add function to guess type and decode

packages/osc/src/index.ts

@@ -1,3 +1,17 @@
+import { bundleFromBuffer } from './bundle';
+import { messageFromBuffer } from './message';
+import { OSCBundle, OSCMessage } from './models';
+
 export * from './models';
 export * from './message';
 export * from './bundle';
+
+export function fromBuffer(bytes: Uint8Array): [OSCBundle | OSCMessage | undefined, Uint8Array | undefined] {
+    if (bytes[0] === 47) { // starts with '/'
+        return messageFromBuffer(bytes);
+    } else if (bytes[0] === 35) { // starts with '#'
+        return bundleFromBuffer(bytes)
+    } else {
+        throw new Error('bytes do not look like an OSC message or bundle');
+    }
+}