Define how to handle thins within conditionals

docs/modules/ROOT/pages/references/style-guide.adoc

@@ -160,6 +160,62 @@ local baz =
   };
 ----
 
+* Objects within a conditional start on the same line as the condition.
++
+[source,jsonnet]
+----
+// PREFERRED
+local foo(x) =
+  if x == 42 then {
+    result: "The Answer",
+  }
+  else {
+    result: "Don't know",
+  };
+
+
+// ACCEPTABLE
+local bar(x) =
+  if x == 42 then
+    {
+      result: "The Answer",
+    }
+  else
+    {
+      result: "Don't know",
+    };
+----
+
+* Start `if` and `else` on new lines and prefer to keep `else if` together.
++
+[sourece,jsonnet]
+----
+// PREFERRED
+local foo(x) =
+  if x < 42 then {
+    result: "No enought",
+  }
+  else if > 42 then {
+    result: "Too much",
+  }
+  else {
+    result: "The Answer",
+  }
+
+// ACCEPTABLE
+local bar(x) =
+  if x < 42 then {
+    result: "No enought",
+  }
+  else
+    if > 42 then {
+      result: "Too much",
+    }
+    else {
+      result: "The Answer",
+    }
+----
+
 * Omit tailing `,` on single line arrays and objects.
   Keep them when splitting over multiple lines.
 +