feat: add types for representors

Author: char0n

types/index.d.ts

@@ -1,4 +1,6 @@
 export type JSONPointer = string;
+export type URIFragmentJSONPointer = string;
+export type StringifiedJSONPointer = string;
 export type ReferenceToken = string;
 export type EscapedReferenceToken = string;
 export type UnescapedReferenceToken = string;
@@ -60,6 +62,19 @@ export type JSONObject = Record<string, any>;
 
 export function evaluate(value: JSONArray | JSONObject, jsonPointer: JSONPointer, options?: EvaluationOptions): unknown;
 
+/**
+ * Representing
+ */
+export interface JSONString {
+  to(jsonPointer: JSONPointer): StringifiedJSONPointer;
+  from(jsonPointer: StringifiedJSONPointer): JSONPointer
+}
+
+export interface URIFragmentIdentifier {
+  to(jsonPointer: JSONPointer): URIFragmentJSONPointer;
+  from(jsonPointer: URIFragmentJSONPointer): JSONPointer
+}
+
 /**
  * Grammar
  */