diff --git a/hyperglass/ui/pages/_app.tsx b/hyperglass/ui/pages/_app.tsx
index c817455..482afa5 100644
--- a/hyperglass/ui/pages/_app.tsx
+++ b/hyperglass/ui/pages/_app.tsx
@@ -1,18 +1,19 @@
 import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
-import { Meta, Layout } from '~/components';
-import { HyperglassProvider } from '~/context';
-import * as config from '../hyperglass.json';
-
 import type { AppProps } from 'next/app';
+import { Layout, Meta } from '~/components';
+import { HyperglassProvider } from '~/context';
 import type { Config } from '~/types';
 
+// Declare imported JSON type to avoid type errors when file is not present (testing).
+const config = (await import('../hyperglass.json')) as unknown as Config;
+
 const queryClient = new QueryClient();
 
 const App = (props: AppProps): JSX.Element => {
   const { Component, pageProps } = props;
   return (
     <QueryClientProvider client={queryClient}>
-      <HyperglassProvider config={config as unknown as Config}>
+      <HyperglassProvider config={config}>
         <Meta />
         <Layout>
           <Component {...pageProps} />
diff --git a/hyperglass/ui/pages/_document.tsx b/hyperglass/ui/pages/_document.tsx
index c1e12d2..09869d7 100644
--- a/hyperglass/ui/pages/_document.tsx
+++ b/hyperglass/ui/pages/_document.tsx
@@ -1,13 +1,15 @@
 import fs from 'fs';
-import Document, { Html, Head, Main, NextScript } from 'next/document';
 import { ColorModeScript } from '@chakra-ui/react';
-import { CustomJavascript, CustomHtml, Favicon } from '~/elements';
+import Document, { Html, Head, Main, NextScript } from 'next/document';
+import { CustomHtml, CustomJavascript, Favicon } from '~/elements';
 import { googleFontUrl } from '~/util';
 import favicons from '../favicon-formats';
-import config from '../hyperglass.json';
 
 import type { DocumentContext, DocumentInitialProps } from 'next/document';
-import type { ThemeConfig } from '~/types';
+import type { Config, ThemeConfig } from '~/types';
+
+// Declare imported JSON type to avoid type errors when file is not present (testing).
+const config = (await import('../hyperglass.json')) as unknown as Config;
 
 interface DocumentExtra
   extends DocumentInitialProps,