fix: Don't create messages declaration file when running next {start,info,telemetry}
#1992
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…,info,telemetry}`
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amannn
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Sep 4, 2025
…upcoming `next@15.5.1` (#2008) Fixes #2006 Related to #1992 Related to vercel/next.js#82654
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When using
createMessagesDeclaration, we previously created the declaration for all of these scenarios:next dev(incl. a watcher)next buildnext typegen(new in Next.js 15.5)next startnext infonext telemetry(not for
next lintthough, because it doesn't consultnext.config.js)The last three items in this list don't really require creating a declaration, so as of this PR we no longer do this.
On the other hand, the newly introduced
next typegencomes in really handy to continue creating the declaration.