fix: top-level-await module execution (#7946)

This commit changes implementation of top-level-await in "deno_core".

Previously promise returned from module evaluation was not awaited,
leading to out-of-order execution of modules that have TLA. It's been
fixed by changing "JsRuntime::mod_evaluate" to be an async function
that resolves when the promise returned from module evaluation also
resolves. When waiting for promise resolution event loop is polled
repeatedly, until there are no more dynamic imports or pending
ops.

6 files changed, 29 insertions, 0 deletions

diff --git a/cli/tests/tla/a.js b/cli/tests/tla/a.js
new file mode 100644
index 000000000..c3ef3f7db
--- /dev/null
+++ b/cli/tests/tla/a.js
@@ -0,0 +1,3 @@
+import order from "./order.js";
+
+order.push("b");
diff --git a/cli/tests/tla/b.js b/cli/tests/tla/b.js
new file mode 100644
index 000000000..3271c92d8
--- /dev/null
+++ b/cli/tests/tla/b.js
@@ -0,0 +1,7 @@
+import order from "./order.js";
+
+await new Promise((resolve) => {
+  setTimeout(resolve, 200);
+});
+
+order.push("a");
diff --git a/cli/tests/tla/c.js b/cli/tests/tla/c.js
new file mode 100644
index 000000000..806eb0a8b
--- /dev/null
+++ b/cli/tests/tla/c.js
@@ -0,0 +1,3 @@
+import order from "./order.js";
+
+order.push("c");
diff --git a/cli/tests/tla/d.js b/cli/tests/tla/d.js
new file mode 100644
index 000000000..2b5fd3c45
--- /dev/null
+++ b/cli/tests/tla/d.js
@@ -0,0 +1,6 @@
+import order from "./order.js";
+
+const end = Date.now() + 500;
+while (end < Date.now()) {}
+
+order.push("d");
diff --git a/cli/tests/tla/order.js b/cli/tests/tla/order.js
new file mode 100644
index 000000000..f213a562c
--- /dev/null
+++ b/cli/tests/tla/order.js
@@ -0,0 +1 @@
+export default ["order"];
diff --git a/cli/tests/tla/parent.js b/cli/tests/tla/parent.js
new file mode 100644
index 000000000..1ecc15463
--- /dev/null
+++ b/cli/tests/tla/parent.js
@@ -0,0 +1,9 @@
+import order from "./order.js";
+import "./a.js";
+import "./b.js";
+import "./c.js";
+import "./d.js";
+
+order.push("parent");
+
+export default order;