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/functions/function-name.js

@@ -0,0 +1,74 @@
+test("basic functionality", () => {
+    expect(function () {}.name).toBe("");
+
+    function bar() {}
+    expect(bar.name).toBe("bar");
+    expect((bar.name = "baz")).toBe("baz");
+    expect(bar.name).toBe("bar");
+});
+
+test("function assigned to variable", () => {
+    let foo = function () {};
+    expect(foo.name).toBe("foo");
+    expect((foo.name = "bar")).toBe("bar");
+    expect(foo.name).toBe("foo");
+
+    let a, b;
+    a = b = function () {};
+    expect(a.name).toBe("b");
+    expect(b.name).toBe("b");
+});
+
+test("functions in array assigned to variable", () => {
+    const arr = [function () {}, function () {}, function () {}];
+    expect(arr[0].name).toBe("");
+    expect(arr[1].name).toBe("");
+    expect(arr[2].name).toBe("");
+});
+
+test("functions in objects", () => {
+    let f;
+    let o = { a: function () {} };
+
+    expect(o.a.name).toBe("a");
+    f = o.a;
+    expect(f.name).toBe("a");
+    expect(o.a.name).toBe("a");
+
+    o = { ...o, b: f };
+    expect(o.a.name).toBe("a");
+    expect(o.b.name).toBe("a");
+
+    // Member expressions do not get named.
+    o.c = function () {};
+    expect(o.c.name).toBe("");
+});
+
+test("names of native functions", () => {
+    expect(console.debug.name).toBe("debug");
+    expect((console.debug.name = "warn")).toBe("warn");
+    expect(console.debug.name).toBe("debug");
+});
+
+describe("some anonymous functions get renamed", () => {
+    test("direct assignment does name new function expression", () => {
+        // prettier-ignore
+        let f1 = (function () {});
+        expect(f1.name).toBe("f1");
+
+        let f2 = false;
+        f2 ||= function () {};
+        expect(f2.name).toBe("f2");
+    });
+
+    test("assignment from variable does not name", () => {
+        const f1 = function () {};
+        let f3 = f1;
+        expect(f3.name).toBe("f1");
+    });
+
+    test("assignment via expression does not name", () => {
+        let f4 = false || function () {};
+        expect(f4.name).toBe("");
+    });
+});