Paths to the endpoints

helpers.ts

import { v4 as uuidv4 } from 'uuid'

export namespace Helpers {
  export function randomUUID() {
    return uuidv4()
  }
}

index.ts

import { Tools } from './tools'

// Tools.Helpers.randomUUID()
// Tools.Urls.base()

tools.ts

import * as Helpers from './helpers'
import * as Urls from './urls'

export namespace Tools {
  export namespace Helpers
  export namespace Urls
}

urls.ts

export namespace Urls {
  export function base(): string { return this._baseUrl }
}