feat(unstable): added graph retrieval and assertion

src/mod.test.ts

@@ -6,14 +6,16 @@ import {
 } from "./mod.ts";
 import { assert, assertEquals } from "@std/assert";
 
-Deno.test("should resolve and load", async () => {
+Deno.test("should resolve, load and get graph", async () => {
   const workspace = new Workspace({
     nodeConditions: undefined, // unsure doesn't error
   });
   const modFileUrl = import.meta.resolve("./mod.ts");
   const loader = await workspace.createLoader({
     entrypoints: [modFileUrl],
   });
+  const graph = loader.getGraphUnstable();
+  assertEquals((graph as any).roots[0], modFileUrl);
   const resolvedUrl = loader.resolve(
     "./mod.test.ts",
     modFileUrl,

src/mod.ts

@@ -219,6 +219,15 @@ export class Loader implements Disposable {
     }
     return this.#inner.load(specifier, requestedModuleType);
   }
+
+  /** Gets the module graph.
+   *
+   * WARNING: This function is very unstable and the output may change between
+   * patch releases.
+   */
+  getGraphUnstable(): unknown {
+    return this.#inner.get_graph();
+  }
 }
 
 function requestedModuleTypeToString(moduleType: RequestedModuleType) {

src/rs_lib/lib.rs

@@ -327,6 +327,12 @@ impl Drop for DenoLoader {
 
 #[wasm_bindgen]
 impl DenoLoader {
+  pub fn get_graph(&self) -> JsValue {
+    let serializer =
+      serde_wasm_bindgen::Serializer::new().serialize_maps_as_objects(true);
+    self.graph.serialize(&serializer).unwrap()
+  }
+
   pub async fn add_roots(&mut self, roots: Vec<String>) -> Result<(), JsValue> {
     // only allow one async task to modify the graph at a time
     let task_queue = self.task_queue.clone();