test-js: Use prettier and format all files

Author: https://github.com/mattco98
Commit: 6d58c48c2f
Pull-request: https://github.com/SerenityOS/serenity/pull/2689
Reviewed-by: https://github.com/linusg

Libraries/LibJS/Tests/indexed-access-string-object.js

@@ -1,15 +1,15 @@
 test("string literal indexing", () => {
-    var s = "foo";
-    expect(s[0]).toBe("f");
-    expect(s[1]).toBe("o");
-    expect(s[2]).toBe("o");
-    expect(s[3]).toBeUndefined();
+  var s = "foo";
+  expect(s[0]).toBe("f");
+  expect(s[1]).toBe("o");
+  expect(s[2]).toBe("o");
+  expect(s[3]).toBeUndefined();
 });
 
 test("string object indexing", () => {
-    var s = new String("bar");
-    expect(s[0]).toBe("b");
-    expect(s[1]).toBe("a");
-    expect(s[2]).toBe("r");
-    expect(s[3]).toBeUndefined();
+  var s = new String("bar");
+  expect(s[0]).toBe("b");
+  expect(s[1]).toBe("a");
+  expect(s[2]).toBe("r");
+  expect(s[3]).toBeUndefined();
 });