From 00f258dc7a305fe683d473aa6c6e526fa0b68d9c Mon Sep 17 00:00:00 2001
From: Hayleigh Thompson <me@hayleigh.dev>
Date: Sun, 20 Aug 2023 07:20:49 +0100
Subject: :sparkles: Add a util for checking if a component name has already
 been registered.

---
 lib/src/lustre.ffi.mjs | 1 +
 lib/src/lustre.gleam   | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/lib/src/lustre.ffi.mjs b/lib/src/lustre.ffi.mjs
index b0f4661..10524e0 100644
--- a/lib/src/lustre.ffi.mjs
+++ b/lib/src/lustre.ffi.mjs
@@ -216,3 +216,4 @@ export const setup_component = (
 // UTLS ------------------------------------------------------------------------
 
 export const is_browser = () => window && window.document;
+export const is_registered = (name) => !!customElements.get(name);
diff --git a/lib/src/lustre.gleam b/lib/src/lustre.gleam
index ec04f3e..2585a5b 100644
--- a/lib/src/lustre.gleam
+++ b/lib/src/lustre.gleam
@@ -253,3 +253,8 @@ pub fn start(
 pub fn is_browser() -> Bool {
   False
 }
+
+@external(javascript, "./lustre.ffi.mjs", "is_registered")
+pub fn is_registered(_name: String) -> Bool {
+  False
+}
-- 
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