LiveTyping VS prettier

Hernán Wilkinson will be our host. He will present LiveTyping: Automatic Type Annotation for Dynamically Typed Languages. Introduction to the concept. Possibilities. Demo.

IDE Assistance? Smalltalk had it early and continues to evolve it to new heights - lately with experiments in Live Typing

There are more ways to ensure correct code than manifest static typing. There are editors that will assist you in the construction of correct code that do not rely on old school static typing. Live Typing for instance uses a vm that examines running code and determines things like actual return types for methods on classes and what types are most frequently passed for arguments and feeds that information to the editor to generate warnings to the programmer when they are writing code that may be questionable. These are just editor style warnings but they provide additional feedback to the programmer that the code they are writing may not work as expected. This is what you really want. Help constructing correct code. Here is a talk explaining it in more detail.

Currently, almost all mainstream dynamically typed languages support type annotation a la Strongtalk. Python calls it "type hints", TypeScript is JavaScript+type annotations, PHP calls it "type declarations" and Ruby does it through a tool called Sorbet. All of them annotate the types in the source code and it is the programmer who must write and maintain the annotation. In all cases, it is not mandatory for the system to correctly type check for it to run. LiveTyping is a type system proposal for Smalltalk, that seeks similar objectives but implemented in a different way. First, it is the environment itself that collects and maintains the types based on the execution of the system, not the programmer. Second, the types are not interleaved in the source code, thus maintaining the syntax and simplicity of the language. And finally, the main objective is not to carry out a static type checking (although it supports it), but to augment the programmers experience increasing the usability of current tools such as searching for senders and implementers, and performing more accurate and safe refactorings. In this talk Hernan will briefly show how LiveTyping is implemented to later concentrate on the improvements made to the tools and the benefits it brings when developing software with Smalltalk. LiveTyping is currently implemented in Cuis Smalltalk and has been successfully used for the last two years in three different universities in Argentina when teaching Object Oriented Programming and Design.

From my point of view, Prettier doesn't work well for styling with utility classes. For a discussion see Prettier#7863 or Prettier#5948.

Prettier: An opinionated code formatter that enforces a consistent code style.

Automating code checks with static code analysis allows us to enforce code styling effectively. By integrating tools into our workflow, we can identify errors at an early stage, while coding instead of blocking us at the end. For instance, flake8 checks Python code for style and errors, eslint performs similar checks for JavaScript, and prettier automatically formats code to maintain consistency.

So anyways, I wanted to hook up Emacs with Astro support. For now, I've just been roughing it out there and running Prettier by itself and turning off save on format and auto-complete. It's been scary.

If you're a developer, you're surely familiar with Prettier and ESLint. With over 8 years of existence, they have established themselves as references in the JavaScript ecosystem.

prettier is used to format you text

No formatting inconsistencies: The committed code should follow the organization's code formatting standards(prettier or pretty-quick).

Let’s walk through the steps for a one-time setup to configure husky pre-commit and pre-push hooks, ESLint with code styles conventions, prettier code formatter, and lint-staged. Husky automatically runs a script on each commit or push. This is useful for linting files to enforce code styles that keeps the entire code base following conventions.

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Prettier: An opinionated code formatter that enforces a consistent code style.