Object Descriptors & Property Flags

What immutability pattern does this function implement?

function createConstant(obj, name, value) {
  return Object.defineProperty(obj, name, {
    value: value,
    writable: false,
    enumerable: false,
    configurable: false
  });
}

Factory pattern
Private property creation
Immutable constant definition
This function implements an immutable constant definition pattern by: 1) Creating a property that cannot be changed (writable: false), 2) Making it hidden from enumeration (enumerable: false), 3) Preventing deletion or descriptor modification (configurable: false), 4) The property essentially becomes a permanent, unchangeable part of the object, 5) This pattern is useful for adding configuration constants or internal fixed values, 6) It's similar to how Object.freeze() works but at a per-property level, 7) This creates the strongest form of property protection available in JavaScript.
Property inheritance

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