Revert toSpliced to splice

packages/frontend-core/src/components/grid/stores/rows.ts

@@ -423,7 +423,7 @@ export const createActions = (context: StoreContext): RowActionStore => {
     // Add to state
     if (saved.length) {
       rows.update(state => {
-        return state.splice(index + 1, 0, ...saved)
+        return state.toSpliced(index + 1, 0, ...saved)
       })
     }
 

packages/frontend-core/tsconfig.json

@@ -2,6 +2,7 @@
   "extends": "../../tsconfig.build.json",
   "compilerOptions": {
     "target": "ESNext",
+    "lib": ["ESNext"],
     "module": "preserve",
     "moduleResolution": "bundler",
     "outDir": "./dist",