{
  "version": 3,
  "sources": ["../src/useSize.tsx"],
  "sourcesContent": ["/// <reference types=\"resize-observer-browser\" />\n\nimport * as React from 'react';\nimport { useLayoutEffect } from '@radix-ui/react-use-layout-effect';\n\nfunction useSize(element: HTMLElement | null) {\n  const [size, setSize] = React.useState<{ width: number; height: number } | undefined>(undefined);\n\n  useLayoutEffect(() => {\n    if (element) {\n      // provide size as early as possible\n      setSize({ width: element.offsetWidth, height: element.offsetHeight });\n\n      const resizeObserver = new ResizeObserver((entries) => {\n        if (!Array.isArray(entries)) {\n          return;\n        }\n\n        // Since we only observe the one element, we don't need to loop over the\n        // array\n        if (!entries.length) {\n          return;\n        }\n\n        const entry = entries[0];\n        let width: number;\n        let height: number;\n\n        if ('borderBoxSize' in entry) {\n          const borderSizeEntry = entry['borderBoxSize'];\n          // iron out differences between browsers\n          const borderSize = Array.isArray(borderSizeEntry) ? borderSizeEntry[0] : borderSizeEntry;\n          width = borderSize['inlineSize'];\n          height = borderSize['blockSize'];\n        } else {\n          // for browsers that don't support `borderBoxSize`\n          // we calculate it ourselves to get the correct border box.\n          width = element.offsetWidth;\n          height = element.offsetHeight;\n        }\n\n        setSize({ width, height });\n      });\n\n      resizeObserver.observe(element, { box: 'border-box' });\n\n      return () => resizeObserver.unobserve(element);\n    } else {\n      // We only want to reset to `undefined` when the element becomes `null`,\n      // not if it changes to another element.\n      setSize(undefined);\n    }\n  }, [element]);\n\n  return size;\n}\n\nexport { useSize };\n"],
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