diff --git a/packages/components/src/components/SquiggleViewer/ExpressionViewer.tsx b/packages/components/src/components/SquiggleViewer/ExpressionViewer.tsx
index 8bd32292..261c189b 100644
--- a/packages/components/src/components/SquiggleViewer/ExpressionViewer.tsx
+++ b/packages/components/src/components/SquiggleViewer/ExpressionViewer.tsx
@@ -2,7 +2,7 @@ import React, { useContext } from "react";
 import { SqDistributionTag, SqValue, SqValueTag } from "@quri/squiggle-lang";
 import { NumberShower } from "../NumberShower";
 import { DistributionChart, defaultPlot, makePlot } from "../DistributionChart";
-import { FunctionChart, FunctionChartSettings } from "../FunctionChart";
+import { FunctionChart } from "../FunctionChart";
 import clsx from "clsx";
 import { VariableBox } from "./VariableBox";
 import { ItemSettingsMenu } from "./ItemSettingsMenu";
@@ -298,7 +298,7 @@ export const ExpressionViewer: React.FC<Props> = ({ value, width }) => {
           {() => (
             <div>
               <span>No display for type: </span>{" "}
-              <span className="font-semibold text-slate-600">{value.tag}</span>
+              <span className="font-semibold text-slate-600">{(value as {tag: string}).tag}</span>
             </div>
           )}
         </VariableList>
diff --git a/packages/components/src/lib/hooks/useSquiggle.ts b/packages/components/src/lib/hooks/useSquiggle.ts
index 9878206e..eba85eaf 100644
--- a/packages/components/src/lib/hooks/useSquiggle.ts
+++ b/packages/components/src/lib/hooks/useSquiggle.ts
@@ -67,15 +67,17 @@ export const useSquiggle = (args: SquiggleArgs) => {
     );
   }, [result, onChange]);
 
-  useEffect(() => {
-    return () => {
-      if (result.needsClean) args.project.clean(result.sourceName);
-      if (args.project.getSource(importSourceName(result.sourceName)))
-        args.project.clean(result.sourceName);
-    };
-  }, 
-  // eslint-disable-next-line react-hooks/exhaustive-deps
-  []);
+  useEffect(
+    () => {
+      return () => {
+        if (result.needsClean) args.project.clean(result.sourceName);
+        if (args.project.getSource(importSourceName(result.sourceName)))
+          args.project.clean(result.sourceName);
+      };
+    },
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+    []
+  );
 
   return result;
 };