Object.<anonymous> (E:\Angular\JS\oop\Super.js:109:16)
    at Module._compile (node:internal/modules/cjs/loader:1256:14)
    at Module._extensions..js (node:internal/modules/cjs/loader:1310:10)
    at Module.load (node:internal/modules/cjs/loader:1119:32)
    at Module._load (node:internal/modules/cjs/loader:960:12)
    at Function.executeUserEntryPoint [as runMain] (node:internal/modules/run_main:81:12)
    at node:internal/main/run_main_module:23:47