Design Patterns · Middle · Question 73 of 75

Why is "Adapter" useful when replacing a date library?

✓Correct answer: Code depends on a small internal interface (formatDate, addDays); only the adapter changes when switching libraries
2Adapters make bundles smaller automatically
3Date libraries require adapters to run

Explanation

Wrapping wide third-party APIs behind a narrow interface limits how many files a migration touches.

Further reading

Refactoring.Guru: Adapter ↗

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