@tldraw/editor/dist-esm/lib/hooks/useViewportHeight.mjs.map

tldraw infinite canvas SDK (editor).

{
  "version": 3,
  "sources": ["../../../src/lib/hooks/useViewportHeight.ts"],
  "sourcesContent": ["import { useLayoutEffect, useState } from 'react'\n\n/*!\n * BSD License: https://github.com/outline/rich-markdown-editor/blob/main/LICENSE\n * Copyright (c) 2020 General Outline, Inc (https://www.getoutline.com/) and individual contributors.\n *\n * Returns the height of the viewport.\n * This is mainly to account for virtual keyboards on mobile devices.\n *\n * N.B. On iOS, you have to take into account the offsetTop as well so that you get an accurate position\n * while using the virtual keyboard.\n */\n/** @public */\nexport function useViewportHeight(): number {\n\tconst visualViewport = window.visualViewport\n\tconst [height, setHeight] = useState<number>(() =>\n\t\tvisualViewport ? visualViewport.height + visualViewport.offsetTop : window.innerHeight\n\t)\n\n\tuseLayoutEffect(() => {\n\t\tconst handleResize = () => {\n\t\t\tconst visualViewport = window.visualViewport\n\t\t\tsetHeight(() =>\n\t\t\t\tvisualViewport ? visualViewport.height + visualViewport.offsetTop : window.innerHeight\n\t\t\t)\n\t\t}\n\n\t\twindow.visualViewport?.addEventListener('resize', handleResize)\n\t\twindow.visualViewport?.addEventListener('scroll', handleResize)\n\n\t\treturn () => {\n\t\t\twindow.visualViewport?.removeEventListener('resize', handleResize)\n\t\t\twindow.visualViewport?.removeEventListener('scroll', handleResize)\n\t\t}\n\t}, [])\n\treturn height\n}\n"],
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  "names": ["visualViewport"]
}