Moving the underlying map out of the slippy component and handling window resize events.

src/components/map/map.tsx

@@ -0,0 +1,109 @@
+import react, { useMemo, useEffect } from 'react';
+import { useDispatch, useSelector } from 'react-redux';
+import _ from 'lodash';
+import { MapState, mapActions } from '../../store/map';
+
+const Map: react.FC<{}> = (props: {}) => {
+  const dispatch = useDispatch();
+
+  const mapState = useSelector((state: { map: MapState }) => state.map);
+
+  console.log(`mapState: ${JSON.stringify(mapState)}`);
+
+  const resizeHandler = () => {
+    dispatch(mapActions.resize());
+  };
+  const debouncedResizeHandler = useMemo(
+    () => _.debounce(resizeHandler, 500),
+    []
+  );
+
+  useEffect(() => {
+    window.addEventListener('resize', debouncedResizeHandler);
+  }, []);
+
+  return (
+    <div>
+      <div style={{ height: '256px' }}>
+        <img
+          alt=''
+          role='presentation'
+          src='https://tile.openstreetmap.org/14/11720/10052.png'
+          style={{ width: '256px', height: '256px', opacity: 1 }}
+        />
+        <img
+          alt=''
+          role='presentation'
+          src='https://tile.openstreetmap.org/14/11721/10052.png'
+          style={{ width: '256px', height: '256px', opacity: 1 }}
+        />
+        <img
+          alt=''
+          role='presentation'
+          src='https://tile.openstreetmap.org/14/11722/10052.png'
+          style={{ width: '256px', height: '256px', opacity: 1 }}
+        />
+        <img
+          alt=''
+          role='presentation'
+          src='https://tile.openstreetmap.org/14/11723/10052.png'
+          style={{ width: '256px', height: '256px', opacity: 1 }}
+        />
+      </div>
+      <div style={{ height: '256px' }}>
+        <img
+          alt=''
+          role='presentation'
+          src='https://tile.openstreetmap.org/14/11720/10053.png'
+          style={{ width: '256px', height: '256px', opacity: 1 }}
+        />
+        <img
+          alt=''
+          role='presentation'
+          src='https://tile.openstreetmap.org/14/11721/10053.png'
+          style={{ width: '256px', height: '256px', opacity: 1 }}
+        />
+        <img
+          alt=''
+          role='presentation'
+          src='https://tile.openstreetmap.org/14/11722/10053.png'
+          style={{ width: '256px', height: '256px', opacity: 1 }}
+        />
+        <img
+          alt=''
+          role='presentation'
+          src='https://tile.openstreetmap.org/14/11723/10053.png'
+          style={{ width: '256px', height: '256px', opacity: 1 }}
+        />
+      </div>
+      <div style={{ height: '256px' }}>
+        <img
+          alt=''
+          role='presentation'
+          src='https://tile.openstreetmap.org/14/11720/10054.png'
+          style={{ width: '256px', height: '256px', opacity: 1 }}
+        />
+        <img
+          alt=''
+          role='presentation'
+          src='https://tile.openstreetmap.org/14/11721/10054.png'
+          style={{ width: '256px', height: '256px', opacity: 1 }}
+        />
+        <img
+          alt=''
+          role='presentation'
+          src='https://tile.openstreetmap.org/14/11722/10054.png'
+          style={{ width: '256px', height: '256px', opacity: 1 }}
+        />
+        <img
+          alt=''
+          role='presentation'
+          src='https://tile.openstreetmap.org/14/11723/10054.png'
+          style={{ width: '256px', height: '256px', opacity: 1 }}
+        />
+      </div>
+    </div>
+  );
+};
+
+export default Map;