diff --git a/demo/js/butterchurnOptions.ts b/demo/js/butterchurnOptions.ts
index ac10e999..602a70b5 100644
--- a/demo/js/butterchurnOptions.ts
+++ b/demo/js/butterchurnOptions.ts
@@ -20,7 +20,7 @@ function presetNameFromURL(url: string) {
   }
 }
 
-async function loadButterchurnPresetMapURL(url) {
+async function loadButterchurnPresetMapURL(url: string) {
   const resp = await fetch(url);
   const namesToPresetUrls = await resp.json();
   return Object.keys(namesToPresetUrls).map((name: string) => {
diff --git a/modern/src/Dashboard.tsx b/modern/src/Dashboard.js
similarity index 98%
rename from modern/src/Dashboard.tsx
rename to modern/src/Dashboard.js
index 65cf7a2f..1ee97803 100644
--- a/modern/src/Dashboard.tsx
+++ b/modern/src/Dashboard.js
@@ -101,7 +101,7 @@ export default function() {
   const sortDecending = (a, b) => (b[sortKey] < a[sortKey] ? 1 : -1);
   const sortFunction = sortDirection === "ASC" ? sortAscending : sortDecending;
 
-  let filterFunction: (string) => boolean = () => true;
+  let filterFunction = () => true;
   if (searchQuery) {
     const normalizedQuery = searchQuery.toLowerCase();
 
diff --git a/tsconfig.json b/tsconfig.json
index 8dda04ee..a7279681 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -12,17 +12,6 @@
     "noEmit": true,
     "pretty": true
   },
-  "include": [
-    "js/**/*.js",
-    "js/**/*.ts",
-    "js/**/*.tsx",
-    "modern/**/*.ts",
-    "modern/**/*.tsx"
-  ],
-  "exclude": [
-    "node_modules",
-    "**/*.spec.ts",
-    "demo/built",
-    "modern/src/Dashboard.tsx"
-  ]
+  "include": ["**/*.ts", "**/*.tsx"],
+  "exclude": ["node_modules", "demo/built"]
 }