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MODULES.md

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Modules

And by modules, I mean Maven artifacts.

Guide

These are the directions for using scalajs-react in its default way, with the opt-in optional features shown for you to accept or remove.

Add to sbt:

val ScalaJsReactVer = "<latest>"

libraryDependencies ++= Seq(

  // Optional extensions for Cats / Cats Effect
  // (Note: these need to come before "core")
  "com.github.japgolly.scalajs-react" %%% "core-ext-cats"        % ScalaJsReactVer,
  "com.github.japgolly.scalajs-react" %%% "core-ext-cats_effect" % ScalaJsReactVer,

  // Mandatory
  "com.github.japgolly.scalajs-react" %%% "core"                 % ScalaJsReactVer,

  // Optional utils exclusive to scalajs-react
  "com.github.japgolly.scalajs-react" %%% "extra"                % ScalaJsReactVer,

  // Optional extensions to `core` & `extra` for Monocle
  "com.github.japgolly.scalajs-react" %%% "extra-ext-monocle2"   % ScalaJsReactVer,
  "com.github.japgolly.scalajs-react" %%% "extra-ext-monocle3"   % ScalaJsReactVer,

  // For unit tests
  "com.github.japgolly.scalajs-react" %%% "test"                 % ScalaJsReactVer % Test,
)

Imports:

import japgolly.scalajs.react._
import japgolly.scalajs.react.vdom.html_<^._
import japgolly.scalajs.react.ReactCats._
import japgolly.scalajs.react.ReactMonocle._

// Unit tests
import japgolly.scalajs.react.test._

If you include the core-ext-cats_effect module you'll be able to provide cats.effect.{SyncIO,IO} instances directly to scalajs-react in places like component lifecycle callbacks, event handlers, etc. No additional imports required.

Guide with Cats Effect as default effect types

These are the instructions to use scalajs-react with cats.effect.{SyncIO,IO} as the default effects, meaning that in all cases where the return type would normally be a CallbackTo or an AsyncCallback you'll now get a SyncIO and IO respectively.

By default, the Callback classes won't even be on the classpath. If you include the callback module you'll get them back on the classpath and you'll be able to provide them directly to scalajs-react in places like component lifecycle callbacks, event handlers, etc. No additional imports required.

Add to sbt:

val ScalaJsReactVer = "2.0.0"

libraryDependencies ++= Seq(

  // Optionally include scalajs-react Callback classes
  // (Note: these need to come before "core-bundle-cats_effect")
  "com.github.japgolly.scalajs-react" %%% "callback"                 % ScalaJsReactVer,
  "com.github.japgolly.scalajs-react" %%% "callback-ext-cats"        % ScalaJsReactVer,
  "com.github.japgolly.scalajs-react" %%% "callback-ext-cats_effect" % ScalaJsReactVer,

  // Mandatory
  "com.github.japgolly.scalajs-react" %%% "core-bundle-cats_effect"  % ScalaJsReactVer,

  // Optional utils exclusive to scalajs-react
  "com.github.japgolly.scalajs-react" %%% "extra"                    % ScalaJsReactVer,

  // Optional extensions to `core` & `extra` for Monocle
  "com.github.japgolly.scalajs-react" %%% "extra-ext-monocle2"       % ScalaJsReactVer,
  "com.github.japgolly.scalajs-react" %%% "extra-ext-monocle3"       % ScalaJsReactVer,

  // For unit tests
  "com.github.japgolly.scalajs-react" %%% "test"                     % ScalaJsReactVer % Test,
)

Imports:

import japgolly.scalajs.react._ // automatically includes ReactCats._
import japgolly.scalajs.react.vdom.html_<^._
import japgolly.scalajs.react.ReactMonocle._

// Unit tests
import japgolly.scalajs.react.test._

Reference

These are all the modules meant for end-user selection.

Name Description
callback Lightweight but powerful effects classes:
AsyncCallback, Callback(To), CallbackOption
callback-ext-cats cats.MonadError instances for classes in the callback module
callback-ext-cats_effect For classes in the callback module:
  • cats.effect.{Sync,Async} instances
  • Conversions from/to cats.effect.{SyncIO,IO}
core Core scalajs-react functionality with {Callback,AsyncCallback} as the default effects
core-bundle-cats_effect Core scalajs-react functionality with cats.effect.{SyncIO,IO} as the default effects
(Note: callback module not included. Add as a separate dependency if required.)
core-bundle-cb_io Core scalajs-react functionality with Callback as the default sync effect and cats.effect.IO as the default async effect.
(Note: both callback and core-ext-cats_effect modules are included.)
core-ext-cats Extensions to the core module for Cats
core-ext-cats_effect Extensions to the core module for Cats Effect
extra Optional utils exclusive to scalajs-react. (details)
extra-ext-monocle2 Extensions to core & extra modules for Monocle v2
extra-ext-monocle3 Extensions to core & extra modules for Monocle v3
facade Scala.JS facades for React, ReactDOM, ReactDOMServer
facade-test Scala.JS facades for ReactTestUtils
test Utilities for testing React components

main modules

There are also other modules that are for internal/technical purposes and are transitive (indirect) dependencies. This is the full module diagram:

all modules