fix: do not throw error when adding a new row while a column is hidden

Author: sosa-vaadin

packages/vaadin-grid/src/vaadin-grid-column.js

@@ -310,6 +310,11 @@ export const ColumnBaseMixin = (superClass) =>
 
     /** @private */
     __setColumnTemplateOrRenderer(template, renderer, cells) {
+      // no renderer or template needed in a hidden column
+      if (this.hidden) {
+        return;
+      }
+
       if (template && renderer) {
         throw new Error('You should only use either a renderer or a template');
       }

packages/vaadin-grid/test/column.test.js

@@ -186,6 +186,12 @@ describe('column', () => {
         const details = grid.shadowRoot.querySelector('#items [part~="details-cell"]')._content;
         expect(details.textContent).to.equal('row-details');
       });
+
+      it('should not throw error when adding a new row with a hidden column', () => {
+        column.hidden = true;
+        flushGrid(grid);
+        expect(() => (grid.size = 11)).to.not.throw(Error);
+      });
     });
 
     describe('path', () => {