refactor(javascript): group domain semantics and contracts (#907)

src/domain/javascript/javascriptAstFingerprint.test.ts

@@ -0,0 +1,16 @@
+import { parse } from "@babel/parser";
+import { describe, expect, it } from "vitest";
+
+import { fingerprintJavaScriptAst } from "./javascriptAstFingerprint.js";
+
+describe("JavaScript AST fingerprints", () => {
+  it("includes complete literal values in the fingerprint", () => {
+    const prefix = "x".repeat(1_024);
+    const left = parse(`const value = ${JSON.stringify(`${prefix}left`)};`);
+    const right = parse(`const value = ${JSON.stringify(`${prefix}right`)};`);
+
+    expect(fingerprintJavaScriptAst(left)).not.toBe(
+      fingerprintJavaScriptAst(right),
+    );
+  });
+});