From b83f8d8372db43bf5db26d15b88bd9eff769aeb4 Mon Sep 17 00:00:00 2001
From: Christopher Pruijsen <christopher.pruijsen@gmail.com>
Date: Sat, 12 Sep 2026 09:24:11 +0100
Subject: [PATCH] exclude tip from TipOptions (#2459)

---
 src/marks/tip.d.ts |  2 +-
 test/tip.test-d.ts | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)
 create mode 100644 test/tip.test-d.ts

diff --git a/src/marks/tip.d.ts b/src/marks/tip.d.ts
index 7faf45b759..6dfa5842d4 100644
--- a/src/marks/tip.d.ts
+++ b/src/marks/tip.d.ts
@@ -3,7 +3,7 @@ import type {Data, FrameAnchor, MarkOptions, RenderableMark} from "../mark.js";
 import type {TextStyles} from "./text.js";
 
 /** Options for the tip mark. */
-export interface TipOptions extends MarkOptions, TextStyles {
+export interface TipOptions extends Omit<MarkOptions, "tip">, TextStyles {
   /**
    * The horizontal position channel specifying the tip’s anchor, typically
    * bound to the *x* scale.
diff --git a/test/tip.test-d.ts b/test/tip.test-d.ts
new file mode 100644
index 0000000000..2b88b50990
--- /dev/null
+++ b/test/tip.test-d.ts
@@ -0,0 +1,14 @@
+/* eslint-disable @typescript-eslint/ban-ts-comment */
+
+import * as Plot from "@observablehq/plot";
+import {it} from "vitest";
+
+it("a nested tip option is not allowed", () => {
+  // @ts-expect-error
+  Plot.dot([], {x: 0, y: 0, tip: {tip: true}});
+});
+
+it("Plot.tip does not accept a tip option", () => {
+  // @ts-expect-error
+  Plot.tip([], {x: 0, y: 0, tip: true});
+});