{
  "jsonrpc": "2.0",
  "id": 2,
  "method": "textDocument/selectionRange",
  "params": {
    "textDocument": {
      "uri": "file:///a/file.ts"
    },
    "positions": [
      {
        "line": 2,
        "character": 8
      }
    ]
  }
}