test(webapp): assert xml parser accepts aws entity names

Author: ArjunCodess

apps/webapp/test/fastXmlParserAwsEntities.test.ts

@@ -0,0 +1,27 @@
+import { readFileSync } from "node:fs";
+import { dirname, join } from "node:path";
+import { fileURLToPath } from "node:url";
+import { describe, expect, it } from "vitest";
+
+const rootPackageJson = JSON.parse(
+  readFileSync(join(dirname(fileURLToPath(import.meta.url)), "../../../package.json"), "utf8")
+) as {
+  pnpm: { overrides: Record<string, string> };
+};
+
+describe("fast-xml-parser aws sdk compatibility", () => {
+  it("pins 5.x past the 5.7 window that rejects addEntity('#xD')", () => {
+    expect(rootPackageJson.pnpm.overrides["fast-xml-parser@>=5 <5.8.0"]).toBe("^5.8.0");
+  });
+
+  it("accepts the character-reference entities @aws-sdk/xml-builder registers", async () => {
+    const { XMLParser } = await import("fast-xml-parser");
+    const parser = new XMLParser({ htmlEntities: true });
+
+    expect(() => {
+      parser.addEntity("#xD", "\r");
+      parser.addEntity("#10", "\n");
+      parser.parse("<a>1</a>", true);
+    }).not.toThrow();
+  });
+});