diff --git a/src/plugins/charts/common/static/components/collections.ts b/src/plugins/charts/common/static/components/collections.ts
index 1f138ab9f7b0e..acb11c647fead 100644
--- a/src/plugins/charts/common/static/components/collections.ts
+++ b/src/plugins/charts/common/static/components/collections.ts
@@ -20,6 +20,7 @@ export const LabelRotation = Object.freeze({
   Horizontal: 0,
   Vertical: 90,
   Angled: 75,
+  VerticalRotation: 270,
 });
 export type LabelRotation = $Values<typeof LabelRotation>;
 
diff --git a/src/plugins/expressions/common/execution/execution.ts b/src/plugins/expressions/common/execution/execution.ts
index 1e010be4e9557..7b4e02df0a3d8 100644
--- a/src/plugins/expressions/common/execution/execution.ts
+++ b/src/plugins/expressions/common/execution/execution.ts
@@ -420,21 +420,18 @@ export class Execution<
             : of(resolvedArgs);
 
           return args$.pipe(
-            // @ts-expect-error upgrade to ts v4.7.4
-            tap((args) => this.execution.params.debug && Object.assign(head.debug, { args })),
+            tap((args) => this.execution.params.debug && { ...head.debug, args }),
             switchMap((args) => this.invokeFunction(fn, input, args)),
             this.execution.params.partial ? identity : last(),
             switchMap((output) => (getType(output) === 'error' ? throwError(output) : of(output))),
-            // @ts-expect-error upgrade to ts v4.7.4
-            tap((output) => this.execution.params.debug && Object.assign(head.debug, { output })),
+            tap((output) => this.execution.params.debug && { ...head.debug, output }),
             switchMap((output) => this.invokeChain<ChainOutput>(tail, output)),
             catchError((rawError) => {
               const error = createError(rawError);
               error.error.message = `[${fnName}] > ${error.error.message}`;
 
               if (this.execution.params.debug) {
-                // @ts-expect-error upgrade to ts v4.7.4
-                Object.assign(head.debug, { error, rawError, success: false });
+                Object.assign(head.debug ?? {}, { error, rawError, success: false });
               }
 
               return of(error);
diff --git a/src/plugins/vis_types/heatmap/public/editor/components/labels_panel.tsx b/src/plugins/vis_types/heatmap/public/editor/components/labels_panel.tsx
index 59e4a20c8aac1..0b16e538fb481 100644
--- a/src/plugins/vis_types/heatmap/public/editor/components/labels_panel.tsx
+++ b/src/plugins/vis_types/heatmap/public/editor/components/labels_panel.tsx
@@ -25,7 +25,6 @@ interface LabelsPanelProps {
 }
 
 function LabelsPanel({ valueAxis, setValue, isNewLibrary }: LabelsPanelProps) {
-  // @ts-expect-error ts upgrade v4.7.4
   const rotateLabels = valueAxis.labels.rotate === VERTICAL_ROTATION;
 
   const setValueAxisLabels = useCallback(
@@ -44,7 +43,6 @@ function LabelsPanel({ valueAxis, setValue, isNewLibrary }: LabelsPanelProps) {
 
   const setRotateLabels = useCallback(
     (paramName: 'rotate', value: boolean) =>
-      // @ts-expect-error ts upgrade v4.7.4
       setValueAxisLabels(paramName, value ? VERTICAL_ROTATION : 0),
     [setValueAxisLabels]
   );
diff --git a/src/plugins/vis_types/xy/public/editor/components/options/metrics_axes/label_options.tsx b/src/plugins/vis_types/xy/public/editor/components/options/metrics_axes/label_options.tsx
index fa5d9547e8157..3310df7259df6 100644
--- a/src/plugins/vis_types/xy/public/editor/components/options/metrics_axes/label_options.tsx
+++ b/src/plugins/vis_types/xy/public/editor/components/options/metrics_axes/label_options.tsx
@@ -13,7 +13,7 @@ import { i18n } from '@kbn/i18n';
 import { FormattedMessage } from '@kbn/i18n-react';
 
 import { SelectOption, SwitchOption } from '@kbn/vis-default-editor-plugin/public';
-import { Labels } from '@kbn/charts-plugin/public';
+import type { LabelRotation, Labels } from '@kbn/charts-plugin/public';
 
 import { TruncateLabelsOption } from '../../common';
 import { getRotateOptions } from '../../../collections';
@@ -34,8 +34,8 @@ function LabelOptions({
 }: LabelOptionsProps) {
   const setAxisLabelRotate = useCallback(
     (paramName: 'rotate', value: Labels['rotate']) => {
-      // @ts-expect-error ts upgrade v4.7.4
-      setAxisLabel(paramName, Number(value));
+      const rotation = Number(value) as LabelRotation;
+      setAxisLabel(paramName, rotation);
     },
     [setAxisLabel]
   );