set status in Promise.then

src/eval.js

@@ -298,14 +298,18 @@ export const eval_modules = (
       promise_then = Promise.prototype.then
 
       Promise.prototype.then = function then(on_resolve, on_reject) {
+
         if(children == null) {
           children = []
         }
         let children_copy = children
 
-        const make_callback = cb => typeof(cb) != 'function'
+        const make_callback = (cb, ok) => typeof(cb) != 'function'
           ? cb
           : value => {
+              if(this.status == null) {
+                this.status = ok ? {ok, value} : {ok, error: value}
+              }
               const current = children
               children = children_copy
               try {
@@ -317,8 +321,8 @@ export const eval_modules = (
 
         return promise_then.call(
           this,
-          make_callback(on_resolve),
-          make_callback(on_reject),
+          make_callback(on_resolve, true),
+          make_callback(on_reject, false),
         )
       }
     }

test/test.js

@@ -2749,6 +2749,33 @@ const y = x()`
     assert_equal(call_delay.fn.name, 'delay')
   }),
 
+  test('async/await Promise.all set child promises status ok', async () => {
+    const i = await test_initial_state_async(`
+      const async_fn = async () => 1
+      await Promise.all([1,2,3].map(async_fn))
+    `)
+    const async_fn_call =
+      root_calltree_node(i)
+      .children[0] // map
+      .children[0] // first call of async_fn
+    assert_equal(async_fn_call.value.status.ok, true)
+    assert_equal(async_fn_call.value.status.value, 1)
+  }),
+
+  test('async/await Promise.all set child promises status error', 
+  async () => {
+    const i = await test_initial_state_async(`
+      const async_fn = async () => { throw 1 }
+      await Promise.all([1,2,3].map(async_fn))
+    `)
+    const async_fn_call =
+      root_calltree_node(i)
+      .children[0] // map
+      .children[0] // first call of async_fn
+    assert_equal(async_fn_call.value.status.ok, false)
+    assert_equal(async_fn_call.value.status.error, 1)
+  }),
+
   test('async/await logs out of order', async () => {
     const i = await test_initial_state_async(`
       // Init promises p1 and p2 that are resolved in different order (p2 then