This is my prototype:

Object.defineProperty(Set.prototype, 'isSubsetOf', {
    value: function(this: Set<string>, otherSet: Set<string>): boolean { ... }
})

I want something that will give the name of Set.isSubsetOf, which is: "isSubsetOf"

The following is my attempt to retrieve the name of Set.isSubsetOf:

console.log(Set.prototype.isSubsetOf.name);  // output: "value"

Why do I want it?

So that I can generate more descriptive test suite names:

describe(`unit-test: Set.prototype.${Set.prototype.isSubsetOf.name} method`, () => { ... });