type t
= Dom.mutationRecord
;
let type_: t => string;
let target: t => Dom.node;
let addedNodes: t => Dom.nodeList;
let removedNodes: t => Dom.nodeList;
let previousSibling: t => option(Dom.node);
let pnextSibling: t => option(Dom.node);
let attributeName: t => string;
let attributeNamespace: t => string;
let oldValue: t => string;