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6.1 KiB
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{"ast":null,"code":"import { useContext, useId, useEffect, useCallback } from 'react';\nimport { PresenceContext } from '../../context/PresenceContext.mjs';\n\n/**\n * When a component is the child of `AnimatePresence`, it can use `usePresence`\n * to access information about whether it's still present in the React tree.\n *\n * ```jsx\n * import { usePresence } from \"framer-motion\"\n *\n * export const Component = () => {\n * const [isPresent, safeToRemove] = usePresence()\n *\n * useEffect(() => {\n * !isPresent && setTimeout(safeToRemove, 1000)\n * }, [isPresent])\n *\n * return <div />\n * }\n * ```\n *\n * If `isPresent` is `false`, it means that a component has been removed the tree, but\n * `AnimatePresence` won't really remove it until `safeToRemove` has been called.\n *\n * @public\n */\nfunction usePresence() {\n let subscribe = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : true;\n const context = useContext(PresenceContext);\n if (context === null) return [true, null];\n const {\n isPresent,\n onExitComplete,\n register\n } = context;\n // It's safe to call the following hooks conditionally (after an early return) because the context will always\n // either be null or non-null for the lifespan of the component.\n const id = useId();\n useEffect(() => {\n if (subscribe) {\n return register(id);\n }\n }, [subscribe]);\n const safeToRemove = useCallback(() => subscribe && onExitComplete && onExitComplete(id), [id, onExitComplete, subscribe]);\n return !isPresent && onExitComplete ? [false, safeToRemove] : [true];\n}\n/**\n * Similar to `usePresence`, except `useIsPresent` simply returns whether or not the component is present.\n * There is no `safeToRemove` function.\n *\n * ```jsx\n * import { useIsPresent } from \"framer-motion\"\n *\n * export const Component = () => {\n * const isPresent = useIsPresent()\n *\n * useEffect(() => {\n * !isPresent && console.log(\"I've been removed!\")\n * }, [isPresent])\n *\n * return <div />\n * }\n * ```\n *\n * @public\n */\nfunction useIsPresent() {\n return isPresent(useContext(PresenceContext));\n}\nfunction isPresent(context) {\n return context === null ? true : context.isPresent;\n}\nexport { isPresent, useIsPresent, usePresence };","map":{"version":3,"names":["useContext","useId","useEffect","useCallback","PresenceContext","usePresence","subscribe","arguments","length","undefined","context","isPresent","onExitComplete","register","id","safeToRemove","useIsPresent"],"sources":["/Users/apple/Documents/cursor/Web课件/AI课/education_web_多Agent协作系统/node_modules/framer-motion/dist/es/components/AnimatePresence/use-presence.mjs"],"sourcesContent":["import { useContext, useId, useEffect, useCallback } from 'react';\nimport { PresenceContext } from '../../context/PresenceContext.mjs';\n\n/**\n * When a component is the child of `AnimatePresence`, it can use `usePresence`\n * to access information about whether it's still present in the React tree.\n *\n * ```jsx\n * import { usePresence } from \"framer-motion\"\n *\n * export const Component = () => {\n * const [isPresent, safeToRemove] = usePresence()\n *\n * useEffect(() => {\n * !isPresent && setTimeout(safeToRemove, 1000)\n * }, [isPresent])\n *\n * return <div />\n * }\n * ```\n *\n * If `isPresent` is `false`, it means that a component has been removed the tree, but\n * `AnimatePresence` won't really remove it until `safeToRemove` has been called.\n *\n * @public\n */\nfunction usePresence(subscribe = true) {\n const context = useContext(PresenceContext);\n if (context === null)\n return [true, null];\n const { isPresent, onExitComplete, register } = context;\n // It's safe to call the following hooks conditionally (after an early return) because the context will always\n // either be null or non-null for the lifespan of the component.\n const id = useId();\n useEffect(() => {\n if (subscribe) {\n return register(id);\n }\n }, [subscribe]);\n const safeToRe
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