When you lose encapsulation, you lose the contract of the declaring class; you cannot guarantee that the class behaves as intended or expected.

Using a property or a method to access the field enables you to maintain encapsulation, and fulfill the contract of the declaring class.

Anything that isn't explicitly enforced by contract is vulnerable to misunderstandings. It's doing your teammates a great service, and reducing everyone's effort, by eliminating ambiguity and enforcing information flow by design.

In 1994, The Unix-Haters Handbook was published containing a long list of missives about the software—everything from overly-cryptic command names that were optimized for Teletype machines, to irreversible file deletion, to unintuitive programs with far too many options. Over twenty years later, an overwhelming majority of these complaints are still valid even across the dozens of modern derivatives. Unix had become so widely used that changing its behavior would have challenging implications. For better

Adapters are required to make Request globally available if it isn't already part of the target platform. It's part of the (currently undocumented) contract — see e.g. adapter-node

"Objects in a program should be replaceable with instances of their subtypes without altering the correctness of that program." See also design by contract.

What is an iterable object in JavaScript? It’s an object that supports the iterable protocol.

Indeed, this simple contract is very close to that of an ob­serv­able, such as those provided by Rxjs. set is basically equiv­a­lent to next in the ob­serv­able world.

The $ contract for auto-sub­scrib­ing is lovely in its sim­plic­ity and flex­i­bil­ity. You can adapt your own preferred state-man­age­ment pattern or library, with or without Svelte stores as helpers. Svelte does not fuss about how you want to manage your state.

This naming convention helps developers understand the component’s contract