fix(docs): resolve type errors

docs/cursorInspector/cursorInspector.gs

@@ -74,11 +74,11 @@
 
 /**
  * Gets information about a given element.
- * @param {Element} element The element.
+ * @param {Object} element The element.
  * @return {Object} The information.
  */
 function getElementInfo(element) {
   return {
     type: String(element.getType())
   };
 }

docs/dialog2sidebar/Code.gs

@@ -38,7 +38,7 @@ function showSidebar() {
  * @return {string} The dialog ID.
  */
 function openDialog() {
-  var dialogId = Utilities.base64Encode(Math.random());
+  var dialogId = Utilities.base64Encode(String(Math.random()));
   var template = HtmlService.createTemplateFromFile('Dialog');
   template.dialogId = dialogId;
   var page = template.evaluate()

docs/quickstart/quickstart.gs

@@ -21,7 +21,8 @@
  */
 function printDocTitle() {
   const documentId = '195j9eDD3ccgjQRttHhJPymLJUCOUjs-jmwTrekvdjFE';
-  const doc = Docs.Documents.get(documentId, {'includeTabsContent': true});
+  const doc = /** @type {any} */ (Docs).Documents.get(documentId,
+      {'includeTabsContent': true});
   console.log(`The title of the doc is: ${doc.title}`);
 }
 // [END docs_quickstart]

docs/translate/translate.gs

@@ -87,7 +87,7 @@
         const element = elements[i].getElement();
         // Only translate elements that can be edited as text; skip images and
         // other non-text elements.
-        if (element.editAsText) {
+        if (element.getType() === DocumentApp.ElementType.TEXT) {
           const elementText = element.asText().getText();
           // This check is necessary to exclude images, which return a blank
           // text element.
@@ -190,42 +190,46 @@
         }
       } else {
         const element = elements[i].getElement();
-        if (!replaced && element.editAsText) {
-          // Only translate elements that can be edited as text, removing other
-          // elements.
-          element.clear();
-          element.asText().setText(newText);
+        // Only translate elements that can be edited as text; skip images and
+        // other non-text elements.
+        const type = element.getType();
+        if (!replaced && type === DocumentApp.ElementType.TEXT) {
+          const textElement = element.asText();
+          textElement.clear();
+          textElement.setText(newText);
           replaced = true;
         } else {
           // We cannot remove the last paragraph of a doc. If this is the case,
           // just clear the element.
           if (element.getNextSibling()) {
             element.removeFromParent();
-          } else {
-            element.clear();
+          } else if (type === DocumentApp.ElementType.TEXT) {
+            element.asText().clear();
           }
         }
       }
     }
   } else {
     const cursor = DocumentApp.getActiveDocument().getCursor();
-    const surroundingText = cursor.getSurroundingText().getText();
-    const surroundingTextOffset = cursor.getSurroundingTextOffset();
+    if (cursor) {
+      const surroundingText = cursor.getSurroundingText().getText();
+      const surroundingTextOffset = cursor.getSurroundingTextOffset();
 
-    // If the cursor follows or preceds a non-space character, insert a space
-    // between the character and the translation. Otherwise, just insert the
-    // translation.
-    if (surroundingTextOffset > 0) {
-      if (surroundingText.charAt(surroundingTextOffset - 1) !== ' ') {
-        newText = ' ' + newText;
+      // If the cursor follows or preceds a non-space character, insert a space
+      // between the character and the translation. Otherwise, just insert the
+      // translation.
+      if (surroundingTextOffset > 0) {
+        if (surroundingText.charAt(surroundingTextOffset - 1) !== ' ') {
+          newText = ' ' + newText;
+        }
       }
-    }
-    if (surroundingTextOffset < surroundingText.length) {
-      if (surroundingText.charAt(surroundingTextOffset) !== ' ') {
-        newText += ' ';
+      if (surroundingTextOffset < surroundingText.length) {
+        if (surroundingText.charAt(surroundingTextOffset) !== ' ') {
+          newText += ' ';
+        }
       }
+      cursor.insertText(newText);
     }
-    cursor.insertText(newText);
   }
 }