Photo by Jasper Garrat on Unsplash
In his post “Inversion of Control” Kent C. Dodds starts off with a simple
filter function and how it can quickly become a mess as features creep in. Using IoC it’s possible to keep the implementation, diverting some responsibilities away from it:
We changed the responsibility of deciding which element gets in the new array from the filter function to the one calling the
filterfunction. Note that the
filterfunction itself is still a useful abstraction in its own right, but it’s much more capable.
And yes, of course Kent wings back to React in his post. What else would you have expected? 😉
IoC (and DI) are big themes in the PHP world, but not that much in the JS world. Good to read that it also gets some explicit attention in the JS world now 🙂