Initial working version

lib/index.js

@@ -0,0 +1,25 @@
+const parser = require('scratch-parser');
+
+const sb2 = require('./sb2');
+const sb3 = require('./sb3');
+
+module.exports = function (buffer, callback) {
+    parser(buffer, false, (err, project) => {
+        if (err) return callback(err);
+
+        // Flatten array
+        project = project[0];
+
+        // Push project object to the appropriate analysis handler
+        switch (project.projectVersion) {
+        case 2:
+            sb2(project, callback);
+            break;
+        case 3:
+            sb3(project, callback);
+            break;
+        default:
+            throw new Error('Unsupported project version');
+        }
+    });
+};