diff --git a/dev/index.js b/dev/index.js
index ac72176..41ea2cb 100644
--- a/dev/index.js
+++ b/dev/index.js
@@ -1,3 +1,4 @@
+/** @import { Processor } from "unified" */
 import {abbr} from './lib/micromark-extension-abbr/syntax.js'
 import {abbrFromMarkdown} from './lib/mdast-util-abbr/index.js'
 
@@ -7,7 +8,7 @@ export {
 } from './lib/micromark-extension-abbr/syntax.js'
 export {abbrFromMarkdown as mdastUtilAbbrFromMarkdown} from './lib/mdast-util-abbr/index.js'
 
-/** @this {any} */
+/** @this {Processor} */
 export default function remarkAbbr() {
   const self = this
   const data = self.data()