Initial ES modules support

lib/stdlib/promise.js

@@ -15,12 +15,14 @@
 // - A fn that makes a closure keeps out of the common path: a captured arg is
 //   in a box, which every call from one place shares
 
+import { __queue_job } from "jsrt:loop";
+
 // The states of a promise
 const __PENDING = 0;
 const __FULFILLED = 1;
 const __REJECTED = 2;
 
-function Promise(executor) {
+export function Promise(executor) {
     const p = { __proto__: this.__proto__, state: __PENDING, value: undefined, reason: undefined, resolved: false, reactions: [] };
 
     if (executor !== undefined) {
@@ -122,19 +124,19 @@ Promise.prototype = {
     },
 };
 
-function __is_promise(x) {
+export function __is_promise(x) {
     return typeof x === "object" && x !== null && x.reactions !== undefined;
 }
 
 // Resolve `p` with `value`, unless it was resolved or rejected before
-function __resolve(p, value) {
+export function __resolve(p, value) {
     if (p.resolved) return;
     p.resolved = true;
     __fulfil_or_adopt(p, value);
 }
 
 // Reject `p` with `reason`, unless it was resolved or rejected before
-function __reject(p, reason) {
+export function __reject(p, reason) {
     if (p.resolved) return;
     p.resolved = true;
     __settle_rejected(p, reason);
@@ -194,6 +196,6 @@ function __adopt(p, thenable) {
     );
 }
 
-function queueMicrotask(f) {
+export function queueMicrotask(f) {
     __queue_job(f);
 }