json-cursor-path

Get the JSONPath at any cursor position in JSON text. Perfect for editor plugins, JSON tools, and autocomplete features.

Try the interactive demo

Getting started

1. Install json-cursor-path

   npm i --save json-cursor-path

2. Import JsonCursorPath using ES import

   import { JsonCursorPath } from "json-cursor-path";

3. Create an instance and pass the raw JSON file

   const cursorPath = new JsonCursorPath(
     '{\n  "key": [\n    "val1",\n    "val2"\n  ]\n}'
   );

4. Get the path corresponding to a cursor position

   console.log(cursorPath.get(20));
   /**
    * Output: "$.key[0]"
    */
   
   console.log(cursorPath.get(20, true));
   /**
    * Output: [
    *    { type: 'object', key: 'key' },
    *    { type: 'array', index: 0 }
    * ]
    */

Performance

O(n) (cost of traversing the JSON until the specified cursor)