Allow awaiting array of promises.

Author: gdotdesign

runtime/index.js

@@ -2,6 +2,8 @@ export { createElement, Fragment as fragment, createContext } from "preact";
 export { useEffect, useMemo, useContext } from "preact/hooks";
 export { signal, batch } from "@preact/signals";
 
+export const promiseAll = (value) => Promise.all(value);
+
 export * from "./src/pattern_matching";
 export * from "./src/normalize_event";
 export * from "./src/utilities";
@@ -15,3 +17,4 @@ export * from "./src/portals";
 export * from "./src/variant";
 export * from "./src/styles";
 export * from "./src/debug";
+

spec/compilers/await_array

@@ -0,0 +1,21 @@
+component Main {
+  fun render : String {
+    {
+      await ["a", "b"]
+    }
+
+    "Hello"
+  }
+}
+--------------------------------------------------------------------------------
+import { promiseAll as A } from "./runtime.js";
+
+export const B = () => {
+  (async () => {
+    return await A([
+      `a`,
+      `b`
+    ])
+  })();
+  return `Hello`
+};

spec/examples/await

@@ -17,3 +17,18 @@ component Main {
     ""
   }
 }
+--------------------------------------------------------------------------------
+component Main {
+  fun render : String {
+    {
+      let value = await [`` as Promise(String)]
+
+      case value {
+        ["a"] => "a"
+        => "b"
+      }
+    }
+
+    "Hello"
+  }
+}