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…orkspace resolution Without a source condition, Turbopack lazily compiles workspace packages through their dist/ files. When @jonmatum/next-shell/auth was the first subpath resolved in a fresh Turbopack session (e.g. /dashboard as the initial route), the module couldn't be resolved — likely a race in Turbopack's symlink + package exports resolution during the first compilation pass. Adding "source": "./src/<path>.ts" to every export entry tells Turbopack to compile from TypeScript source directly when the package is resolved as a workspace symlink. This is the standard pattern for pnpm monorepo library packages with Next.js 15 / Turbopack. The source condition is ignored by non-Turbopack consumers (Node CJS require, standard ESM bundlers) since they don't recognize it, so published behavior is unchanged. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
Adds
"source": "./src/<path>.ts"to every export inpackage.json.Root cause: Turbopack lazily resolves workspace packages through their
dist/files. When@jonmatum/next-shell/authwas the very first subpath compiled in a fresh session (e.g./dashboardas the initial route after a server redirect), Turbopack failed to resolve it withModule not found. Navigating to any other route in the(shell)group first would warm the cache and fix it — confirming a lazy-compilation race specific to the first module boundary crossing.Fix: The
sourcecondition tells Turbopack to compile from TypeScript source directly when the package is a workspace symlink. This is the standard pattern for pnpm monorepo library packages. The condition is ignored by all other consumers (Node require, webpack, standard ESM bundlers).Verification