diff --git a/packages/components/src/components/SquiggleViewer/ExpressionViewer.tsx b/packages/components/src/components/SquiggleViewer/ExpressionViewer.tsx
index 8bd32292..cb40c509 100644
--- a/packages/components/src/components/SquiggleViewer/ExpressionViewer.tsx
+++ b/packages/components/src/components/SquiggleViewer/ExpressionViewer.tsx
@@ -298,7 +298,9 @@ 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/squiggle-lang/src/rescript/FR/FR_Dict.res b/packages/squiggle-lang/src/rescript/FR/FR_Dict.res
index d135717c..77ca49a7 100644
--- a/packages/squiggle-lang/src/rescript/FR/FR_Dict.res
+++ b/packages/squiggle-lang/src/rescript/FR/FR_Dict.res
@@ -71,7 +71,8 @@ let library = [
         ~inputs=[FRTypeArray(FRTypeDict(FRTypeAny))],
         ~run=(inputs, _, _) => {
           switch inputs {
-          | [IEvArray(dicts)] => dicts
+          | [IEvArray(dicts)] =>
+            dicts
             ->Belt.Array.map(dictValue =>
               switch dictValue {
               | IEvRecord(dict) => dict
diff --git a/packages/squiggle-lang/src/rescript/FR/FR_Pointset.res b/packages/squiggle-lang/src/rescript/FR/FR_Pointset.res
index ee4f7ca8..a12164bd 100644
--- a/packages/squiggle-lang/src/rescript/FR/FR_Pointset.res
+++ b/packages/squiggle-lang/src/rescript/FR/FR_Pointset.res
@@ -7,7 +7,8 @@ let requiresNamespace = true
 let inputsToDist = (inputs: array<Reducer_T.value>, xyShapeToPointSetDist) => {
   // TODO - rewrite in more functional/functor-based style
   switch inputs {
-  | [IEvArray(items)] => items
+  | [IEvArray(items)] =>
+    items
     ->Belt.Array.map(item =>
       switch item {
       | IEvRecord(map) => {
diff --git a/packages/squiggle-lang/src/rescript/FunctionRegistry/FunctionRegistry_Core.res b/packages/squiggle-lang/src/rescript/FunctionRegistry/FunctionRegistry_Core.res
index 5d606bb8..9683147f 100644
--- a/packages/squiggle-lang/src/rescript/FunctionRegistry/FunctionRegistry_Core.res
+++ b/packages/squiggle-lang/src/rescript/FunctionRegistry/FunctionRegistry_Core.res
@@ -83,15 +83,12 @@ module FRType = {
     | (FRTypeNumeric, IEvNumber(_)) => true
     | (FRTypeNumeric, IEvDistribution(Symbolic(#Float(_)))) => true
     | (FRTypeLambda, IEvLambda(_)) => true
-    | (FRTypeArray(intendedType), IEvArray(elements)) => elements->Belt.Array.every(v =>
-        matchWithValue(intendedType, v)
-      )
+    | (FRTypeArray(intendedType), IEvArray(elements)) =>
+      elements->Belt.Array.every(v => matchWithValue(intendedType, v))
     | (FRTypeDict(r), IEvRecord(map)) =>
       map->Belt.Map.String.valuesToArray->Belt.Array.every(v => matchWithValue(r, v))
-    | (FRTypeRecord(recordParams), IEvRecord(map)) => recordParams->Belt.Array.every(((
-        name,
-        input,
-      )) => {
+    | (FRTypeRecord(recordParams), IEvRecord(map)) =>
+      recordParams->Belt.Array.every(((name, input)) => {
         switch map->Belt.Map.String.get(name) {
         | Some(v) => matchWithValue(input, v)
         | None => false