try absurd-sql, which fails in browser with: SyntaxError: Cannot use import statement outside a module (at registerSQLWorker.js...

src/registerSQLWorker.js

@@ -0,0 +1,28 @@
+import initSqlJs from '@jlongster/sql.js';
+import { SQLiteFS } from 'absurd-sql';
+import IndexedDBBackend from 'absurd-sql/dist/indexeddb-backend';
+
+async function run() {
+  console.log("----- initSqlJs");
+  let SQL = await initSqlJs({ locateFile: file => file });
+  let sqlFS = new SQLiteFS(SQL.FS, new IndexedDBBackend());
+  SQL.register_for_idb(sqlFS);
+
+  SQL.FS.mkdir('/sql');
+  SQL.FS.mount(sqlFS, {}, '/sql');
+
+  const path = '/sql/db.sqlite';
+  if (typeof SharedArrayBuffer === 'undefined') {
+    let stream = SQL.FS.open(path, 'a+');
+    await stream.node.contents.readIfFallback();
+    SQL.FS.close(stream);
+  }
+
+  let db = new SQL.Database(path, { filename: true });
+  // You might want to try `PRAGMA page_size=8192;` too!
+  db.exec(`
+    PRAGMA journal_mode=MEMORY;
+  `);
+  console.log("----- db", db);
+}
+run();