dart_style VS fpdart

> Oh I'm curious why you're rewriting it?

The primary driver is that we're moving to a fairly different formatting style: https://github.com/dart-lang/dart_style/issues/1253

The formatter works sort of like a compiler in that it parses the code, translates it to an internal representation, does optimization on that IR, and then outputs final code. The main difference is that the "final code" is also source code, and the "optimization" is line splitting.

The old IR grew organically over time and got increasingly difficult to work with. It baked certain formatting choices directly into the IR (mainly indentation) which line splitting then had no control over. For example, given a function call like:

    someLongFunctionName(some + long + argument + expression, [firstElement, anotherElement, aThirdElement]);

in your analysis_options.yaml. The formatter doesn't understand the new syntax yet, though.

Sorry, perhaps im not quite familiar with the GitHub issues you’re chatting about, but a quick search shows the Dart team actually made a very similar argument about laptops and diffs as the first reply in a thread about the 80 character max: https://github.com/dart-lang/dart_style/issues/833

Nope, but there is a proposal to set line length in pubspec.yaml: https://github.com/dart-lang/dart_style/issues/918

The standard Dart extension only supports formatting using the SDK-supplied formatter (dart_style) which (by design) is not configurable (although it can be turned on/off with the dart.enableSdkFormatter setting).

Flutter itself provides formatting choices, however, it only formats Dart files and it doesn’t re-order the code. Flutter formats the code based on these formatting rules.

There are some other possibilities - such as complex code being slow to format (for example I hit https://github.com/dart-lang/dart_style/issues/1022 and originally thought it was a repro for this issue), or that the server is busy doing its initial synchronous scan of the workspace, though those should be temporary and the format should eventually complete so it's probably not what most people are reporting here.

Really cool, might import it and give it a shot!

https://github.com/SandroMaglione/fpdart/blob/main/examples/...

use a 3rd party package like fpdart, which offers ergonomic APIs like Either and TaskEither

By the way, I highly recommend checking out fpdart. It has most stuff that dartz has but also provides docstrings and is well-tested

If you use something like fpdart, you have the more functional Either type (called Result in Rust).

https://pub.dev/packages/fpdart#eitherlibsrceitherdart

I’ve been using Either and friends from fpdart and very happy with the way it helps clean up the code.

You can get a lot of this by mixing in some uses of https://pub.dev/packages/fpdart. It's not whole-ly integrated, but the boundaries aren't too intolerable.

I find https://pub.dev/packages/fpdart to be a better documented and tested and modernly maintained functional implementation, and includes tools to connect futures with either or option.

Use fpdart instead have better support.