diff --git a/src/chart_types/xy_chart/annotations/annotation_tooltip.ts b/src/chart_types/xy_chart/annotations/annotation_tooltip.ts
index 1dedc7d438..7ee3f9946f 100644
--- a/src/chart_types/xy_chart/annotations/annotation_tooltip.ts
+++ b/src/chart_types/xy_chart/annotations/annotation_tooltip.ts
@@ -17,6 +17,7 @@
  * under the License. */
 
 import { Dimensions } from '../../../utils/dimensions';
+import { Position } from '../../../utils/commons';
 
 /** @internal */
 export function getFinalAnnotationTooltipPosition(
@@ -36,12 +37,12 @@ export function getFinalAnnotationTooltipPosition(
   anchor: 'left' | 'right';
 } {
   let left = 0;
-  let anchor: 'left' | 'right' = 'left' as 'left';
+  let anchor: Position = Position.Left;
 
   const annotationXOffset = window.pageXOffset + container.left + chartDimensions.left + tooltipAnchor.left;
   if (chartDimensions.left + tooltipAnchor.left + portalWidth + padding >= container.width) {
     left = annotationXOffset - portalWidth - padding;
-    anchor = 'right' as 'right';
+    anchor = Position.Right;
   } else {
     left = annotationXOffset + padding;
   }
diff --git a/src/chart_types/xy_chart/renderer/dom/annotation_tooltips.tsx b/src/chart_types/xy_chart/renderer/dom/annotation_tooltips.tsx
index fb3a953adf..b88ff7cf39 100644
--- a/src/chart_types/xy_chart/renderer/dom/annotation_tooltips.tsx
+++ b/src/chart_types/xy_chart/renderer/dom/annotation_tooltips.tsx
@@ -63,7 +63,7 @@ class AnnotationTooltipComponent extends React.Component<AnnotationTooltipProps>
    *
    * @unit px
    */
-  static maxWidth = 256;
+  static MAX_WIDTH = 256;
 
   constructor(props: AnnotationTooltipProps) {
     super(props);
@@ -77,7 +77,7 @@ class AnnotationTooltipComponent extends React.Component<AnnotationTooltipProps>
     } else {
       this.portalNode = document.createElement('div');
       this.portalNode.id = ANNOTATION_CONTAINER_ID;
-      this.portalNode.style.width = `${AnnotationTooltipComponent.maxWidth}px`;
+      this.portalNode.style.width = `${AnnotationTooltipComponent.MAX_WIDTH}px`;
       document.body.appendChild(this.portalNode);
     }
   }
@@ -103,7 +103,7 @@ class AnnotationTooltipComponent extends React.Component<AnnotationTooltipProps>
     }
 
     const chartContainerBBox = chartContainerRef.current.getBoundingClientRect();
-    const width = Math.min(AnnotationTooltipComponent.maxWidth, chartContainerBBox.width * 0.7);
+    const width = Math.min(AnnotationTooltipComponent.MAX_WIDTH, chartContainerBBox.width * 0.7);
     this.portalNode.style.width = `${width}px`;
     const tooltipBBox = this.tooltipRef.current.getBoundingClientRect();
     const tooltipStyle = getFinalAnnotationTooltipPosition(
diff --git a/src/components/tooltip/tooltip_portal.tsx b/src/components/tooltip/tooltip_portal.tsx
index bc14fa8d6c..8033637d50 100644
--- a/src/components/tooltip/tooltip_portal.tsx
+++ b/src/components/tooltip/tooltip_portal.tsx
@@ -49,7 +49,7 @@ class TooltipPortalComponent extends React.Component<TooltipPortalProps> {
    *
    * @unit px
    */
-  static maxWidth = 256;
+  static MAX_WIDTH = 256;
   portalNode: HTMLDivElement | null = null;
   tooltipRef: React.RefObject<HTMLDivElement>;
 
@@ -64,7 +64,7 @@ class TooltipPortalComponent extends React.Component<TooltipPortalProps> {
     } else {
       this.portalNode = document.createElement('div');
       this.portalNode.id = 'echTooltipContainerPortal';
-      this.portalNode.style.width = `${TooltipPortalComponent.maxWidth}px`;
+      this.portalNode.style.width = `${TooltipPortalComponent.MAX_WIDTH}px`;
       document.body.appendChild(this.portalNode);
     }
   }
@@ -83,7 +83,7 @@ class TooltipPortalComponent extends React.Component<TooltipPortalProps> {
 
     const chartContainerBBox = chartContainerRef.current.getBoundingClientRect();
     const tooltipBBox = this.tooltipRef.current.getBoundingClientRect();
-    const width = Math.min(TooltipPortalComponent.maxWidth, chartContainerBBox.width * 0.7);
+    const width = Math.min(TooltipPortalComponent.MAX_WIDTH, chartContainerBBox.width * 0.7);
     this.portalNode.style.width = `${width}px`;
     const tooltipStyle = getFinalTooltipPosition(chartContainerBBox, tooltipBBox, width, position);