Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibJS/Tests/builtins/JSON/JSON.stringify-replacer.js

@@ -0,0 +1,38 @@
+test("basic functionality", () => {
+    let o = {
+        var1: "foo",
+        var2: 42,
+        arr: [
+            1,
+            2,
+            {
+                nested: {
+                    hello: "world",
+                },
+                get x() {
+                    return 10;
+                },
+            },
+        ],
+        obj: {
+            subarr: [3],
+        },
+    };
+
+    let string = JSON.stringify(o, (key, value) => {
+        if (key === "hello") return undefined;
+        if (value === 10) return 20;
+        if (key === "subarr") return [3, 4, 5];
+        return value;
+    });
+
+    expect(string).toBe(
+        '{"var1":"foo","var2":42,"arr":[1,2,{"nested":{},"x":20}],"obj":{"subarr":[3,4,5]}}'
+    );
+
+    string = JSON.stringify(o, ["var1", "var1", "var2", "obj"]);
+    expect(string).toBe('{"var1":"foo","var2":42,"obj":{}}');
+
+    string = JSON.stringify(o, ["var1", "var1", "var2", "obj", "subarr"]);
+    expect(string).toBe('{"var1":"foo","var2":42,"obj":{"subarr":[3]}}');
+});