What will Domain be replaced with?

I'm adding support for parallel tests to node-tap. https://github.com/tapjs/node-tap/issues/306

One sticky point is that, like most test frameworks, node-tap needs to be able to cleverly handle thrown errors and tie them to the test environment where the error was thrown from (especially since many existing assertion libs turn things like expect(foo).to.match(/regexp/) into a thrown error).

When tests were not run in parallel, there was no problem. Just walk down the tree of test.currentChild or whatever, and a single process.on('uncaughtException') is sufficient.

I'm using Domains to manage thrown errors in child tests, and it works great, but the bright red deprecation notice in the docs is scary.

What will it be replaced with? Will it be feature-equivalent? If so, is there any reason why the existing API has to be broken, and not re-implemented in terms of the new thing? Is there an expected time frame for the Domain api to be broken?

Thanks.

まず Node.js の Domains に関するドキュメントと、リンクされている node-tap の parallel-tests issue を読みます。次に、スローされたエラーを子テストに関連付けるために test.currentChild と process.on('uncaughtException') がどのように使われているかを調べます。完了の条件は、Domains の承認済みの代替を特定し、それが feature-equivalent かどうかと、API-breaking の変更が行われる予定時期を明らかにすることです。