rescript-react-compat

> An alternative upgrade path for ReasonReact

Installation

``console
$ yarn add rescript-react-compat
`

or

`console
$ npm install --save rescript-react-compat
`

Then add rescript-react-compat to your bsconfig.json bs-dependencies field.

ReactCompat.useRecordApi

Enables you to wrap your existing ReasonReact.statelessComponent and ReasonReact.reducerComponent through a React hook.

`reason
[@react.component]
let make = () => {
ReactCompat.useRecordApi({
...ReactCompat.component,
render: _ =>



})
}
`

$3

#### Stateless components

For implementation files (.re)

`diff
-let component = ReasonReact.statelessComponent("MyComponent");

+[@react.component]
- let make = _ => {
+ let make = () => {
+ ReactCompat.useRecordApi(
{
- ...component,
+ ...ReactCompat.component,
render: _ =>



}
+ )
}
`

For interface files (.rei)

`diff

+[@react.component]
- let make = 'a =>
+ let make = unit =>
- ReasonReact.component(
- ReasonReact.stateless,
- ReasonReact.noRetainedProps,
- ReasonReact.actionless
- );
+ React.element;
`

#### Reducer components

For implementation files (.re)

`diff
type action = | Tick;

type state = {count: int};

-let component = ReasonReact.reducerComponent("MyComponent");

+[@react.component]
- let make = _ => {
+ let make = () => {
+ ReactCompat.useRecordApi(
{
- ...component,
+ ...ReactCompat.component,
/ some lifecycle /
render: _ =>



}
+ )
}
`

You'll also need to rename:

- ReasonReact.Update -> Update
- ReasonReact.UpdateWithSideEffects -> UpdateWithSideEffects
- ReasonReact.SideEffects -> SideEffects
- ReasonReact.NoUpdate -> NoUpdate

For interface files (.rei)

`diff
-type state;

-type action;

+[@react.component]
- let make = 'a =>
+ let make = unit =>
- ReasonReact.component(
- state,
- ReasonReact.noRetainedProps,
- action
- );
+ React.element;
``

Acknowledgments

Thnks @rickyvetter for the original idea and help through the process