Re: [whatwg/streams] assert invariants in InvokeOrNoop and friends (#584)

isonmad commented on this pull request.



> @@ -62,6 +62,10 @@ exports.IsFiniteNonNegativeNumber = v => {
 };
 
 exports.InvokeOrNoop = (O, P, args) => {
+  assert(exports.typeIsObject(O) === true);

Ah, right, I didn't notice that distinction.

So we have to allow `underlyingSource` et al. to be a boolean, string, or symbol, and treat it like they passed `{}` i.e. no methods?

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