diff --git a/README.md b/README.md
index 551ded0..eba658b 100644
--- a/README.md
+++ b/README.md
@@ -144,6 +144,7 @@ The type declarations in this repository include the following specifications (g
  - [Privacy Community Group](https://github.com/WebAudio):
 	 - [Global Privacy Control](https://privacycg.github.io/gpc-spec/)
  - [TC39](https://tc39.es):
+	 - [Array.fromAsync](https://tc39.es/proposal-array-from-async/)
 	 - [Array Grouping](https://tc39.es/proposal-array-grouping/)
 	 - [ECMAScript Language Specification](https://tc39.es/ecma262/)
 	 - [Import Attributes](https://tc39.es/proposal-import-attributes/)
diff --git a/index.d.ts b/index.d.ts
index 1b74c09..ceeda60 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -20,6 +20,7 @@
 
 /// <reference path="./privacycg/global-privacy-control.d.ts" />
 
+/// <reference path="./tc39/array-from-async.d.ts" />
 /// <reference path="./tc39/array-grouping.d.ts" />
 /// <reference path="./tc39/esnext.d.ts" />
 /// <reference path="./tc39/import-attributes.d.ts" />
diff --git a/package.json b/package.json
index 47346bd..a5ecbb7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "new-javascript",
-	"version": "0.3.4",
+	"version": "0.3.5",
 	"description": "TypeScript type definitions for new JavaScript stuff that isn't yet in TypeScript's standard type definitions",
 	"main": "./index.d.ts",
 	"repository": {
diff --git a/tc39/array-from-async.d.ts b/tc39/array-from-async.d.ts
new file mode 100644
index 0000000..7ff3278
--- /dev/null
+++ b/tc39/array-from-async.d.ts
@@ -0,0 +1,8 @@
+
+// Array.fromAsync
+// Specification: https://tc39.es/proposal-array-from-async/
+// Repository: https://github.com/tc39/proposal-array-from-async
+
+interface ArrayConstructor {
+	fromAsync<T>(asyncIterable: AsyncIterable<T>): Promise<T[]>;
+}
diff --git a/tc39/array-grouping.d.ts b/tc39/array-grouping.d.ts
index c7e8b57..6d8669d 100644
--- a/tc39/array-grouping.d.ts
+++ b/tc39/array-grouping.d.ts
@@ -3,8 +3,10 @@
 // Specification: https://tc39.es/proposal-array-grouping/
 // Repository: https://github.com/tc39/proposal-array-grouping
 
-interface Array<T> {
-	group(callback: (item: T, index?: number, array?: T[]) => string, thisArg?: any): Record<string, T[]>;
-	groupToMap(callback: (item: T, index?: number, array?: T[]) => string, thisArg?: any): Map<string, T[]>;
+interface ObjectConstructor {
+	groupBy<T>(array: T[], callback: (item: T, index?: number) => string): Record<string, T[]>;
 }
 
+interface MapConstructor {
+	groupBy<T, K>(array: T[], callback: (item: T, index?: number) => K): Map<K, T[]>;
+}
diff --git a/test.ts b/test.ts
index 31abf60..f884464 100644
--- a/test.ts
+++ b/test.ts
@@ -11,6 +11,12 @@
 // / <reference path="./worklet/layout.d.ts" />
 // / <reference path="./worklet/audio.d.ts" />
 
+Object.fromEntries
+
+Map.toString
+
+
+
 CSS.lvmin
 
 new DecompressionStream("deflate-raw");
diff --git a/w3c/permissions-registry.d.ts b/w3c/permissions-registry.d.ts
index 224f42b..89059a8 100644
--- a/w3c/permissions-registry.d.ts
+++ b/w3c/permissions-registry.d.ts
@@ -5,17 +5,23 @@
 
 declare namespace NewJavaScript {
 	type PermissionName = (
-		// in lib.dom.d.ts: "geolocation", "notifications", "push", "persistent-storage", "screen-wake-lock", "xr-spatial-tracking"
+		// in lib.dom.d.ts:
+		| "geolocation"
+		| "notifications"
+		| "push"
+		| "persistent-storage"
+		| "screen-wake-lock"
+		| "xr-spatial-tracking"
 
-		// https://w3c.github.io/permissions-registry/#registry-table-of-standardized-permissions
+		// https://w3c.github.io/permissions-registry/#registry-table-of-standardized-permissions:
 		| "web-share"
 
-		// https://w3c.github.io/permissions-registry/#registry-table-of-provisional-permissions
+		// https://w3c.github.io/permissions-registry/#registry-table-of-provisional-permissions:
 		| "accelerometer"
 		| "window-management"
 		| "local-fonts"
 
-		// https://github.com/chromium/chromium/blob/main/third_party/blink/renderer/modules/permissions/permission_descriptor.idl
+		// https://github.com/chromium/chromium/blob/main/third_party/blink/renderer/modules/permissions/permission_descriptor.idl:
 		| "midi"
 		| "camera"
 		| "microphone"
diff --git a/worker.d.ts b/worker.d.ts
index 26c580c..c3fc12c 100644
--- a/worker.d.ts
+++ b/worker.d.ts
@@ -6,6 +6,7 @@
 
 /// <reference path="./privacycg/global-privacy-control.d.ts" />
 
+/// <reference path="./tc39/array-from-async.d.ts" />
 /// <reference path="./tc39/array-grouping.d.ts" />
 /// <reference path="./tc39/esnext.d.ts" />
 /// <reference path="./tc39/import-attributes.d.ts" />
diff --git a/worklet/worklet-global.d.ts b/worklet/worklet-global.d.ts
index 6dcc5d3..893898e 100644
--- a/worklet/worklet-global.d.ts
+++ b/worklet/worklet-global.d.ts
@@ -2,6 +2,7 @@
 // Worklets
 // https://html.spec.whatwg.org/multipage/worklets.html
 
+/// <reference path="../tc39/array-from-async.d.ts" />
 /// <reference path="../tc39/array-grouping.d.ts" />
 /// <reference path="../tc39/esnext.d.ts" />
 /// <reference path="../tc39/import-attributes.d.ts" />