Add helper script

scripts/decompress.js

@@ -0,0 +1,18 @@
+const Pako = require('pako');
+
+// get file from command line
+const file = process.argv[2];
+
+// read file
+const fs = require('fs');
+const data = fs.readFileSync(file);
+const result = Pako.inflate(data, { to: 'string' });
+
+// write file with suffix .decompressed
+const path = require('path');
+const basename = path.basename(file);
+const extname = path.extname(file);
+const filename = basename.slice(0, -extname.length);
+const newFile = `${filename}.decompressed${extname}`;
+
+fs.writeFileSync(newFile, result);