fix(core): fix caching issues

scripts/postinstall.ts

@@ -0,0 +1,15 @@
+// This file takes care of some postinstall actions like clearing the TypeScript cache.
+import * as smartfile from 'smartfile';
+import * as path from 'path';
+
+const run = async () => {
+  const tsCacheDir = path.join(__dirname, '../tscache');
+  const tsCacheFiles: string[] = await smartfile.fs.listFolders(tsCacheDir) as any;
+  for(const dir of tsCacheFiles) {
+    console.log(`Removing cache directory ${dir}`);
+    let dirToRemove = path.join(tsCacheDir, dir);
+    await smartfile.fs.removeSync(dirToRemove);
+  }
+}
+
+run()