bc518174
 王天杨
提交两个项目文件
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import { invariant } from '@react-dnd/invariant'
import type { Identifier } from 'dnd-core'
import { useMemo } from 'react'
import type { DropTargetHookSpec } from '../types.js'
/**
* Internal utility hook to get an array-version of spec.accept.
* The main utility here is that we aren't creating a new array on every render if a non-array spec.accept is passed in.
* @param spec
*/
export function useAccept<O, R, P>(
spec: DropTargetHookSpec<O, R, P>,
): Identifier[] {
const { accept } = spec
return useMemo(() => {
invariant(spec.accept != null, 'accept must be defined')
return Array.isArray(accept) ? accept : [accept]
}, [accept])
}
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