From 8d467c112ddaace81322d725e117077a2320a2e4 Mon Sep 17 00:00:00 2001
From: David Dal Busco <david.dalbusco@dfinity.org>
Date: Wed, 17 Apr 2024 17:57:10 +0200
Subject: [PATCH] chore: solve lint error type 'undefined' is not assignable to
 type 'Node' (#412)

# Motivation

Lint currently detects an error on `main`:

```
/Users/daviddalbusco/projects/dfinity/gix-components/src/lib/components/Tooltip.svelte:69:31
Error: Argument of type 'HTMLDivElement | undefined' is not assignable to parameter of type 'Node'.
  Type 'undefined' is not assignable to type 'Node'. (ts)
    // Move tooltip to the body to avoid it being cut off by overflow: hidden.
    document.body.appendChild(tooltipComponent);
  });
```
---
 src/lib/components/Tooltip.svelte | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/lib/components/Tooltip.svelte b/src/lib/components/Tooltip.svelte
index 52cc7ea5..37dffda5 100644
--- a/src/lib/components/Tooltip.svelte
+++ b/src/lib/components/Tooltip.svelte
@@ -1,6 +1,6 @@
 <script lang="ts">
   import { onMount, onDestroy } from "svelte";
-  import { notEmptyString } from "@dfinity/utils";
+  import { nonNullish, notEmptyString } from "@dfinity/utils";
   import { translateTooltip } from "$lib/utils/tooltip.utils";
 
   export let id: string;
@@ -66,7 +66,7 @@
 
   onMount(async () => {
     // Move tooltip to the body to avoid it being cut off by overflow: hidden.
-    document.body.appendChild(tooltipComponent);
+    nonNullish(tooltipComponent) && document.body.appendChild(tooltipComponent);
   });
 
   let destroyed = false;