diff --git a/packages/squiggle-lang/src/rescript/Reducer/Reducer_MathJs/Reducer_MathJs_Parse.res b/packages/squiggle-lang/src/rescript/Reducer/Reducer_MathJs/Reducer_MathJs_Parse.res
index 4c92f479..26484cf4 100644
--- a/packages/squiggle-lang/src/rescript/Reducer/Reducer_MathJs/Reducer_MathJs_Parse.res
+++ b/packages/squiggle-lang/src/rescript/Reducer/Reducer_MathJs/Reducer_MathJs_Parse.res
@@ -47,7 +47,7 @@ let parse = (expr: string): result<node, errorValue> =>
   | Js.Exn.Error(obj) => REJs(Js.Exn.message(obj), Js.Exn.name(obj))->Error
   }
 
-type mjNode =
+type mathJsNode =
   | MjAccessorNode(accessorNode)
   | MjArrayNode(arrayNode)
   | MjConstantNode(constantNode)
@@ -72,7 +72,7 @@ let castNodeType = (node: node) =>
   | _ => RETodo(`Argg, unhandled MathJsNode: ${node["type"]}`)->Error
   }
 
-let rec show = (mjNode: mjNode): string => {
+let rec show = (mathJsNode: mathJsNode): string => {
   let showValue = (a: 'a): string =>
     if Js.typeof(a) == "string" {
       `'${Js.String.make(a)}'`
@@ -103,7 +103,7 @@ let rec show = (mjNode: mjNode): string => {
     ->Belt.Array.map(each => showResult(each->castNodeType))
     ->Js.String.concatMany("")
 
-  switch mjNode {
+  switch mathJsNode {
   | MjAccessorNode(aNode) => `${aNode["object"]->showMathJsNode}[${aNode["index"]->showIndexNode}]`
   | MjArrayNode(aNode) => `[${aNode["items"]->showNodeArray}]`
   | MjConstantNode(cNode) => cNode["value"]->showValue
@@ -115,9 +115,9 @@ let rec show = (mjNode: mjNode): string => {
   | MjSymbolNode(sNode) => sNode["name"]
   }
 }
-and showResult = (rmjnode: result<mjNode, errorValue>): string =>
-  switch rmjnode {
+and showResult = (rMathJsNode: result<mathJsNode, errorValue>): string =>
+  switch rMathJsNode {
   | Error(e) => showError(e)
-  | Ok(mjNode) => show(mjNode)
+  | Ok(mathJsNode) => show(mathJsNode)
   }
 and showMathJsNode = node => node->castNodeType->showResult
diff --git a/packages/squiggle-lang/src/rescript/Reducer/Reducer_MathJs/Reducer_MathJs_ToExpression.res b/packages/squiggle-lang/src/rescript/Reducer/Reducer_MathJs/Reducer_MathJs_ToExpression.res
index 1664877b..e7a7d805 100644
--- a/packages/squiggle-lang/src/rescript/Reducer/Reducer_MathJs/Reducer_MathJs_ToExpression.res
+++ b/packages/squiggle-lang/src/rescript/Reducer/Reducer_MathJs/Reducer_MathJs_ToExpression.res
@@ -9,8 +9,8 @@ type expression = ExtressionT.expression
 type expressionValue = ExpressionValue.expressionValue
 type errorValue = ErrorValue.errorValue
 
-let rec fromNode = (mjnode: Parse.node): result<expression, errorValue> =>
-  Parse.castNodeType(mjnode)->Result.flatMap(typedMjNode => {
+let rec fromNode = (mathJsNode: Parse.node): result<expression, errorValue> =>
+  Parse.castNodeType(mathJsNode)->Result.flatMap(typedMathJsNode => {
     let fromNodeList = (nodeList: list<Parse.node>): result<list<expression>, 'e> =>
       Belt.List.reduceReverse(nodeList, Ok(list{}), (racc, currNode) =>
         racc->Result.flatMap(acc =>
@@ -52,9 +52,9 @@ let rec fromNode = (mjnode: Parse.node): result<expression, errorValue> =>
       let rpropertyCodeList = Belt.List.reduceReverse(
         iNode["dimensions"]->Belt.List.fromArray,
         Ok(list{}),
-        (racc, currentPropertyMjNode) =>
+        (racc, currentPropertyMathJsNode) =>
           racc->Result.flatMap(acc =>
-            fromNode(currentPropertyMjNode)->Result.map(propertyCode => list{propertyCode, ...acc})
+            fromNode(currentPropertyMathJsNode)->Result.map(propertyCode => list{propertyCode, ...acc})
           ),
       )
       rpropertyCodeList->Result.map(propertyCodeList => ExtressionT.EList(propertyCodeList))
@@ -70,7 +70,7 @@ let rec fromNode = (mjnode: Parse.node): result<expression, errorValue> =>
       })
     }
 
-    switch typedMjNode {
+    switch typedMathJsNode {
     | MjArrayNode(aNode) =>
       aNode["items"]->Belt.List.fromArray->fromNodeList->Result.map(list => ExtressionT.EList(list))
     | MjConstantNode(cNode) =>