refactor(plugin-flow-builder): use Record<keyof T, string> to type co…

…ntents object

packages/botonic-plugin-flow-builder/src/webview/contents-context.ts

@@ -2,11 +2,34 @@ import { createContext } from 'react'
 
 import { WebviewContentsContextType } from './types'
 
-export const WebviewContentsContext = createContext<
-  WebviewContentsContextType<unknown>
->({
-  getTextContent: () => '',
-  getImageSrc: () => '',
-  setCurrentLocale: () => undefined,
-  contents: {},
-})
+/* 
+   Define a generic type parameter for your context
+   WebviewContentsContext is a function that returns a context object with the type parameter T
+   It is necessary to create the context outside the component
+   e.g. 
+
+   interface WebviewContents {
+      textIntro: string
+      image2: string
+      headerWebview: string
+      image: string
+    }
+
+    export const MyWebviewContentsContext = WebviewContentsContext<WebviewContents>()
+
+    Then you can use it in your component like this:
+    <MyWebviewContentsContext.Provider value={webviewContentsContext}>
+    ...// your components
+    </MyWebviewContentsContext.Provider>
+
+    In your components you can use the context to read contents like this:
+
+    const { contents } = useContext(MyWebviewContentsContext)
+*/
+export const WebviewContentsContext = <T>() =>
+  createContext<WebviewContentsContextType<T>>({
+    getTextContent: () => '',
+    getImageSrc: () => '',
+    setCurrentLocale: () => undefined,
+    contents: {} as Record<keyof T, string>,
+  })