diff --git a/rollup.config.mjs b/rollup.config.mjs
index e0a46f1..26ab5a4 100644
--- a/rollup.config.mjs
+++ b/rollup.config.mjs
@@ -37,6 +37,7 @@ export default {
         if (/\/mathjs\//.test(id)) {
           code = code.replace('export const path = "expression.transform"', '');
         }
+        code = code.replace(/\/\*\*.*?\*\//gms, ''); // strip comments since they can have stray imports/exports
         return code;
       },
     },
diff --git a/src/schema/data-types.ts b/src/schema/data-types.ts
index aee9a2c..f36320a 100644
--- a/src/schema/data-types.ts
+++ b/src/schema/data-types.ts
@@ -103,17 +103,17 @@ export function convertMatomoTypeToLooker(value: any, matomoType: string) {
 export function mapMatomoAggregationTypeToLooker(matomoAggregation: string): AggregationType|undefined {
   switch (matomoAggregation.toLowerCase()) {
     case 'avg':
-      return AggregationType.AVG;
+      return cc.AggregationType.AVG;
     case 'count': // TODO: do we really need to support count and count_distinct? does not seem to apply to matomo
-      return AggregationType.COUNT;
+      return cc.AggregationType.COUNT;
     case 'count_distinct':
-      return AggregationType.COUNT_DISTINCT;
+      return cc.AggregationType.COUNT_DISTINCT;
     case 'max':
-      return AggregationType.SUM;
+      return cc.AggregationType.SUM;
     case 'min':
-      return AggregationType.MIN;
+      return cc.AggregationType.MIN;
     case 'sum':
-      return AggregationType.SUM;
+      return cc.AggregationType.SUM;
     default:
       log(`unknown matomo aggregation type encountered: ${matomoAggregation}`);
       return undefined;
diff --git a/src/schema/report-metadata.ts b/src/schema/report-metadata.ts
index d70a2d8..de68086 100644
--- a/src/schema/report-metadata.ts
+++ b/src/schema/report-metadata.ts
@@ -111,7 +111,7 @@ function addMetric(
   if (lookerFormula) {
     field
       .setFormula(lookerFormula)
-      .setAggregation(AggregationType.AUTO);
+      .setAggregation(cc.AggregationType.AUTO);
   } else if (aggregationType) {
     field.setAggregation(aggregationType);
   } else {