DomURLAsRequestAdapter (using the Adapter pattern)

DomURLAsRequestAdapter.ts

/**
 * Use design pattern Adapter to implement DomURLAsRequestAdapter that would adapt DomURL as Request
 */

export interface Request {
  getOrigin(): string
  getPath(): Array<string>
}

export class DomURL {
  public constructor(public readonly path: string) {}
}

/**
 * @example
 *  const domURL = new DomURL('https://example.com/my/long/path/');
 *  const domURLAsRequestAdapter = new DomURLAsRequestAdapter(domURL);
 *  domURLAsRequestAdapter.getOrigin(); // https://example.com
 *  domURLAsRequestAdapter.getPath();   // ['my', 'long', 'path']
 */
export class DomURLAsRequestAdapter implements Request {
  public domURL: DomURL;

  public constructor(domURL: DomURL){
    this.domURL = domURL;
  }

  public getOrigin(): string {
    const url = new URL(this.domURL.path);
    return url.origin;
  }

  public getPath(): Array<string> {
    const url = new URL(this.domURL.path);
    return url.pathname.replace(/^\//, '').replace(/\/$/, '').split('/');
  }
}