urlpayloadhandler.js

class UrlPayloadHandler
{
  constructor() {}
  base64Enc( inputUtf8Str ) { return Buffer.from(inputUtf8Str, "utf-8").toString("base64"); }
  base64Dec( inputB64Str  ) { return Buffer.from(inputB64Str, "base64").toString("utf-8");  }
  encodeUrlPayload( payloadString )        { return encodeURIComponent(this.base64Enc(payloadString));        }
  decodeUrlPayload( encodedPayloadString ) { return this.base64Dec(decodeURIComponent(encodedPayloadString)); }
  /* added atob & btoa for cross platform compatibilty (node & browser) as well as documenting their purposes */
  btoa = this.base64Enc;
  atob = this.base64Dec;
}

/*
const Print = console.log;
var emailPayloadTest = 'martin@example.com|Austin';

const UPH = new UrlPayloadHandler();

Print(`The email test payload ${emailPayloadTest} when encoded is: ${UPH.encodeUrlPayload(emailPayloadTest)}`);
Print(`The encoded email test payload ${UPH.encodeUrlPayload(emailPayloadTest)} when decoded is: ${UPH.decodeUrlPayload(UPH.encodeUrlPayload(emailPayloadTest))}`);
Print("")
Print(`Testing synthetic atob: ${UPH.atob("Testing123")}`)
Print(`Testing synthetic btoa: ${UPH.btoa(UPH.atob("Testing123"))}`)
*/

export default class { UrlPayloadHandler }