refactor(editor): remove assertExists (#10615)

blocksuite/affine/data-view/src/view-presets/kanban/pc/controller/drag.ts

@@ -1,6 +1,5 @@
 import type { InsertToPosition } from '@blocksuite/affine-shared/utils';
 import { Point, Rect } from '@blocksuite/global/gfx';
-import { assertExists } from '@blocksuite/global/utils';
 import { computed } from '@preact/signals-core';
 import type { ReactiveController } from 'lit';
 
@@ -137,7 +136,6 @@ export class KanbanDragController implements ReactiveController {
     const scrollContainer = this.host.querySelector(
       '.affine-data-view-kanban-groups'
     ) as HTMLElement;
-    assertExists(scrollContainer);
     return scrollContainer;
   }
 
@@ -213,7 +211,10 @@ const createDropPreview = () => {
       card?: KanbanCard
     ) {
       const target = card ?? group.querySelector('.add-card');
-      assertExists(target);
+      if (!target) {
+        console.error('`target` is not found');
+        return;
+      }
       if (target.previousElementSibling === self || target === self) {
         div.remove();
         return;

blocksuite/affine/data-view/src/view-presets/kanban/pc/controller/selection.ts

@@ -1,5 +1,4 @@
 import { BlockSuiteError, ErrorCode } from '@blocksuite/global/exceptions';
-import { assertExists } from '@blocksuite/global/utils';
 import type { ReactiveController } from 'lit';
 
 import type {
@@ -611,7 +610,7 @@ function getNextGroupFocusElement(
     selection.selectionType === 'cell'
       ? getFocusCell(viewElement, selection)
       : getSelectedCards(viewElement, selection)[0];
-  assertExists(element);
+  if (!element) return;
   const rect = element.getBoundingClientRect();
   const nextCards = Array.from(
     nextGroup.querySelectorAll('affine-data-view-kanban-card')

blocksuite/affine/data-view/src/view-presets/table/pc/cell.ts

@@ -1,9 +1,5 @@
 import { ShadowlessElement } from '@blocksuite/block-std';
-import {
-  assertExists,
-  SignalWatcher,
-  WithDisposable,
-} from '@blocksuite/global/utils';
+import { SignalWatcher, WithDisposable } from '@blocksuite/global/utils';
 import { computed } from '@preact/signals-core';
 import { css } from 'lit';
 import { property, state } from 'lit/decorators.js';
@@ -102,7 +98,6 @@ export class DatabaseCellContainer extends SignalWatcher(
 
   get table() {
     const table = this.closest('affine-database-table');
-    assertExists(table);
     return table;
   }