@ezs/lodex formatOutput: empty stream breaks JSON

[parmentf]

ezs/packages/lodex/src/formatOutput.js

Lines 40 to 44 in 7a7f1c2

	if (this.isLast()) {
	feed.write(']}\n');
	return feed.close();
	}
	if (this.isFirst() && !this.isLast()) {

What happens when the first chunk is also the last one?
The output should be ]}\n, and the stream closed.
That is not parseable.

Or does ezs not call the statement when the stream is empty?

Maybe linked: @jj618 queried a lodex routine (all-documents), and sometimes encountered an unfinished JSON response.
It lacked only ]}\n, which seems to be linked to formatOutput, which is an alias of the used LodexOutput statement.
It happened only in important volumes (maybe @jj618 can provide the numbers).