oidc-provider/lib/helpers/redirect_uri.js

OAuth 2.0 Authorization Server implementation for Node.js with OpenID Connect

export default function redirectUri(uri, payload, mode) {
  const parsed = new URL(uri);

  switch (mode) {
    case 'fragment':
      parsed.hash = new URLSearchParams(payload).toString();
      break;
    default:
      for (const [k, v] of Object.entries(payload)) {
        parsed.searchParams.set(k, v);
      }
      break;
  }

  return parsed.href;
}