Move the base element into its own file

src/base-element.js

+import {AdapterLitElement} from "@dbp-toolkit/provider/src/adapter-lit-element";
+
+export class BaseLitElement extends AdapterLitElement {
+    constructor() {
+        super();
+        this.auth = {};
+    }
+
+    static get properties() {
+        return {
+            ...super.properties,
+            auth: { type: Object },
+        };
+    }
+
+    _(selector) {
+        return this.shadowRoot === null ? this.querySelector(selector) : this.shadowRoot.querySelector(selector);
+    }
+
+    _hasSignaturePermissions(roleName) {
+        return (this.auth.person && Array.isArray(this.auth.person.roles) && this.auth.person.roles.indexOf(roleName) !== -1);
+    }
+
+    _updateAuth() {
+        this._loginStatus = this.auth['login-status'];
+        // Every time isLoggedIn()/isLoading() return something different we request a re-render
+        let newLoginState = [this.isLoggedIn(), this.isLoading()];
+        if (this._loginState.toString() !== newLoginState.toString()) {
+            this.requestUpdate();
+        }
+        this._loginState = newLoginState;
+    }
+
+    update(changedProperties) {
+        changedProperties.forEach((oldValue, propName) => {
+            switch (propName) {
+                case "auth":
+                    this._updateAuth();
+                    break;
+            }
+        });
+
+        super.update(changedProperties);
+    }
+
+    connectedCallback() {
+        super.connectedCallback();
+
+        this._loginStatus = '';
+        this._loginState = [];
+    }
+
+    isLoggedIn() {
+        return (this.auth.person !== undefined && this.auth.person !== null);
+    }
+
+    isLoading() {
+        if (this._loginStatus === "logged-out")
+            return false;
+        return (!this.isLoggedIn() && this.auth.token !== undefined);
+    }
+}

src/dbp-signature-lit-element.js

 import * as utils from "./utils";
-import {AdapterLitElement} from "@dbp-toolkit/provider/src/adapter-lit-element";
 import * as commonUtils from "@dbp-toolkit/common/utils";
+import {BaseLitElement} from './base-element.js';
 
-export class DBPSignatureBaseLitElement extends AdapterLitElement {
-    constructor() {
-        super();
-        this.auth = {};
-    }
-
-    static get properties() {
-        return {
-            ...super.properties,
-            auth: { type: Object },
-        };
-    }
-
-    _(selector) {
-        return this.shadowRoot === null ? this.querySelector(selector) : this.shadowRoot.querySelector(selector);
-    }
-
-    _hasSignaturePermissions(roleName) {
-        return (this.auth.person && Array.isArray(this.auth.person.roles) && this.auth.person.roles.indexOf(roleName) !== -1);
-    }
-
-    _updateAuth() {
-        this._loginStatus = this.auth['login-status'];
-        // Every time isLoggedIn()/isLoading() return something different we request a re-render
-        let newLoginState = [this.isLoggedIn(), this.isLoading()];
-        if (this._loginState.toString() !== newLoginState.toString()) {
-            this.requestUpdate();
-        }
-        this._loginState = newLoginState;
-    }
-
-    update(changedProperties) {
-        changedProperties.forEach((oldValue, propName) => {
-            switch (propName) {
-                case "auth":
-                    this._updateAuth();
-                    break;
-            }
-        });
-
-        super.update(changedProperties);
-    }
-
-    connectedCallback() {
-        super.connectedCallback();
-
-        this._loginStatus = '';
-        this._loginState = [];
-    }
-
-    isLoggedIn() {
-        return (this.auth.person !== undefined && this.auth.person !== null);
-    }
-
-    isLoading() {
-        if (this._loginStatus === "logged-out")
-            return false;
-        return (!this.isLoggedIn() && this.auth.token !== undefined);
-    }
-}
-
-export default class DBPSignatureLitElement extends DBPSignatureBaseLitElement {
+export default class DBPSignatureLitElement extends BaseLitElement {
     constructor() {
         super();
         this.queuedFiles = [];