Authentication with keycloak.js

Hi, i'm using keycloak to protect swagger document in my backend node app. and i want to use config.js to protect my keycloak configuration on object declared in config file.
"keycloak": {
"serverUrl": "url",
"realm": "realmName",
"clientId": "clientId"
},

Q&A (please complete the following information)

• OS: ubuntu 18.04
• Browser: chromium
• Method of installation: npm
• swagger-ui-dist version: 3.13.4

Content & configuration

in index.html file:
` <script>
var keycloak = Keycloak({
"realm": "realmName",
"url": "url",
"clientId": "clientId"
});
keycloak.init({ onLoad: 'login-required' }).success(() => {
// Build a system
const ui = SwaggerUIBundle({
url: "./swagger.json",
urls: [
{
url:"./swagger.json",
name: 'Docs1'
},
{
url: 'http://Docs2',
name: 'Docs2'
},
{
url: 'http://Docs3',
name: 'Docs3'
},
],
validatorUrl: null,
dom_id: '#swagger-ui',
requestInterceptor: (req) => {
if (req.loadSpec) {
keycloak.updateToken(5).success(function() {
req.headers = { 'authorization': 'Bearer ' + keycloak.token };

});

}
return req;

},
deepLinking: true,
presets: [
SwaggerUIBundle.presets.apis,
SwaggerUIStandalonePreset
],
plugins: [
SwaggerUIBundle.plugins.DownloadUrl
],
layout: "StandaloneLayout",

})
window.ui = ui;

};
</script>
`

The report only shows an index.html integration using keycloak.js and SwaggerUIBundle.requestInterceptor; start by clarifying whether the expected change is support for config.js or a request-interception issue. Reproduce with swagger-ui-dist 3.13.4 on Chromium and define done as a documented, working authentication flow.