Inheritance patterns and composition
Comes up in: Low-level design, JavaScript
This concept is being written. It gets the full five steps — explanation, predict, interview angle, practice with tests, and review cards. Here is exactly what it will cover, so you can study it elsewhere in the meantime.
What it covers
- prototypal vs classical
- mixins
- composition over inheritance
- extending built-ins (Array, Error) caveats
Symbol.species(awareness)
Words you will know
What you will practise
- refactor deep inheritance to composition
Interview questions this answers
- Explain prototypal inheritance.
- Composition vs inheritance: when do you choose each?