Change plugin type

Author: pomber

packages/mdx/src/remark/transform.ts

@@ -10,7 +10,6 @@ import { valueToEstree } from "./to-estree"
 import { CH_CODE_CONFIG_VAR_NAME } from "./unist-utils"
 import { JsxNode, SuperNode, visit } from "./nodes"
 import { addConfigDefaults, CodeHikeConfig } from "./config"
-import { Attacher } from "unified"
 
 const transforms = [
   transformPreviews,
@@ -21,10 +20,21 @@ const transforms = [
   transformInlineCodes,
   transformCodes,
 ]
-export const attacher: Attacher<
-  [CodeHikeConfig?]
-> = unsafeConfig => {
-  return async (tree: SuperNode, file: any) => {
+
+type VFile = {
+  history: string[]
+  cwd: string
+}
+
+type Transformer = (
+  node: SuperNode,
+  file: VFile
+) => Promise<void>
+
+type Plugin = (config: CodeHikeConfig) => Transformer
+
+export const attacher: Plugin = unsafeConfig => {
+  return async (tree: SuperNode, file: VFile) => {
     const config = addConfigDefaults(
       unsafeConfig,
       file?.cwd,