use Promise.withResolvers

Author: severo

packages/utils/eslint.config.js

@@ -9,7 +9,7 @@ export default tseslint.config(
     extends: [js.configs.recommended, ...tseslint.configs.strictTypeChecked, ...tseslint.configs.stylisticTypeChecked],
     files: ['**/*.{ts,js}'],
     languageOptions: {
-      ecmaVersion: 2020,
+      ecmaVersion: globals.esnext,
       globals: globals.browser,
       parserOptions: {
         project: ['./tsconfig.json', './tsconfig.eslint.json'],
@@ -26,7 +26,7 @@ export default tseslint.config(
   {
     files: ['test/**/*.{ts}', '*.{js,ts}'],
     languageOptions: {
-      ecmaVersion: 2020,
+      ecmaVersion: globals.esnext,
       globals: {
         ...globals.node,
         ...globals.browser,

packages/utils/src/dataframe.ts

@@ -85,18 +85,19 @@ export type ResolvablePromise<T> = Promise<T> & {
 }
 
 /**
- * Create a promise that can be resolved or rejected later.
+ * Create a promise that can be resolved or rejected later using the resolve and reject methods.
+ * It's also a wrapped promise, with resolved and rejected properties.
  */
-export function resolvablePromise<T>(): ResolvablePromise<T> {
-  let resolve: (value: T) => void
-  let reject: (error: Error) => void
-  const promise = wrapPromise(new Promise<T>((res, rej) => {
-    resolve = res
-    reject = rej
-  })) as ResolvablePromise<T>
-  promise.resolve = resolve!
-  promise.reject = reject!
-  return promise
+export function resolvablePromise<T>(): ResolvablePromise<T> & WrappedPromise<T> {
+  const promise = Promise.withResolvers<T>()
+  const wrapped = Object.assign(
+    wrapPromise(promise.promise),
+    {
+      resolve: promise.resolve,
+      reject : promise.reject,
+    },
+  )
+  return wrapped
 }
 
 /**

packages/utils/tsconfig.json

@@ -3,7 +3,7 @@
     "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.tsbuildinfo",
     "target": "ES2020",
     "useDefineForClassFields": true,
-    "lib": ["ES2020", "DOM", "DOM.Iterable"],
+    "lib": ["ESNext", "DOM", "DOM.Iterable"],
     "module": "NodeNext",
     "skipLibCheck": true,