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Turbopack dev: next/dynamic preloads a chunk that is never emitted (404) when the component has an import()
In Next.js dev with Turbopack, using next/dynamic to load a component that contains a plain import() causes the page HTML to reference a chunk that the dev server never emits, resulting in 404 errors on every page load. This affects both App Router (preload link) and Pages Router (script src). The actual dynamic import still works because the emitted loader chunk has a different hash.