Changed export format extension to JEX and made it a non-compressed tar file

ReactNativeClient/lib/fs-driver-base.js

@@ -0,0 +1,24 @@
+class FsDriverBase {
+
+	async isDirectory(path) {
+		const stat = await this.stat(path);
+		return !stat ? false : stat.isDirectory();
+	}
+
+	async readDirStatsHandleRecursion_(basePath, stat, output, options) {
+		if (options.recursive && stat.isDirectory()) {
+			const subPath = basePath + '/' + stat.path;
+			const subStats = await this.readDirStats(subPath, options);
+			for (let j = 0; j < subStats.length; j++) {
+				const subStat = subStats[j];
+				subStat.path = stat.path + '/' + subStat.path;
+				output.push(subStat);
+			}
+		}
+
+		return output;
+	}
+
+}
+
+module.exports = FsDriverBase;