test(javascript): share primitive expansion producer fixtures

tests/composition/javascript-applications/javascriptArtifactReconstruction.test.ts

@@ -1,3 +1,7 @@
+import {
+  primitiveCandidateExpansionSource,
+  primitiveByteExpansionSource,
+} from "../../fixtures/javascriptPrimitiveExpansion.js";
 import { createHash } from "node:crypto";
 import { mkdir, rm, writeFile } from "node:fs/promises";
 import { join } from "node:path";
@@ -102,23 +106,8 @@ it("preserves graph commitments and export shapes when consuming file-local IR",
 
 it("reports semantic value resource limits in application graph coverage", async () => {
   const root = await createTestTempDirectory("rea-javascript-semantic-limit-");
-  const expression = Array.from(
-    { length: 20 },
-    () => '(true ? "a" : "b")',
-  ).join(" + ");
-  await writeFile(
-    join(root, "app.js"),
-    `const answer = { nested: ${expression} };`,
-  );
-  const declarations = ['const value0 = "x";'];
-  for (let index = 1; index <= 30; index += 1) {
-    const previous = `value${String(index - 1)}`;
-    declarations.push(
-      `const value${String(index)} = ${previous} + ${previous};`,
-    );
-  }
-  declarations.push("const answer = value30;");
-  await writeFile(join(root, "growth.js"), declarations.join("\n"));
+  await writeFile(join(root, "app.js"), primitiveCandidateExpansionSource());
+  await writeFile(join(root, "growth.js"), primitiveByteExpansionSource());
   const snapshot = await scanCanonicalArtifactInventory(root, {});
   const reader = createJavaScriptArtifactReader(root, "directory");
   try {