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The Lazy Import Bundlers Can't See

Code splitting silently fails to produce separate chunks for each page in this setup, even though the import resolves correctly at runtime.

REACT_MODULE // 0x42
function loadPage(pageName) {
  return React.lazy(() =>
    import(`./Pages/${pageName}/index.js`)
  );
}

const DynamicPage = loadPage(selectedPageName);

Why does the bundler fail to produce separate chunks here?

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