Add raw nodes to hast node type registry

When using this utility, the raw type will automatically be added to
hast in the correct places.

See DefinitelyTyped/DefinitelyTyped#55187 for more information.

This also improves the types by allowing an overload of omitted vfile.

.gitignore

@@ -1,6 +1,7 @@
-.DS_Store
-*.d.ts
-*.log
 coverage/
 node_modules/
+.DS_Store
+*.log
+index.d.ts
+test.d.ts
 yarn.lock

complex-types.d.ts

@@ -0,0 +1,15 @@
+import type {Literal} from 'hast'
+
+export interface Raw extends Literal {
+  type: 'raw'
+}
+
+declare module 'hast' {
+  interface RootContentMap {
+    raw: Raw
+  }
+
+  interface ElementContentMap {
+    raw: Raw
+  }
+}

index.js

@@ -1,5 +1,6 @@
 /**
  * @typedef {import('./lib/index.js').Options} Options
+ * @typedef {import('./complex-types').Raw} Raw
  */
 
 export {raw} from './lib/index.js'