Error in the JS snippet provided at https://developer.paypal.com/docs/integration/direct/identity/button-js-builder/

lipp-button.js

// Source at https://developer.paypal.com/js/pages/docs/integration/direct/identity/lipp-button.js

//...

    function _getConfig() {
      var confObj = {};
      var builders = buildForm.querySelectorAll('input, select');
      var i = 0;
      var el;

      for (i; i < builders.length; i++) {
        el = builders[i];

        if (!/^\s*$/.test(el.value)) {
          if (el.type === 'radio') {
            if (el.checked) {
              confObj[el.name] = el.value;
            }
          } else if (el.id === 'appid' || el.id === 'containerid') {
            confObj[el.id] = el.value.replace(/[^\w\d-]/g, '');
            el.value = confObj[el.id];
          } else {
            confObj[el.id] = el.value.replace(/,/g, '').replace(/(<([^>]+)>)/ig, '');
          }
        }
      }

      return confObj;
    }

// ...

    function init() {
      if ('addEventListener' in document && 'getComputedStyle' in window && 'textContent' in document) {
        _initLocaleSelect();
        
        // This call to _buildSnippet is generating a BROKEN snippet on initial page load...
          _buildSnippet();
        // ...because  it ignores empty fields (see _getConfig()) and therefore its call
        // MUST happen after the initialization of buttonSize OR the management of buttonSize
        // at https://www.paypalobjects.com/js/external/connect/login.js MUST be different.
        _initButtonType();
        _initButtonSize();

        buildForm
          .addEventListener('change', function () {
            _buildSnippet();
          });
      }
    }
// ...

login.js

// Source at https://www.paypalobjects.com/js/external/connect/login.js

//...

getTranslation: function(n) {
    var t = n || {}
      , e = t.text
      , a = t.locale
      , o = t.buttonSize
      , i = "LWP" === t.labelType ? this.logInTranslations : this.connectTranslation;
    return e || (a || (a = navigator.language || navigator.userLanguage),
    2 === a.length && (a = a + "-" + a),
                  
    // If o (buttonSize is undefined getTranslation() return void(0) aka undefined)
    // If buttonSize is optional by design and it has not been defined in the config
    // i[a].lg_content should be return instead of undefined
    i[a = a.replace(/_/, "-").toLowerCase()] ? o ? "lg" === o ? i[a].lg_content : i[a].sm_content : void 0 : i["en-us"].lg_content)
},

//...
//Then in the render function…
var t = "sandbox" === n.authend ? "https://www.sandbox.paypal.com/signin/authorize" : "https://www.paypal.com/signin/authorize"
  , e = n.appid || null
  , a = n.returnurl || null
  , o = n.scopes || "basic"
  , i = n.containerid ? document.getElementById(n.containerid) : n.containerelement ? n.containerelement : x
  , r = n.responseType || "code"
  , l = n.prompt
  , c = n.state
  , s = (n.openIdUiMode,
         
// …this shows always the english text if buttonSize has not been provided
// as it's the case on the example snippet provided at 
// https://developer.paypal.com/docs/integration/direct/identity/button-js-builder/
         
f.getTranslation(n) || "Connect with PayPal")
  , g = n.theme && "neutral" === n.theme.toLowerCase() ? "" : " PPBlue_V2"
  , m = {
    flowEntry: "lg" === n.buttonSize ? "CWPP_large" : "CWPP_small",
    client_id: e,
    response_type: r,
    scope: o,
    redirect_uri: encodeURIComponent(a),
    nonce: f.createRandomNumber(),
    newUI: "Y",
    prompt: l,
    state: c
}
//...