1 files changed, 20 insertions, 0 deletions
diff --git a/app/assets/javascripts/lib/utils/downloader.js b/app/assets/javascripts/lib/utils/downloader.js
new file mode 100644
index 00000000000..2297f5f90ce
--- /dev/null
+++ b/app/assets/javascripts/lib/utils/downloader.js
@@ -0,0 +1,20 @@
+/**
+ * Helper function to trigger a download.
+ *
+ * - If the `fileName` is `_blank` it will open the file in a new tab.
+ * - If `fileData` is provided, it will inline the content and use data URLs to
+ *   download the file. In this case the `url` property will be ignored. Please
+ *   note that `fileData` needs to be Base64 encoded.
+ */
+export default ({ fileName, url, fileData }) => {
+  let href = url;
+
+  if (fileData) {
+    href = `data:text/plain;base64,${fileData}`;
+  }
+
+  const anchor = document.createElement('a');
+  anchor.download = fileName;
+  anchor.href = href;
+  anchor.click();
+};