Should we support single-line control-flow statements?

[gibson042]

(derived from #9688 (comment))

To satisfy the github/array-foreach ESLint rule, #9688 is changing lines like

  keywords.forEach(assertKeywordName);

into

  for (const keyword of keywords) {
    assertKeywordName(keyword);
  }

However, I believe it would be nice to preserve the brevity of the former:

  for (const keyword of keywords) assertKeywordName(keyword);

This is currently not allowed in agoric-sdk (although it is in endo, cf. encodePassable.js/arb-passable.js/etc.), but we could enable it by adding curly: ["error", "multi-line"] ESLint configuration.

[erights]

I'm on the fence. I always write it with curlies. But as long as the curlies can only be omitted when it is on the same line, I have no objection. I would not be surprised if I come to love it over time ;)