JAVASCRIPT

window.reactnativewebview.postmessage

// Send message from react native
webviewRef.current.injectJavaScript(JSON.stringify({msg: "The message here"}))

// Recive message from webview
document.addEventListener('message', e => {
    console.log(JSON.stringify(e.data))
})

// Send message from webview
window.ReactNativeWebView.postmessage({message: "Message here"});