This is needed not because the DOM isn’t ready here (we’re in a
<script defer>), but because we want to wait an asynchronous tick
until after all the other callbacks that waited an asynchronous tick
for the DOM to be ready.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
ES and TypeScript modules are strict by default and don’t need this
directive. ESLint will remind us to add it to new CommonJS files and
remove it from ES and TypeScript modules.
Signed-off-by: Anders Kaseorg <anders@zulip.com>