feat: Improve API error handling (#44) - fix #43

lib/processor.js

@@ -163,11 +163,32 @@ function processFile (file, options) {
   const client = getContentfulClient(accessToken, spaceId, host)
 
   return client.getEntries(query)
+    .catch(error => decorateAPIError(error, file))
     .then(entries => mapEntriesForFile(entries.items, file, options))
     .then(entries => processEntriesForFile(file, entries, options))
     .then(entries => getCommonContentForSpace(entries, options))
 }
 
+/**
+ * Decorate the error coming from a failed
+ * API response with the hint that the API failed
+ *
+ * This function also throws an error to
+ * propagate the promise chain
+ *
+ * @param {Object} error error thrown by the API call
+ * @param {fiel}   file  file that triggered the API call
+ *
+ * @throws {Error}
+ *
+ */
+function decorateAPIError (error, file) {
+  throw new Error(
+    `Could not process file ${file._fileName}:
+    API error response: ${error.message}`
+  )
+}
+
 module.exports = {
   processFile
 }