feat(webapp): import resource UI

packages/webapp/src/components/Dropzone/create-safe-context.tsx

@@ -0,0 +1,25 @@
+import React, { createContext, useContext } from 'react';
+
+export function createSafeContext<ContextValue>(errorMessage: string) {
+  const Context = createContext<ContextValue | null>(null);
+
+  const useSafeContext = () => {
+    const ctx = useContext(Context);
+
+    if (ctx === null) {
+      throw new Error(errorMessage);
+    }
+
+    return ctx;
+  };
+
+  const Provider = ({
+    children,
+    value,
+  }: {
+    value: ContextValue;
+    children: React.ReactNode;
+  }) => <Context.Provider value={value}>{children}</Context.Provider>;
+
+  return [Provider, useSafeContext] as const;
+}