<img alt="React to Angular: The easiest way to use React components in Angular 1" src="https://raw.githubusercontent.com/coatue-oss/react2angular/master/logo.png" width="400px" />

# react2angular [![NPM](https://img.shields.io/npm/v/react18-react2angular.svg?style=flat-square)](https://www.npmjs.com/package/react18-react2angular) [![Apache2](https://img.shields.io/npm/l/react2angular.svg?style=flat-square)](https://opensource.org/licenses/Apache2)

> The easiest way to embed React components in Angular 1 apps! (opposite of [angular2react](https://github.com/coatue-oss/angular2react))

> <b>this version can be used with React 18 and probably up</b>

## Installation

```sh
# Using Yarn:
yarn add react2angular react react-dom prop-types

# Or, using NPM:
npm install react2angular react react-dom prop-types --save
```

## Usage

### 1. Create a React component

```js
import { Component } from "react";

class MyComponent extends Component {
  render() {
    return (
      <div>
        <p>FooBar: {this.props.fooBar}</p>
        <p>Baz: {this.props.baz}</p>
      </div>
    );
  }
}
```

### 2. Expose it to Angular

```js
import { react2angular } from "react2angular";

angular
  .module("myModule", [])
  .component("myComponent", react2angular(MyComponent, ["fooBar", "baz"]));
```

Note: If you defined [`propTypes`](https://facebook.github.io/react/docs/typechecking-with-proptypes.html) on your component, they will be used to compute component's bindings, and you can omit the 2nd argument:

```js
...
  .component('myComponent', react2angular(MyComponent))
```

If `propTypes` are defined and you passed in a 2nd argument, the argument will override `propTypes`.

### 3. Use it in your Angular 1 code

```html
<my-component foo-bar="3" baz="'baz'"></my-component>
```

Note: All React props are converted to AngularJS one-way bindings. If you are passing functions into your React component, they need to be passed as a function ref, rather than as an invokable expression. Keeping an existing AngularJS-style expression will result in infinite loops as the function re-evaluates on each digest loop.

## Dependency Injection

It's easy to pass services/constants/etc. to your React component: just pass them in as the 3rd argument, and they will be available in your component's Props. For example:

```js
import { Component } from "react";
import { react2angular } from "react2angular";

class MyComponent extends Component {
  state = {
    data: "",
  };
  componentDidMount() {
    this.props.$http
      .get("/path")
      .then((res) => this.setState({ data: res.data }));
  }
  render() {
    return (
      <div>
        {this.props.FOO}
        {this.state.data}
      </div>
    );
  }
}

angular
  .module("myModule", [])
  .constant("FOO", "FOO!")
  .component("myComponent", react2angular(MyComponent, [], ["$http", "FOO"]));
```

Note: If you have an injection that matches the name of a prop, then the value will be resolved with the injection, not the prop.

## Tests

```sh
npm test
```

## License

Apache2
