Add types of data fields

.gitignore

@@ -4,3 +4,4 @@
 coverage/
 node_modules/
 yarn.lock
+!/index.d.ts

index.d.ts

@@ -0,0 +1,49 @@
+import type {Position} from 'unist'
+
+export type {Options, Space} from './lib/index.js'
+
+export {fromParse5} from './lib/index.js'
+
+// Register data on hast.
+declare module 'hast' {
+  interface ElementData {
+    position: {
+      /**
+       * Positional info of the start tag of an element.
+       *
+       * Field added by `hast-util-from-parse5` (a utility used inside
+       * `rehype-parse` responsible for parsing HTML), when passing
+       * `verbose: true`.
+       */
+      opening?: Position | undefined
+
+      /**
+       * Positional info of the end tag of an element.
+       *
+       * Field added by `hast-util-from-parse5` (a utility used inside
+       * `rehype-parse` responsible for parsing HTML), when passing
+       * `verbose: true`.
+       */
+      closing?: Position | undefined
+
+      /**
+       * Positional info of the properties of an element.
+       *
+       * Field added by `hast-util-from-parse5` (a utility used inside
+       * `rehype-parse` responsible for parsing HTML), when passing
+       * `verbose: true`.
+       */
+      properties?: Record<string, Position | undefined> | undefined
+    }
+  }
+
+  interface RootData {
+    /**
+     * Whether the document was using quirksmode.
+     *
+     * Field added by `hast-util-from-parse5` (a utility used inside
+     * `rehype-parse` responsible for parsing HTML).
+     */
+    quirksMode?: boolean | undefined
+  }
+}

index.js

@@ -1,6 +1,2 @@
-/**
- * @typedef {import('./lib/index.js').Options} Options
- * @typedef {import('./lib/index.js').Space} Space
- */
-
+// Note: extra types exposed from `index.d.ts`.
 export {fromParse5} from './lib/index.js'

lib/index.js

@@ -1,5 +1,6 @@
 /**
  * @typedef {import('hast').Element} Element
+ * @typedef {import('hast').ElementData} ElementData
  * @typedef {import('hast').Nodes} Nodes
  * @typedef {import('hast').Root} Root
  * @typedef {import('hast').RootContent} RootContent
@@ -321,7 +322,7 @@ function createLocation(state, node, location) {
       assert(location.startTag, 'a start tag should exist')
       const opening = position(location.startTag)
       const closing = location.endTag ? position(location.endTag) : undefined
-      /** @type {Record<string, unknown>} */
+      /** @type {ElementData['position']} */
       const data = {opening}
       if (closing) data.closing = closing
       data.properties = props

package.json

@@ -85,6 +85,12 @@
   },
   "xo": {
     "overrides": [
+      {
+        "files": "**/*.ts",
+        "rules": {
+          "@typescript-eslint/consistent-type-definitions": "off"
+        }
+      },
       {
         "files": "test/**/*.js",
         "rules": {

tsconfig.json

@@ -11,5 +11,5 @@
     "target": "es2020"
   },
   "exclude": ["coverage/", "node_modules/"],
-  "include": ["**/*.js"]
+  "include": ["**/*.js", "index.d.ts"]
 }