annevk: I finally found some corroboration for my belief that "e.g." doesn't always need a comma after it: https://www.grammarly.com/blog/know-your-latin-i-e-vs-e-g/ talks about how it's important to add a comma when introducing a list of examples, but (implicitly) not for a single example. Also https://english.stackexchange.com/questions/16172/should-i-always-use-a-comma-after-e-g-or-i-e talks about how all the grammar guides hedge.

That said, I'm happy to settle on consistent and easy-to-remember WHATWG style being always to use the comma. I just wanted to make sure I wasn't crazy.

Domenic: About the error check after enqueue in Fetch:

r = new ReadableStream({
  async pull(c) {
    await new Promise(r => setTimeout(r, 100));
    c.byobRequest.respond(512);
  },
  type: "bytes"
});
reader = r.getReader({mode: "byob"});
reader.read(new Uint16Array(1024));
setTimeout(() => reader.releaseLock(), 5);

This eventually hits https://streams.spec.whatwg.org/#abstract-opdef-readablebytestreamcontrollerenqueueclonedchunktoqueue which theoretically can error the stream. Can Fetch really ignore this?