oidc-provider/lib/helpers/initialize_adapter.js

OAuth 2.0 Authorization Server implementation for Node.js with OpenID Connect

import * as util from 'node:util';

import MemoryAdapter from '../adapters/memory_adapter.js';

import instance from './weak_cache.js';
import * as attention from './attention.js';
import isConstructable from './type_validators.js';

export default function initializeAdapter(adapter = MemoryAdapter) {
  if (adapter === MemoryAdapter) {
    attention.warn('a quick start development-only in-memory adapter is used, you MUST change it in'
    + ' order to not lose all stateful provider data upon restart and to be able to share these'
    + ' between processes');
  } else {
    const constructable = isConstructable(adapter);
    const executable = typeof adapter === 'function' && !util.types.isAsyncFunction(adapter);

    if (!constructable && !executable) {
      throw new Error('Expected "adapter" to be a constructor or a factory function, provide a valid adapter in Provider config.');
    }
  }

  instance(this).Adapter = adapter;
}