refactor: better typing for tool icons

web/src/lib/tool-icons.test.ts

@@ -0,0 +1,18 @@
+import { describe, expect, it } from "vitest";
+import { PAGES } from "./registry";
+import { TOOL_ICONS } from "./tool-icons";
+
+describe("tool-icons", () => {
+	it("every icon key is an existing page slug", () => {
+		const slugs = new Set<string>(PAGES.map((page) => page.slug));
+		const orphans = Object.keys(TOOL_ICONS).filter((key) => !slugs.has(key));
+		expect(orphans).toEqual([]);
+	});
+
+	it("every page has an icon", () => {
+		const missing = PAGES.map((page) => page.slug).filter(
+			(slug) => !(slug in TOOL_ICONS),
+		);
+		expect(missing).toEqual([]);
+	});
+});