How to use the ember-resolver/ember-config function in ember-resolver

import Resolver from 'ember-resolver/resolvers/fallback';
import buildResolverConfig from 'ember-resolver/ember-config';
import config from '../config/environment';

let moduleConfig = buildResolverConfig(config.modulePrefix);

/*
 * If your application has custom types and collections, modify moduleConfig here
 * to add support for them.
 */

 moduleConfig.types = Object.assign({}, moduleConfig.types, { // NOTE: needed fast fastboot!
   ajax: { definitiveCollection: 'main' },
   mixin: { definitiveCollection: 'main' }
 });

export default Resolver.extend({
  config: moduleConfig
});

import Resolver from 'ember-resolver/resolvers/fallback';
// import Resolver from 'ember-resolver/resolvers/glimmer-wrapper';

import { merge } from '@ember/polyfills';

import buildResolverConfig from 'ember-resolver/ember-config';
import config from '../config/environment';

let moduleConfig = buildResolverConfig(config.modulePrefix);
/*
 * If your application has custom types and collections, modify moduleConfig here
 * to add support for them.
 */

merge(moduleConfig.types, {
  config: { definitiveCollection: 'main' },
  mixin: { definitiveCollection: 'main' },
  util: { definitiveCollection: 'utils' },
});

moduleConfig.collections.main.types.push('config');

export default Resolver.extend({
  config: moduleConfig,
});

import Resolver from 'ember-resolver/resolvers/glimmer-wrapper';
import buildResolverConfig from 'ember-resolver/ember-config';
import config from '../config/environment';

let moduleConfig = buildResolverConfig(config.modulePrefix);
/*
 * If your application has custom types and collections, modify moduleConfig here
 * to add support for them.
 */

export default Resolver.extend({
  config: moduleConfig
});

import Resolver from 'ember-resolver/resolvers/fallback';
import buildResolverConfig from 'ember-resolver/ember-config';
import config from '../config/environment';

let moduleConfig = buildResolverConfig(config.modulePrefix);
/*
 * If your application has custom types and collections, modify moduleConfig here
 * to add support for them.
 */

moduleConfig.types = Object.assign(moduleConfig.types, {
  config: { definitiveCollection: 'main' },
  'component-manager': { definitiveCollection: 'main' }
});

export default Resolver.extend({
  config: moduleConfig
});