Creé tablas en web_sql (navegador), logré crear tablas e insertarles datos cuando intento hacer una consulta para seleccionar algo que falló. Lo que estoy tratando de hacer es recibir datos de la promesa en js:

Doc: https://api.flutter.dev/flutter/dart-js_util/promiseToFuture.html Pero recibo este error:

 Error: Expected a value of type 'JsObject', but got one of type 'JavaScriptObject' at Object.throw_ [as throw] (http://localhost:55897/dart_sdk.js:5061:11) at Object.castError (http://localhost:55897/dart_sdk.js:5020:15) at Object.cast [as as] (http://localhost:55897/dart_sdk.js:5345:17) at Function.as_C [as as] (http://localhost:55897/dart_sdk.js:4966:19) at sqflite_web_impl.SqfliteWebDatabase.new.rawQuery (http://localhost:55897/packages/sqflite_web/src/sqflite_web_impl.dart.lib.js:254:84) at rawQuery.next (<anonymous>) at http://localhost:55897/dart_sdk.js:38640:33 at _RootZone.runUnary (http://localhost:55897/dart_sdk.js:38511:59) at _FutureListener.thenAwait.handleValue (http://localhost:55897/dart_sdk.js:33713:29) at handleValueCallback (http://localhost:55897/dart_sdk.js:34265:49) at Function._propagateToListeners (http://localhost:55897/dart_sdk.js:34303:17) at _Future.new.[_completeWithValue] (http://localhost:55897/dart_sdk.js:34151:23) at async._AsyncCallbackEntry.new.callback (http://localhost:55897/dart_sdk.js:34172:35) at Object._microtaskLoop (http://localhost:55897/dart_sdk.js:38778:13) at _startMicrotaskLoop (http://localhost:55897/dart_sdk.js:38784:13) at http://localhost:55897/dart_sdk.js:34519:9

Aquí está mi código de dart :

 @JS('runParamsResult') external js.JsObject _dbRunWithParamsResult(String sql, dynamic params); @override Future<List<Map<String, dynamic>>> rawQuery(String sql, [List? sqlArguments]) async { js.JsObject result; logSql(sql: sql, sqlArguments: sqlArguments); if (sqlArguments?.isNotEmpty ?? false) { try { final data = await promiseToFuture(_dbRunWithParamsResult(sql, sqlArguments)); /*Failed here*/ ... continue logic

codigo js:

 runParamsResult: function (sql, params) { return new Promise((resolve, reject) => { db.transaction(function (tx) { tx.executeSql(sql, params, function (tx, results) { console.log("show size:" + results.rows.length); resolve(results.rows); }, (sqlt, error) => reject(error)); }); }); },