Try/catch around notification - failure should not abort processing!

.gitignore

@@ -1,3 +1,4 @@
 img/map-pins/colours/*.png
 img/map-pins/colours/*.svg
+node_modules
 

js/geocsv.js

@@ -266,7 +266,12 @@ var GeoCSV = {
      */
     error( m) {
       console.error( m);
-      document.getElementById( "error").innerText = m;
+      try {
+        document.getElementById( "error").innerText = m;
+      }
+      catch (anything) {
+        console.warn( "Error while trying to warn user: ", anything);
+      }
     },
 
     /**
@@ -274,7 +279,12 @@ var GeoCSV = {
      */
     message( m) {
       console.log( m);
-      document.getElementById( "message").innerText = m;
+      try {
+        document.getElementById( "message").innerText = m;
+      }
+      catch (anything) {
+        console.warn( "Error while trying to notify user: ", anything);
+      }
     }
   },
 

package-lock.json

@@ -0,0 +1,18 @@
+{
+  "name": "geocsv",
+  "version": "1.0.0",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "leaflet": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npmjs.org/leaflet/-/leaflet-1.6.0.tgz",
+      "integrity": "sha512-CPkhyqWUKZKFJ6K8umN5/D2wrJ2+/8UIpXppY7QDnUZW5bZL5+SEI2J7GBpwh4LIupOKqbNSQXgqmrEJopHVNQ=="
+    },
+    "papaparse": {
+      "version": "5.1.1",
+      "resolved": "https://registry.npmjs.org/papaparse/-/papaparse-5.1.1.tgz",
+      "integrity": "sha512-KPkW4GNQxunmYTeJIjHFrvilcNuHBWrfgbyvmagEmfGOA4hnP1WIkPbv4yABhj1Nam3as4w+7MBiI27BntwqVg=="
+    }
+  }
+}