const solverMetadata = {};
let solverMetadataCounter = 0;
function createSolverMetadata(data) {
  const id = solverMetadataCounter;
  solverMetadata[id] = data;
  solverMetadataCounter++;
  return id;
}
export function setSolverMetadata(domNode, data) {
  if (domNode.dataset.solverMetadata) {
    solverMetadata[Number(domNode.dataset.solverMetadata)] = data;
    return;
  }
  domNode.dataset.solverMetadata = createSolverMetadata(data).toString(10);
}
export function getSolverMetadata(id) {
  if (typeof id === "object") {
    // assume DOM element
    if (id.dataset && id.dataset.solverMetadata) {
      return getSolverMetadata(id.dataset.solverMetadata);
    }
    return null;
  }
  if (typeof id === "string") {
    return getSolverMetadata(Number(id));
  }
  return solverMetadata[id];
}
export function deleteSolverMetadata(id) {
  if (typeof id === "object") {
    // assume DOM object
    if (id.dataset && id.dataset.solverMetadata) {
      return deleteSolverMetadata(id.dataset.solverMetadata);
    }
  }
  delete solverMetadata[id];
}