diff --git a/src/api/js/src/high-level/high-level.test.ts b/src/api/js/src/high-level/high-level.test.ts
index 0a8245301..78b003b89 100644
--- a/src/api/js/src/high-level/high-level.test.ts
+++ b/src/api/js/src/high-level/high-level.test.ts
@@ -110,7 +110,7 @@ describe('high-level', () => {
   });
 
   it('test loading a solver state from a string', async () => {
-    const { Solver } = api.Context('main');
+    const { Solver, Not, Int } = api.Context('main');
     const solver = new Solver();
     solver.fromString("(declare-const x Int) (assert (and (< x 2) (> x 0)))")
     expect(await solver.check()).toStrictEqual('sat')    
diff --git a/src/api/js/src/high-level/types.ts b/src/api/js/src/high-level/types.ts
index d8bda01a1..838a6ef11 100644
--- a/src/api/js/src/high-level/types.ts
+++ b/src/api/js/src/high-level/types.ts
@@ -398,6 +398,7 @@ export interface Solver<Name extends string = 'main'> {
   add(...exprs: (Bool<Name> | AstVector<Name, Bool<Name>>)[]): void;
   addAndTrack(expr: Bool<Name>, constant: Bool<Name> | string): void;
   assertions(): AstVector<Name, Bool<Name>>;
+  from_string(s : string): void;
   check(...exprs: (Bool<Name> | AstVector<Name, Bool<Name>>)[]): Promise<CheckSatResult>;
   model(): Model<Name>;
 }