Adds an object to the WeakSet.

• Category: JS WeakSet Reference — part of the JavaScript Tutorial on GoCareerGo
• Read the short summary above, then check the linked docs for full syntax/behaviour
• Interview tip: be ready to explain "WeakSet.prototype.add()" in one sentence, then back it up with a tiny example

// WeakSet.prototype.add() — minimal example
console.log("WeakSet.prototype.add()");