spectrum/api/loaders/user.js

// @flow
import {
  getUsers,
  getUsersThreadCount,
  getUsersByUsername,
} from 'shared/db/queries/user';
import { getUsersPermissionsInCommunities } from '../models/usersCommunities';
import { getUsersPermissionsInChannels } from '../models/usersChannels';
import createLoader from './create-loader';

export const __createUserLoader = createLoader(users => getUsers(users), 'id');

export const __createUserByUsernameLoader = createLoader(
  users => getUsersByUsername(users),
  'username'
);

export const __createUserThreadCountLoader = createLoader(
  users => getUsersThreadCount(users),
  'id'
);

export const __createUserPermissionsInCommunityLoader = createLoader(
  usersCommunities => getUsersPermissionsInCommunities(usersCommunities),
  input => `${input.userId}|${input.communityId}`,
  key => (Array.isArray(key) ? `${key[0]}|${key[1]}` : key)
);

export const __createUserPermissionsInChannelLoader = createLoader(
  usersChannels => getUsersPermissionsInChannels(usersChannels),
  input => `${input.userId}|${input.channelId}`,
  key => (Array.isArray(key) ? `${key[0]}|${key[1]}` : key)
);

export default () => {
  throw new Error(
    '⚠️ Do not import loaders directly, get them from the GraphQL context instead! ⚠️'
  );
};