metamask-extension/app/scripts/migrations/079.js

import { cloneDeep } from 'lodash';

const version = 79;

/**
 * Remove collectiblesDropdownState and collectiblesDetectionNoticeDismissed:.
 */
export default {
  version,
  async migrate(originalVersionedData) {
    const versionedData = cloneDeep(originalVersionedData);
    versionedData.meta.version = version;
    const state = versionedData.data;
    const newState = transformState(state);
    versionedData.data = newState;
    return versionedData;
  },
};

function transformState(state) {
  if (
    state?.AppStateController?.collectiblesDetectionNoticeDismissed !==
    undefined
  ) {
    delete state.AppStateController.collectiblesDetectionNoticeDismissed;
  }
  if (state?.metamask?.collectiblesDropdownState !== undefined) {
    delete state.metamask.collectiblesDropdownState;
  }
  return state;
}