fix(core/modules): Prepare modules only once per runtime (#11015)

This commit changes module loading implementation in "deno_core"
to call "ModuleLoader::prepare" hook only once per entry point.

This is done to avoid multiple type checking of the same code
in case of duplicated dynamic imports.

Relevant code in "cli/module_graph.rs" was updated as well.

1 files changed, 14 insertions, 0 deletions

diff --git a/cli/tests/single_compile_with_reload.ts b/cli/tests/single_compile_with_reload.ts
index a4d6d0341..f84e91f2f 100644
--- a/cli/tests/single_compile_with_reload.ts
+++ b/cli/tests/single_compile_with_reload.ts
@@ -2,3 +2,17 @@ await import("./single_compile_with_reload_dyn.ts");
 console.log("1");
 await import("./single_compile_with_reload_dyn.ts");
 console.log("2");
+await new Promise((r) =>
+  new Worker(
+    new URL("single_compile_with_reload_worker.ts", import.meta.url).href,
+    { type: "module" },
+  ).onmessage = r
+);
+console.log("3");
+await new Promise((r) =>
+  new Worker(
+    new URL("single_compile_with_reload_worker.ts", import.meta.url).href,
+    { type: "module" },
+  ).onmessage = r
+);
+console.log("4");