/bugreport-nextjs-await-breaks-dead-code-elimination

Primary LanguageTypeScript

Bug report

Steps

npx create-next-app@canary --ts nextjs-await-breaks-dead-code-elimination
cd nextjs-await-breaks-dead-code-elimination

Reproduce the bug

rm -rf .next
npm run build
npx prettier --write './.next/**/*.js'
echo ""
echo "found wrong things:"
grep -rnw './.next/static' -e 'bug-check:server-only'

This should find one occurence of console.log("bug-check:server-only"); in browser build, which is not good.

If you remove await new Promise((res) => res(null)); from ./bug.ts than the dead code elimination works ok.