fix(javascript): retain distinct chunk registration callback metadata (#2737)

Co-authored-by: LouisChen <3361008+chqcjq@users.noreply.github.com>

src/domain/javascript/javascriptBundlerRegistrationIdentity.test.ts

@@ -0,0 +1,78 @@
+import { expect, it } from "vitest";
+import { analyzeJavaScriptStaticSource } from "./javascriptStaticAnalysis.js";
+
+const registration = (runtime: string, callback: string, chunk = 1) =>
+  "(globalThis." +
+  runtime +
+  " = globalThis." +
+  runtime +
+  " || []).push([[" +
+  chunk +
+  "], {a: function() {}}, " +
+  callback +
+  "]);";
+
+it.each(["webpackChunkFixture", "rspackChunkFixture"])(
+  "keeps differing callback facts for %s independent of source order",
+  (runtime) => {
+    const first = registration(
+      runtime,
+      'function(r) { r(7); r.e("chunk-a"); }',
+    );
+    const second = registration(
+      runtime,
+      'function(r) { r(8); r.e("chunk-b"); }',
+    );
+    for (const source of [first + "\n" + second, second + "\n" + first]) {
+      const result = analyzeJavaScriptStaticSource(source);
+      expect(result.parse_status).toBe("complete");
+      expect(result.bundler_registrations).toHaveLength(2);
+      expect(
+        result.bundler_registrations.flatMap((r) => r.entry_module_keys).sort(),
+      ).toEqual(["7", "8"]);
+      expect(
+        result.bundler_registrations.flatMap((r) => r.async_chunk_keys).sort(),
+      ).toEqual(["chunk-a", "chunk-b"]);
+    }
+    expect(
+      analyzeJavaScriptStaticSource(first + "\n" + first).bundler_registrations,
+    ).toHaveLength(1);
+    expect(
+      analyzeJavaScriptStaticSource(first).bundler_registrations[0],
+    ).toMatchObject({
+      entry_module_keys: ["7"],
+      async_chunk_keys: ["chunk-a"],
+    });
+    expect(
+      analyzeJavaScriptStaticSource(second).bundler_registrations[0],
+    ).toMatchObject({
+      entry_module_keys: ["8"],
+      async_chunk_keys: ["chunk-b"],
+    });
+  },
+);
+
+it.each([
+  ["function(r) { r(7); }", "function(r) { r(8); }"],
+  ['function(r) { r.e("a"); }', 'function(r) { r.e("b"); }'],
+  ["function(r) {}", "function(s) {}"],
+  ["function(r) {}", "function(r) { r(dynamic); }"],
+  ["function(r) {}", "function(r) { r.e(dynamic); }"],
+])("retains callback metadata differences: %s / %s", (left, right) => {
+  const result = analyzeJavaScriptStaticSource(
+    registration("webpackChunkFixture", left) +
+      "\n" +
+      registration("webpackChunkFixture", right),
+  );
+  expect(result.bundler_registrations).toHaveLength(2);
+});
+
+it("retains distinct chunk identities with identical callbacks", () => {
+  const callback = "function(r) { r(7); }";
+  const result = analyzeJavaScriptStaticSource(
+    registration("webpackChunkFixture", callback, 1) +
+      "\n" +
+      registration("webpackChunkFixture", callback, 2),
+  );
+  expect(result.bundler_registrations).toHaveLength(2);
+});