Oct. 14, 2023, 2:39 p.m. | Rubén Alapont

DEV Community dev.to

Welcome back to our SOLID Principles Series. In this installment, we'll unravel the Liskov Substitution Principle (LSP) and explore how to apply it effectively in Node.js using TypeScript.





Understanding the Liskov Substitution Principle (LSP)


The Liskov Substitution Principle, represented by the "L" in SOLID, is a fundamental concept in object-oriented programming. It states that objects of a superclass should be replaceable with objects of a subclass without affecting the correctness of the program.


In simpler terms, if a program is …

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