LibJS: Indent tests with 4 spaces instead of 2

Author: https://github.com/mattco98
Commit: 1ef573eb30
Pull-request: https://github.com/SerenityOS/serenity/pull/2689
Reviewed-by: https://github.com/linusg

Libraries/LibJS/Tests/update-expressions-basic.js

@@ -1,53 +1,53 @@
 describe("correct behavior", () => {
-  test("basic functionality", () => {
-    let n = 0;
-    expect(++n).toBe(1);
-    expect(n).toBe(1);
+    test("basic functionality", () => {
+        let n = 0;
+        expect(++n).toBe(1);
+        expect(n).toBe(1);
 
-    n = 0;
-    expect(n++).toBe(0);
-    expect(n).toBe(1);
+        n = 0;
+        expect(n++).toBe(0);
+        expect(n).toBe(1);
 
-    n = 0;
-    expect(--n).toBe(-1);
-    expect(n).toBe(-1);
+        n = 0;
+        expect(--n).toBe(-1);
+        expect(n).toBe(-1);
 
-    n = 0;
-    expect(n--).toBe(0);
-    expect(n).toBe(-1);
+        n = 0;
+        expect(n--).toBe(0);
+        expect(n).toBe(-1);
 
-    let a = [];
-    expect(a++).toBe(0);
-    expect(a).toBe(1);
+        let a = [];
+        expect(a++).toBe(0);
+        expect(a).toBe(1);
 
-    let b = true;
-    expect(b--).toBe(1);
-    expect(b).toBe(0);
-  });
+        let b = true;
+        expect(b--).toBe(1);
+        expect(b).toBe(0);
+    });
 
-  test("updates that produce NaN", () => {
-    let s = "foo";
-    expect(++s).toBeNaN();
-    expect(s).toBeNaN();
+    test("updates that produce NaN", () => {
+        let s = "foo";
+        expect(++s).toBeNaN();
+        expect(s).toBeNaN();
 
-    s = "foo";
-    expect(s++).toBeNaN();
-    expect(s).toBeNaN();
+        s = "foo";
+        expect(s++).toBeNaN();
+        expect(s).toBeNaN();
 
-    s = "foo";
-    expect(--s).toBeNaN();
-    expect(s).toBeNaN();
+        s = "foo";
+        expect(--s).toBeNaN();
+        expect(s).toBeNaN();
 
-    s = "foo";
-    expect(s--).toBeNaN();
-    expect(s).toBeNaN();
-  });
+        s = "foo";
+        expect(s--).toBeNaN();
+        expect(s).toBeNaN();
+    });
 });
 
 describe("errors", () => {
-  test("update expression throws reference error", () => {
-    expect(() => {
-      ++x;
-    }).toThrowWithMessage(ReferenceError, "'x' is not defined");
-  });
+    test("update expression throws reference error", () => {
+        expect(() => {
+            ++x;
+        }).toThrowWithMessage(ReferenceError, "'x' is not defined");
+    });
 });