# old/mod.ts
/** Old description */
export function foo() {}

# new/mod.ts
/** New description */
export function foo() {}

# output.json
{
  "modifiedModules": {
    "file:///mod.ts": {
      "modified": [
        {
          "name": "foo",
          "declarations": {
            "modified": [
              {
                "kind": "function",
                "jsDocChanges": {
                  "docChange": {
                    "old": "Old description",
                    "new": "New description"
                  }
                }
              }
            ]
          }
        }
      ]
    }
  }
}
