๐Ÿงฉ Your MapStruct Mappers Are Hiding Null Bugs

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DEV Community ยท Kyryl ยท 2026-06-18 ๊ฐœ๋ฐœ(SW)

Someone adds a field to a DTO. The entity already has it. MapStruct compiles fine, the tests pass, the PR merges. Two weeks later the field is null in production and nobody knows why. The compiler knew. It just wasn't told to care. MapStruct isโ€ฆ

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