Began rewrite of all parenting functions to nested sets

What have I gotten myself into :(

app/imports/api/parenting/softRemove.ts

@@ -0,0 +1,90 @@
+import { getCollectionByName, getFilter } from '/imports/api/parenting/parentingFunctions';
+import { TreeDoc } from '/imports/api/parenting/ChildSchema';
+
+export async function softRemove(collection: Mongo.Collection<TreeDoc> | string, doc?: TreeDoc | string) {
+  const removalDate = new Date();
+  if (typeof collection === 'string') {
+    collection = getCollectionByName(collection);
+  }
+  if (typeof doc === 'string') {
+    doc = await collection.findOneAsync(doc);
+  }
+  if (!doc) {
+    throw new Meteor.Error('not found', 'The document to remove was not found');
+  }
+  // Remove this document
+  const removeDocPromise = collection.updateAsync(
+    doc._id,
+    {
+      $set: {
+        removed: true,
+        removedAt: removalDate,
+      },
+      $unset: {
+        removedWith: 1,
+      }
+    }, {
+    selector: { type: 'any' },
+  },
+  );
+  // Remove all the descendants that have not yet been removed, and set them to be
+  // removed with this document
+  const removeDescendantsPromise = collection.updateAsync({
+    ...getFilter.descendants(doc),
+    removed: { $ne: true },
+  }, {
+    $set: {
+      removed: true,
+      removedAt: removalDate,
+      removedWith: doc._id,
+    }
+  }, {
+    selector: { type: 'any' },
+    multi: true,
+  });
+  return Promise.all([removeDocPromise, removeDescendantsPromise]);
+}
+
+const restoreError = function () {
+  throw new Meteor.Error('restore-failed',
+    'Could not restore this document, maybe it was removed by a parent?'
+  );
+};
+
+export async function restore(collection: Mongo.Collection<TreeDoc> | string, doc: TreeDoc | string, extraUpdates) {
+  if (typeof collection === 'string') {
+    collection = getCollectionByName(collection);
+  }
+  if (typeof doc === 'string') {
+    const foundDoc = await collection.findOneAsync(doc)
+    if (!foundDoc) {
+      throw new Meteor.Error('not found', 'The document to remove was not found');
+    }
+    doc = foundDoc;
+  }
+  const numUpdated: number = await collection.updateAsync({
+    _id: doc._id,
+    removedWith: { $exists: false }
+  }, {
+    $unset: {
+      removed: 1,
+      removedAt: 1,
+    },
+    ...extraUpdates
+  }, {
+    selector: { type: 'any' },
+  });
+  if (numUpdated === 0) restoreError();
+  return collection.updateAsync({
+    removedWith: doc._id,
+  }, {
+    $unset: {
+      removed: 1,
+      removedAt: 1,
+      removedWith: 1,
+    }
+  }, {
+    selector: { type: 'any' },
+    multi: true,
+  });
+}