diff --git a/web/utils/tooltip-action-utils.js b/web/utils/tooltip-action-utils.js
index 33fc98c17..ee6493b26 100644
--- a/web/utils/tooltip-action-utils.js
+++ b/web/utils/tooltip-action-utils.js
@@ -1,482 +1,442 @@
 // @flow
 
 import invariant from 'invariant';
 import * as React from 'react';
 
 import { useModalContext } from 'lib/components/modal-provider.react.js';
 import { useResettingState } from 'lib/hooks/use-resetting-state.js';
 import type { ChatMessageInfoItem } from 'lib/selectors/chat-selectors.js';
 import { useCanEditMessage } from 'lib/shared/edit-messages-utils.js';
 import { createMessageReply } from 'lib/shared/message-utils.js';
 import { useCanCreateReactionFromMessage } from 'lib/shared/reaction-utils.js';
 import {
   threadHasPermission,
   useSidebarExistsOrCanBeCreated,
 } from 'lib/shared/thread-utils.js';
 import { messageTypes } from 'lib/types/message-types-enum.js';
 import { isComposableMessageType } from 'lib/types/message-types.js';
 import { threadPermissions } from 'lib/types/thread-permission-types.js';
 import type { ThreadInfo } from 'lib/types/thread-types.js';
 import { longAbsoluteDate } from 'lib/utils/date-utils.js';
 
 import {
   type MessageTooltipAction,
-  findTooltipPosition,
-  getTooltipStyle,
+  getTooltipPositionStyle,
   calculateTooltipSize,
-  type TooltipSize,
   type TooltipPosition,
 } from './tooltip-utils.js';
 import { getComposedMessageID } from '../chat/chat-constants.js';
 import { useEditModalContext } from '../chat/edit-message-provider.js';
 import MessageTooltip from '../chat/message-tooltip.react.js';
-import type { PositionInfo } from '../chat/position-types.js';
 import { useTooltipContext } from '../chat/tooltip-provider.js';
 import CommIcon from '../CommIcon.react.js';
 import { InputStateContext } from '../input/input-state.js';
 import TogglePinModal from '../modals/chat/toggle-pin-modal.react.js';
 import {
   useOnClickPendingSidebar,
   useOnClickThread,
 } from '../selectors/thread-selectors.js';
 
 function useMessageTooltipSidebarAction(
   item: ChatMessageInfoItem,
   threadInfo: ThreadInfo,
 ): ?MessageTooltipAction {
   const { threadCreatedFromMessage, messageInfo } = item;
   const { popModal } = useModalContext();
   const sidebarExists = !!threadCreatedFromMessage;
   const sidebarExistsOrCanBeCreated = useSidebarExistsOrCanBeCreated(
     threadInfo,
     item,
   );
   const openThread = useOnClickThread(threadCreatedFromMessage);
   const openPendingSidebar = useOnClickPendingSidebar(messageInfo, threadInfo);
   return React.useMemo(() => {
     if (!sidebarExistsOrCanBeCreated) {
       return null;
     }
     const buttonContent = <CommIcon icon="sidebar-filled" size={16} />;
     const onClick = (event: SyntheticEvent<HTMLElement>) => {
       popModal();
 
       if (threadCreatedFromMessage) {
         openThread(event);
       } else {
         openPendingSidebar(event);
       }
     };
     return {
       actionButtonContent: buttonContent,
       onClick,
       label: sidebarExists ? 'Go to thread' : 'Create thread',
     };
   }, [
     popModal,
     openPendingSidebar,
     openThread,
     sidebarExists,
     sidebarExistsOrCanBeCreated,
     threadCreatedFromMessage,
   ]);
 }
 
 function useMessageTooltipReplyAction(
   item: ChatMessageInfoItem,
   threadInfo: ThreadInfo,
 ): ?MessageTooltipAction {
   const { messageInfo } = item;
   const { popModal } = useModalContext();
   const inputState = React.useContext(InputStateContext);
   invariant(inputState, 'inputState is required');
   const { addReply } = inputState;
   return React.useMemo(() => {
     if (
       item.messageInfo.type !== messageTypes.TEXT ||
       !threadHasPermission(threadInfo, threadPermissions.VOICED)
     ) {
       return null;
     }
     const buttonContent = <CommIcon icon="reply-filled" size={18} />;
     const onClick = () => {
       popModal();
 
       if (!messageInfo.text) {
         return;
       }
       addReply(createMessageReply(messageInfo.text));
     };
     return {
       actionButtonContent: buttonContent,
       onClick,
       label: 'Reply',
     };
   }, [popModal, addReply, item.messageInfo.type, messageInfo, threadInfo]);
 }
 
 const copiedMessageDurationMs = 2000;
 function useMessageCopyAction(
   item: ChatMessageInfoItem,
 ): ?MessageTooltipAction {
   const { messageInfo } = item;
 
   const [successful, setSuccessful] = useResettingState(
     false,
     copiedMessageDurationMs,
   );
 
   return React.useMemo(() => {
     if (messageInfo.type !== messageTypes.TEXT) {
       return null;
     }
     const buttonContent = <CommIcon icon="copy-filled" size={18} />;
     const onClick = async () => {
       try {
         await navigator.clipboard.writeText(messageInfo.text);
         setSuccessful(true);
       } catch (e) {
         setSuccessful(false);
       }
     };
     return {
       actionButtonContent: buttonContent,
       onClick,
       label: successful ? 'Copied!' : 'Copy',
     };
   }, [messageInfo.text, messageInfo.type, setSuccessful, successful]);
 }
 
 function useMessageReactAction(
   item: ChatMessageInfoItem,
   threadInfo: ThreadInfo,
 ): ?MessageTooltipAction {
   const { messageInfo } = item;
 
   const { setShouldRenderEmojiKeyboard } = useTooltipContext();
 
   const canCreateReactionFromMessage = useCanCreateReactionFromMessage(
     threadInfo,
     messageInfo,
   );
 
   return React.useMemo(() => {
     if (!canCreateReactionFromMessage) {
       return null;
     }
 
     const buttonContent = <CommIcon icon="emote-smile-filled" size={18} />;
 
     const onClickReact = () => {
       if (!setShouldRenderEmojiKeyboard) {
         return;
       }
       setShouldRenderEmojiKeyboard(true);
     };
 
     return {
       actionButtonContent: buttonContent,
       onClick: onClickReact,
       label: 'React',
     };
   }, [canCreateReactionFromMessage, setShouldRenderEmojiKeyboard]);
 }
 
 function useMessageTogglePinAction(
   item: ChatMessageInfoItem,
   threadInfo: ThreadInfo,
 ): ?MessageTooltipAction {
   const { pushModal } = useModalContext();
   const { messageInfo, isPinned } = item;
 
   const canTogglePin =
     isComposableMessageType(messageInfo.type) &&
     threadHasPermission(threadInfo, threadPermissions.MANAGE_PINS);
 
   const inputState = React.useContext(InputStateContext);
 
   return React.useMemo(() => {
     if (!canTogglePin) {
       return null;
     }
 
     const iconName = isPinned ? 'unpin' : 'pin';
 
     const buttonContent = <CommIcon icon={iconName} size={18} />;
 
     const onClickTogglePin = () => {
       pushModal(
         <InputStateContext.Provider value={inputState}>
           <TogglePinModal item={item} threadInfo={threadInfo} />
         </InputStateContext.Provider>,
       );
     };
 
     return {
       actionButtonContent: buttonContent,
       onClick: onClickTogglePin,
       label: isPinned ? 'Unpin' : 'Pin',
     };
   }, [canTogglePin, inputState, isPinned, pushModal, item, threadInfo]);
 }
 
 function useMessageEditAction(
   item: ChatMessageInfoItem,
   threadInfo: ThreadInfo,
 ): ?MessageTooltipAction {
   const { messageInfo } = item;
 
   const canEditMessage = useCanEditMessage(threadInfo, messageInfo);
   const { renderEditModal, scrollToMessage } = useEditModalContext();
   const { clearTooltip } = useTooltipContext();
 
   return React.useMemo(() => {
     if (!canEditMessage) {
       return null;
     }
     const buttonContent = <CommIcon icon="edit-filled" size={18} />;
     const onClickEdit = () => {
       const callback = (maxHeight: number) =>
         renderEditModal({
           messageInfo: item,
           threadInfo,
           isError: false,
           editedMessageDraft: messageInfo.text,
           maxHeight: maxHeight,
         });
       clearTooltip();
       scrollToMessage(getComposedMessageID(messageInfo), callback);
     };
     return {
       actionButtonContent: buttonContent,
       onClick: onClickEdit,
       label: 'Edit',
     };
   }, [
     canEditMessage,
     clearTooltip,
     item,
     messageInfo,
     renderEditModal,
     scrollToMessage,
     threadInfo,
   ]);
 }
 
 function useMessageTooltipActions(
   item: ChatMessageInfoItem,
   threadInfo: ThreadInfo,
 ): $ReadOnlyArray<MessageTooltipAction> {
   const sidebarAction = useMessageTooltipSidebarAction(item, threadInfo);
   const replyAction = useMessageTooltipReplyAction(item, threadInfo);
   const copyAction = useMessageCopyAction(item);
   const reactAction = useMessageReactAction(item, threadInfo);
   const togglePinAction = useMessageTogglePinAction(item, threadInfo);
   const editAction = useMessageEditAction(item, threadInfo);
   return React.useMemo(
     () =>
       [
         replyAction,
         sidebarAction,
         copyAction,
         reactAction,
         togglePinAction,
         editAction,
       ].filter(Boolean),
     [
       replyAction,
       sidebarAction,
       copyAction,
       reactAction,
       togglePinAction,
       editAction,
     ],
   );
 }
 
 type UseMessageTooltipArgs = {
   +availablePositions: $ReadOnlyArray<TooltipPosition>,
   +item: ChatMessageInfoItem,
   +threadInfo: ThreadInfo,
 };
 
 type UseMessageTooltipResult = {
   onMouseEnter: (event: SyntheticEvent<HTMLElement>) => void,
   onMouseLeave: ?() => mixed,
 };
 
-type GetTooltipPositionStyleParams = {
-  +tooltipSourcePosition: ?PositionInfo,
-  +tooltipSize: TooltipSize,
-  +availablePositions: $ReadOnlyArray<TooltipPosition>,
-  +preventDisplayingBelowSource?: boolean,
-};
-
-function getTooltipPositionStyle(params: GetTooltipPositionStyleParams) {
-  const {
-    tooltipSourcePosition,
-    tooltipSize,
-    availablePositions,
-    preventDisplayingBelowSource,
-  } = params;
-  if (!tooltipSourcePosition) {
-    return undefined;
-  }
-  const tooltipPosition = findTooltipPosition({
-    sourcePositionInfo: tooltipSourcePosition,
-    tooltipSize,
-    availablePositions,
-    defaultPosition: availablePositions[0],
-    preventDisplayingBelowSource,
-  });
-  if (!tooltipPosition) {
-    return undefined;
-  }
-
-  const tooltipPositionStyle = getTooltipStyle({
-    tooltipPosition,
-    sourcePositionInfo: tooltipSourcePosition,
-    tooltipSize,
-  });
-
-  return tooltipPositionStyle;
-}
-
 function useMessageTooltip({
   availablePositions,
   item,
   threadInfo,
 }: UseMessageTooltipArgs): UseMessageTooltipResult {
   const [onMouseLeave, setOnMouseLeave] = React.useState<?() => mixed>(null);
 
   const { renderTooltip } = useTooltipContext();
   const tooltipActions = useMessageTooltipActions(item, threadInfo);
 
   const containsInlineEngagement = !!item.threadCreatedFromMessage;
 
   const messageTimestamp = React.useMemo(() => {
     const time = item.messageInfo.time;
     return longAbsoluteDate(time);
   }, [item.messageInfo.time]);
 
   const tooltipSize = React.useMemo(() => {
     if (typeof document === 'undefined') {
       return {
         width: 0,
         height: 0,
       };
     }
     const tooltipLabels = tooltipActions.map(action => action.label);
     return calculateTooltipSize({
       tooltipLabels,
       timestamp: messageTimestamp,
     });
   }, [messageTimestamp, tooltipActions]);
 
   const updateTooltip = React.useRef();
   const [tooltipMessagePosition, setTooltipMessagePosition] = React.useState();
 
   const onMouseEnter = React.useCallback(
     (event: SyntheticEvent<HTMLElement>) => {
       if (!renderTooltip) {
         return;
       }
       const rect = event.currentTarget.getBoundingClientRect();
       const { top, bottom, left, right, height, width } = rect;
       const messagePosition = { top, bottom, left, right, height, width };
       setTooltipMessagePosition(messagePosition);
 
       const tooltipPositionStyle = getTooltipPositionStyle({
         tooltipSourcePosition: messagePosition,
         tooltipSize,
         availablePositions,
         preventDisplayingBelowSource: containsInlineEngagement,
       });
 
       if (!tooltipPositionStyle) {
         return;
       }
 
       const tooltip = (
         <MessageTooltip
           actions={tooltipActions}
           messageTimestamp={messageTimestamp}
           tooltipPositionStyle={tooltipPositionStyle}
           tooltipSize={tooltipSize}
           item={item}
           threadInfo={threadInfo}
         />
       );
       const renderTooltipResult = renderTooltip({
         newNode: tooltip,
         tooltipPositionStyle,
       });
       if (renderTooltipResult) {
         const { onMouseLeaveCallback: callback } = renderTooltipResult;
         setOnMouseLeave((() => callback: () => () => mixed));
         updateTooltip.current = renderTooltipResult.updateTooltip;
       }
     },
     [
       availablePositions,
       containsInlineEngagement,
       item,
       messageTimestamp,
       renderTooltip,
       threadInfo,
       tooltipActions,
       tooltipSize,
     ],
   );
 
   React.useEffect(() => {
     if (!updateTooltip.current) {
       return;
     }
 
     const tooltipPositionStyle = getTooltipPositionStyle({
       tooltipSourcePosition: tooltipMessagePosition,
       tooltipSize,
       availablePositions,
       preventDisplayingBelowSource: containsInlineEngagement,
     });
     if (!tooltipPositionStyle) {
       return;
     }
 
     const tooltip = (
       <MessageTooltip
         actions={tooltipActions}
         messageTimestamp={messageTimestamp}
         tooltipPositionStyle={tooltipPositionStyle}
         tooltipSize={tooltipSize}
         item={item}
         threadInfo={threadInfo}
       />
     );
 
     updateTooltip.current?.(tooltip);
   }, [
     availablePositions,
     containsInlineEngagement,
     item,
     messageTimestamp,
     threadInfo,
     tooltipActions,
     tooltipMessagePosition,
     tooltipSize,
   ]);
 
   return {
     onMouseEnter,
     onMouseLeave,
   };
 }
 
 export {
   useMessageTooltipSidebarAction,
   useMessageTooltipReplyAction,
   useMessageReactAction,
   useMessageTooltipActions,
   useMessageTooltip,
 };
diff --git a/web/utils/tooltip-utils.js b/web/utils/tooltip-utils.js
index bc0e74ebd..cef0b52d6 100644
--- a/web/utils/tooltip-utils.js
+++ b/web/utils/tooltip-utils.js
@@ -1,320 +1,359 @@
 // @flow
 
 import invariant from 'invariant';
 import * as React from 'react';
 
 import { getAppContainerPositionInfo } from './window-utils.js';
 import {
   tooltipButtonStyle,
   tooltipLabelStyle,
   tooltipStyle,
 } from '../chat/chat-constants.js';
 import type { PositionInfo } from '../chat/position-types.js';
 import { calculateMaxTextWidth } from '../utils/text-utils.js';
 
 export const tooltipPositions = Object.freeze({
   LEFT: 'left',
   RIGHT: 'right',
   LEFT_BOTTOM: 'left-bottom',
   RIGHT_BOTTOM: 'right-bottom',
   LEFT_TOP: 'left-top',
   RIGHT_TOP: 'right-top',
   TOP: 'top',
   BOTTOM: 'bottom',
 });
 
 export type TooltipSize = {
   +height: number,
   +width: number,
 };
 
 export type TooltipPositionStyle = {
   +anchorPoint: {
     +x: number,
     +y: number,
   },
   +verticalPosition: 'top' | 'bottom',
   +horizontalPosition: 'left' | 'right',
   +alignment: 'left' | 'center' | 'right',
 };
 
 export type TooltipPosition = $Values<typeof tooltipPositions>;
 
 export type MessageTooltipAction = {
   +label: string,
   +onClick: (SyntheticEvent<HTMLDivElement>) => mixed,
   +actionButtonContent: React.Node,
 };
 
 const font =
   '14px "Inter", -apple-system, "Segoe UI", "Roboto", "Oxygen", "Ubuntu", ' +
   '"Cantarell", "Fira Sans", "Droid Sans", "Helvetica Neue", ui-sans-serif';
 
 type FindTooltipPositionArgs = {
   +sourcePositionInfo: PositionInfo,
   +tooltipSize: TooltipSize,
   +availablePositions: $ReadOnlyArray<TooltipPosition>,
   +defaultPosition: TooltipPosition,
   +preventDisplayingBelowSource?: boolean,
 };
 
 function findTooltipPosition({
   sourcePositionInfo,
   tooltipSize,
   availablePositions,
   defaultPosition,
   preventDisplayingBelowSource,
 }: FindTooltipPositionArgs): TooltipPosition {
   const appContainerPositionInfo = getAppContainerPositionInfo();
 
   if (!appContainerPositionInfo) {
     return defaultPosition;
   }
 
   const pointingTo = sourcePositionInfo;
   const {
     top: containerTop,
     left: containerLeft,
     right: containerRight,
     bottom: containerBottom,
   } = appContainerPositionInfo;
 
   const tooltipWidth = tooltipSize.width;
   const tooltipHeight = tooltipSize.height;
 
   const canBeDisplayedOnLeft = containerLeft + tooltipWidth <= pointingTo.left;
   const canBeDisplayedOnRight =
     tooltipWidth + pointingTo.right <= containerRight;
 
   const willCoverSidebarOnTopSideways =
     preventDisplayingBelowSource &&
     pointingTo.top + tooltipHeight > pointingTo.bottom;
 
   const canBeDisplayedOnTopSideways =
     pointingTo.top >= containerTop &&
     pointingTo.top + tooltipHeight <= containerBottom &&
     !willCoverSidebarOnTopSideways;
 
   const canBeDisplayedOnBottomSideways =
     pointingTo.bottom <= containerBottom &&
     pointingTo.bottom - tooltipHeight >= containerTop;
 
   const verticalCenterOfPointingTo = pointingTo.top + pointingTo.height / 2;
   const horizontalCenterOfPointingTo = pointingTo.left + pointingTo.width / 2;
 
   const willCoverSidebarInTheMiddleSideways =
     preventDisplayingBelowSource &&
     verticalCenterOfPointingTo + tooltipHeight / 2 > pointingTo.bottom;
 
   const canBeDisplayedInTheMiddleSideways =
     verticalCenterOfPointingTo - tooltipHeight / 2 >= containerTop &&
     verticalCenterOfPointingTo + tooltipHeight / 2 <= containerBottom &&
     !willCoverSidebarInTheMiddleSideways;
 
   const canBeDisplayedOnTop =
     pointingTo.top - tooltipHeight >= containerTop &&
     horizontalCenterOfPointingTo - tooltipWidth / 2 >= containerLeft &&
     horizontalCenterOfPointingTo + tooltipWidth / 2 <= containerRight;
 
   const canBeDisplayedOnBottom =
     pointingTo.bottom + tooltipHeight <= containerBottom &&
     horizontalCenterOfPointingTo - tooltipWidth / 2 >= containerLeft &&
     horizontalCenterOfPointingTo + tooltipWidth / 2 <= containerRight &&
     !preventDisplayingBelowSource;
 
   for (const tooltipPosition of availablePositions) {
     if (
       tooltipPosition === tooltipPositions.RIGHT &&
       canBeDisplayedOnRight &&
       canBeDisplayedInTheMiddleSideways
     ) {
       return tooltipPosition;
     } else if (
       tooltipPosition === tooltipPositions.RIGHT_BOTTOM &&
       canBeDisplayedOnRight &&
       canBeDisplayedOnBottomSideways
     ) {
       return tooltipPosition;
     } else if (
       tooltipPosition === tooltipPositions.LEFT &&
       canBeDisplayedOnLeft &&
       canBeDisplayedInTheMiddleSideways
     ) {
       return tooltipPosition;
     } else if (
       tooltipPosition === tooltipPositions.LEFT_BOTTOM &&
       canBeDisplayedOnLeft &&
       canBeDisplayedOnBottomSideways
     ) {
       return tooltipPosition;
     } else if (
       tooltipPosition === tooltipPositions.LEFT_TOP &&
       canBeDisplayedOnLeft &&
       canBeDisplayedOnTopSideways
     ) {
       return tooltipPosition;
     } else if (
       tooltipPosition === tooltipPositions.RIGHT_TOP &&
       canBeDisplayedOnRight &&
       canBeDisplayedOnTopSideways
     ) {
       return tooltipPosition;
     } else if (
       tooltipPosition === tooltipPositions.TOP &&
       canBeDisplayedOnTop
     ) {
       return tooltipPosition;
     } else if (
       tooltipPosition === tooltipPositions.BOTTOM &&
       canBeDisplayedOnBottom
     ) {
       return tooltipPosition;
     }
   }
   return defaultPosition;
 }
 
 type GetTooltipStyleParams = {
   +sourcePositionInfo: PositionInfo,
   +tooltipSize: TooltipSize,
   +tooltipPosition: TooltipPosition,
 };
 
 // ESLint doesn't recognize that invariant always throws
 // eslint-disable-next-line consistent-return
 function getTooltipStyle({
   sourcePositionInfo,
   tooltipSize,
   tooltipPosition,
 }: GetTooltipStyleParams): TooltipPositionStyle {
   if (tooltipPosition === tooltipPositions.RIGHT_TOP) {
     return {
       anchorPoint: {
         x: sourcePositionInfo.right,
         y: sourcePositionInfo.top,
       },
       horizontalPosition: 'right',
       verticalPosition: 'bottom',
       alignment: 'left',
     };
   } else if (tooltipPosition === tooltipPositions.LEFT_TOP) {
     return {
       anchorPoint: {
         x: sourcePositionInfo.left,
         y: sourcePositionInfo.top,
       },
       horizontalPosition: 'left',
       verticalPosition: 'bottom',
       alignment: 'right',
     };
   } else if (tooltipPosition === tooltipPositions.RIGHT_BOTTOM) {
     return {
       anchorPoint: {
         x: sourcePositionInfo.right,
         y: sourcePositionInfo.bottom,
       },
       horizontalPosition: 'right',
       verticalPosition: 'top',
       alignment: 'left',
     };
   } else if (tooltipPosition === tooltipPositions.LEFT_BOTTOM) {
     return {
       anchorPoint: {
         x: sourcePositionInfo.left,
         y: sourcePositionInfo.bottom,
       },
       horizontalPosition: 'left',
       verticalPosition: 'top',
       alignment: 'right',
     };
   } else if (tooltipPosition === tooltipPositions.LEFT) {
     return {
       anchorPoint: {
         x: sourcePositionInfo.left,
         y:
           sourcePositionInfo.top +
           sourcePositionInfo.height / 2 -
           tooltipSize.height / 2,
       },
       horizontalPosition: 'left',
       verticalPosition: 'bottom',
       alignment: 'right',
     };
   } else if (tooltipPosition === tooltipPositions.RIGHT) {
     return {
       anchorPoint: {
         x: sourcePositionInfo.right,
         y:
           sourcePositionInfo.top +
           sourcePositionInfo.height / 2 -
           tooltipSize.height / 2,
       },
       horizontalPosition: 'right',
       verticalPosition: 'bottom',
       alignment: 'left',
     };
   } else if (tooltipPosition === tooltipPositions.TOP) {
     return {
       anchorPoint: {
         x:
           sourcePositionInfo.left +
           sourcePositionInfo.width / 2 -
           tooltipSize.width / 2,
         y: sourcePositionInfo.top,
       },
       horizontalPosition: 'right',
       verticalPosition: 'top',
       alignment: 'center',
     };
   } else if (tooltipPosition === tooltipPositions.BOTTOM) {
     return {
       anchorPoint: {
         x:
           sourcePositionInfo.left +
           sourcePositionInfo.width / 2 -
           tooltipSize.width / 2,
         y: sourcePositionInfo.bottom,
       },
       horizontalPosition: 'right',
       verticalPosition: 'bottom',
       alignment: 'center',
     };
   }
   invariant(false, `Unexpected tooltip position value: ${tooltipPosition}`);
 }
 
+type GetTooltipPositionStyleParams = {
+  +tooltipSourcePosition: ?PositionInfo,
+  +tooltipSize: TooltipSize,
+  +availablePositions: $ReadOnlyArray<TooltipPosition>,
+  +preventDisplayingBelowSource?: boolean,
+};
+
+function getTooltipPositionStyle(
+  params: GetTooltipPositionStyleParams,
+): ?TooltipPositionStyle {
+  const {
+    tooltipSourcePosition,
+    tooltipSize,
+    availablePositions,
+    preventDisplayingBelowSource,
+  } = params;
+  if (!tooltipSourcePosition) {
+    return undefined;
+  }
+  const tooltipPosition = findTooltipPosition({
+    sourcePositionInfo: tooltipSourcePosition,
+    tooltipSize,
+    availablePositions,
+    defaultPosition: availablePositions[0],
+    preventDisplayingBelowSource,
+  });
+  if (!tooltipPosition) {
+    return undefined;
+  }
+
+  const tooltipPositionStyle = getTooltipStyle({
+    tooltipPosition,
+    sourcePositionInfo: tooltipSourcePosition,
+    tooltipSize,
+  });
+
+  return tooltipPositionStyle;
+}
+
 type CalculateTooltipSizeArgs = {
   +tooltipLabels: $ReadOnlyArray<string>,
   +timestamp: string,
 };
 
 function calculateTooltipSize({
   tooltipLabels,
   timestamp,
 }: CalculateTooltipSizeArgs): {
   +width: number,
   +height: number,
 } {
   const textWidth =
     calculateMaxTextWidth([...tooltipLabels, timestamp], font) +
     2 * tooltipLabelStyle.padding;
   const buttonsWidth =
     tooltipLabels.length *
     (tooltipButtonStyle.width +
       tooltipButtonStyle.paddingLeft +
       tooltipButtonStyle.paddingRight);
   const width =
     Math.max(textWidth, buttonsWidth) +
     tooltipStyle.paddingLeft +
     tooltipStyle.paddingRight;
   const height =
     (tooltipLabelStyle.height + 2 * tooltipLabelStyle.padding) * 2 +
     tooltipStyle.rowGap * 2 +
     tooltipButtonStyle.height;
   return {
     width,
     height,
   };
 }
 
-export { findTooltipPosition, calculateTooltipSize, getTooltipStyle };
+export { findTooltipPosition, getTooltipPositionStyle, calculateTooltipSize };