Conditionally truncate category string (#1206)

* maybe truncate string

* add string formatting to test

* correct import

* destructuring

* add maxlength

* test

* Respond to feedback from @bkmartinjr

Co-authored-by: Matt Weiden <538456+mweiden@users.noreply.github.com>

client/src/util/maybeTruncateString.js

@@ -0,0 +1,18 @@
+const maybeTruncateString = (str, maxLength) => {
+
+  let truncatedString = null;
+  if (
+    str.length > maxLength
+  ) {
+    truncatedString = `${str.slice(
+      0,
+      maxLength / 2
+    )}…${str.slice(
+      -maxLength / 2
+    )}`;
+  } 
+
+  return truncatedString || str;
+}
+
+export default maybeTruncateString;