Adding notes app in React Native

FastNotes/src/notes/NotesContext.tsx

@@ -0,0 +1,47 @@
+import React, { createContext, useContext, useMemo, useState } from "react";
+
+export type Note =
+{
+    id: string;
+    title: string;
+    content: string;
+};
+
+type NotesContextValue =
+{
+    notes: Note[];
+    addNote: (title: string, content: string) => void;
+};
+
+const NotesContext = createContext<NotesContextValue | undefined>(undefined);
+
+export function NotesProvider({ children }: { children: React.ReactNode })
+{
+    const [notes, setNotes] = useState<Note[]>
+    ([
+        { id: "1", title: "Second Note", content: "Follow up note - also hard coded" },
+        { id: "2", title: "First Note", content: "This is the first note currently hard coded" }
+    ]);
+
+    const addNote = (title: string, content: string) =>
+    {
+        const newNote: Note =
+        { 
+            id: Date.now().toString(),
+            title: title.trim() || "(Untitled)",
+            content: content.trim()
+        };
+      setNotes((prev) => [newNote, ...prev])  
+    };
+
+    const value = useMemo(() => ({ notes, addNote }), [notes]);
+
+    return <NotesContext.Provider value={value}>{children}</NotesContext.Provider>;
+}
+
+export function useNotes()
+{
+    const ctx = useContext(NotesContext);
+    if(!ctx) throw new Error("useNotes must be used inside NotesProvider");
+    return ctx;
+}