@react-navigation/elements/lib/module/Header/useHeaderHeight.js

UI Components for React Navigation

"use strict";

import * as React from 'react';
import { HeaderHeightContext } from "./HeaderHeightContext.js";
export function useHeaderHeight() {
  const height = React.useContext(HeaderHeightContext);
  if (height === undefined) {
    throw new Error("Couldn't find the header height. Are you inside a screen in a navigator with a header?");
  }
  return height;
}
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