Next.js Edge route builds can still fail at runtime, study finds

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A test of Next.js 16.3.4 found that an Edge route using eval built successfully but returned a 500 error when called. The same expression ran correctly on the Node.js runtime, returning 200. A separate Edge route importing Node file APIs failed during the build, while Web API code ran in both runtimes. The author concludes that compatibility should be verified through actual HTTP requests, not just builds or imports. The experiment examined existing code and did not recommend adopting Edge for new applications.

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