import { type Point } from "https://deno.land/x/dendron_exports@v0.2.2/deps/micromark.ts";
A location in the document (line/column/offset) and chunk (_index,
_bufferIndex).
_bufferIndex is -1 when _index points to a code chunk and it’s a
non-negative integer when pointing to a string chunk.
The interface for the location in the document comes from unist Point:
https://github.com/syntax-tree/unist#point