Throw exception immediately when document filename is not found

1 files changed, 14 insertions, 14 deletions

diff --git a/lib/docx/docx-reader.js b/lib/docx/docx-reader.js
index 898da1d..9570dd5 100644
--- a/lib/docx/docx-reader.js
+++ b/lib/docx/docx-reader.js
@@ -61,22 +61,18 @@ function read(docxFile, input) {
         };
     }).then(function(result) {
         var documentFilename = findDocumentFilename(docxFile, result.fileRelationships);
-        if (documentFilename) {
-            return readXmlFileWithBody(documentFilename, result, function(bodyReader, xml) {
-                return result.notes.flatMap(function(notes) {
-                    return result.comments.flatMap(function(comments) {
-                        var reader = new DocumentXmlReader({
-                            bodyReader: bodyReader,
-                            notes: notes,
-                            comments: comments
-                        });
-                        return reader.convertXmlToDocument(xml);
+        return readXmlFileWithBody(documentFilename, result, function(bodyReader, xml) {
+            return result.notes.flatMap(function(notes) {
+                return result.comments.flatMap(function(comments) {
+                    var reader = new DocumentXmlReader({
+                        bodyReader: bodyReader,
+                        notes: notes,
+                        comments: comments
                     });
+                    return reader.convertXmlToDocument(xml);
                 });
             });
-        } else {
-            throw new Error("Could not find main document part. Are you sure this is a valid .docx file?");
-        }
+        });
     });
 }
 
@@ -89,7 +85,11 @@ function findDocumentFilename(docxFile, relationships) {
     var validTargets = normalisedTargets.filter(function(target) {
         return docxFile.exists(target);
     });
-    return validTargets[0];
+    if (validTargets.length === 0) {
+        throw new Error("Could not find main document part. Are you sure this is a valid .docx file?");
+    } else {
+        return validTargets[0];
+    }
 }
 
 function stripPrefix(value, prefix) {