feat: allows upload through Local API

src/uploads/saveBufferToFile.ts

@@ -0,0 +1,21 @@
+import { Readable } from 'stream';
+import fs from 'fs';
+
+/**
+ * Save buffer data to a file.
+ * @param {Buffer} buffer - buffer to save to a file.
+ * @param {string} filePath - path to a file.
+ */
+const saveBufferToFile = async (buffer: Buffer, filePath: string): Promise<void> => {
+  // Setup readable stream from buffer.
+  let streamData = buffer;
+  const readStream = new Readable();
+  readStream._read = () => {
+    readStream.push(streamData);
+    streamData = null;
+  };
+  // Setup file system writable stream.
+  return fs.writeFileSync(filePath, buffer);
+};
+
+export default saveBufferToFile;