Don't throw exception if no valid file found; instead log it, and return nil.

src/scot/weft/i18n/core.clj

@@ -133,7 +133,7 @@
   * `default-locale` should be a locale specifier to use if no acceptable locale can be
   identified.
 
-  Returns a map of message keys to strings."
+  Returns a map of message keys to strings; if no useable file is found, returns nil."
   {:doc/format :markdown}
   [^String accept-language-header ^String resource-path ^String default-locale]
   (let [file-path (first
@@ -143,14 +143,18 @@
                         #(find-language-file-name % resource-path)
                         (acceptable-languages accept-language-header))))]
     (timbre/debug (str "Found i18n file at '" file-path "'"))
-    (read-string
-      (slurp
-        (or
-          file-path
-          (.getAbsolutePath
-            (io/file
-              resource-path
-              (str default-locale ".edn"))))))))
+    (try
+      (read-string
+        (slurp
+          (or
+            file-path
+            (.getAbsolutePath
+              (io/file
+                resource-path
+                (str default-locale ".edn"))))))
+      (catch Exception any
+        (timbre/error (str "Failed to load internationalisation because " (.getMessage any)))
+        nil))))
 
 
 (def get-messages