feat: emit batch

[gunb0s]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/nestjs/nest/blob/master/CONTRIBUTING.md
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

What is the current behavior?

Issue Number: #12748

What is the new behavior?

enable kafka producer to emit batch

Does this PR introduce a breaking change?

• [v] Yes
• No

Other information

[coveralls]

Pull Request Test Coverage Report for Build d4f0316f-3bf4-4a53-b632-eebbc32fa552

Details

• 14 of 22 (63.64%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.05%) to 92.051%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
packages/microservices/client/client-kafka.ts	14	22	63.64%

Totals
Change from base Build 7ac098a9-c60b-4faa-9612-e3dbed2e2eb6:	-0.05%
Covered Lines:	6728
Relevant Lines:	7309

---

💛 - Coveralls

[Tony133]

For the rest it seems ok 👍

[Tony133]

Suggested change

	if (packets.data.messages.length === 0) return;
	if (packets.data.messages.length === 0) {
	return;
	}

[gunb0s]

feat: add block wrapping return

[apparelmagic-heath]

Would love to see this feature merged. Very handy for our use-case.

[bozorgmehr96]

@kamilmysliwiec Is this going to be merged, and if so, do you have any estimates for when?

And another thing, are you open to batching now? You said no here, #9455
Since you green-lighted batch producing, I need batch consuming and want to know if I should also have hope for it. I might start a PR for it if I find some free time.

[binh-truong-tpv-mti]

hi all, pls consider this PR

[svitlana-konovalenko]

Hey there! Any updates?

[posquit0]

@Tony133 @kamilmysliwiec I need this feature, too! Could you consider to merge this PR?

[Tony133]

@Tony133 @kamilmysliwiec I need this feature, too! Could you consider to merge this PR?

It need to be seen whether it can be merged into version 10.x of NestJS or put into the future version 11.