Consolidate parser args

client/src/mvc/dataset/data.js

@@ -143,6 +143,9 @@ var TabularDatasetChunkedView = Backbone.View.extend({
         this.loading_chunk = false;
         // Configure delimiter for parsing data
         this.delimiter = this.model?.attributes?.file_ext === "csv" ? "," : "\t";
+        this.parseArgs = {
+            delimiter: this.delimiter,
+        };
         // load trackster button
         new TabularButtonTracksterView({
             model: options.model,
@@ -316,9 +319,7 @@ var TabularDatasetChunkedView = Backbone.View.extend({
         var data_table = this.$el.find("table");
         let parsedChunk = [];
         try {
-            parsedChunk = parse(chunk.ck_data, {
-                delimiter: this.delimiter,
-            });
+            parsedChunk = parse(chunk.ck_data, this.parseArgs);
         } catch (error) {
             // If this blows up it's likely data in a comment or header line
             // (e.g. VCF files) so just split it by newline first then parse
@@ -326,9 +327,7 @@ var TabularDatasetChunkedView = Backbone.View.extend({
             parsedChunk = chunk.ck_data.trim().split("\n");
             parsedChunk = parsedChunk.map((line) => {
                 try {
-                    return parse(line, {
-                        delimiter: this.delimiter,
-                    })[0];
+                    return parse(line, this.parseArgs)[0];
                 } catch (error) {
                     // Failing lines get passed through intact for row-level
                     // rendering/parsing.