feat: add isBlockStyle type guard

theisel · Jul 20, 2022 · 74574c4 · 74574c4
1 parent 0ca6330
commit 74574c4
Showing 1 changed file with 11 additions and 0 deletions.
diff --git a/component/lib/utils.ts b/component/lib/utils.ts
@@ -0,0 +1,11 @@
+import type { Node, BlockStyle } from "./types";
+
+/** @typedef {import("./types").BlockStyle} BlockStyle */
+
+/**
+ * Checks if (node) is of {@link BlockStyle}
+ * @param {Node} node
+ * @returns {boolean}
+ */
+export const isBlockStyle = (node: Node): node is BlockStyle =>
+  typeof (node as BlockStyle).style === "string";