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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 | 2x 2x 2x 48x 48x 48x 48x 48x 48x 48x 48x 48x 48x 48x 48x 48x 48x 48x 48x 48x 48x 48x 48x 2x 51x 51x 51x 51x 51x 51x 51x 51x 51x 51x 51x 42x 42x 56x 56x 42x 42x 42x 42x 42x 42x 42x 5x 5x 4x 4x 4x 4x 4x 4x 4x 42x 37x 37x 3x 37x 34x 45x 25x 25x 25x 45x 34x 37x 9x 3x 3x 37x 28x 28x 28x 28x 3x 1x 28x 1x 1x 1x 28x 39x 39x 28x 37x 51x 3x 3x 51x 2x 2x 45x 45x 26x 4x 4x | import { type ComponentInternalInstance, type Slots, ssrUtils } from 'vue' import { type Props, type PushFn, type SSRBufferItem, renderVNodeChildren, } from '../render' import { isArray } from '@vue/shared' const { ensureValidVNode } = ssrUtils export type SSRSlots = Record<string, SSRSlot> export type SSRSlot = ( props: Props, push: PushFn, parentComponent: ComponentInternalInstance | null, scopeId: string | null, ) => void export function ssrRenderSlot( slots: Slots | SSRSlots, slotName: string, slotProps: Props, fallbackRenderFn: (() => void) | null, push: PushFn, parentComponent: ComponentInternalInstance, slotScopeId?: string, ): void { // template-compiled slots are always rendered as fragments push(`<!--[-->`) ssrRenderSlotInner( slots, slotName, slotProps, fallbackRenderFn, push, parentComponent, slotScopeId, ) push(`<!--]-->`) } export function ssrRenderSlotInner( slots: Slots | SSRSlots, slotName: string, slotProps: Props, fallbackRenderFn: (() => void) | null, push: PushFn, parentComponent: ComponentInternalInstance, slotScopeId?: string, transition?: boolean, ): void { const slotFn = slots[slotName] if (slotFn) { const slotBuffer: SSRBufferItem[] = [] const bufferedPush = (item: SSRBufferItem) => { slotBuffer.push(item) } const ret = slotFn( slotProps, bufferedPush, parentComponent, slotScopeId ? ' ' + slotScopeId : '', ) if (isArray(ret)) { const validSlotContent = ensureValidVNode(ret) if (validSlotContent) { // normal slot renderVNodeChildren( push, validSlotContent, parentComponent, slotScopeId, ) } else if (fallbackRenderFn) { fallbackRenderFn() } } else { // ssr slot. // check if the slot renders all comments, in which case use the fallback let isEmptySlot = true if (transition) { isEmptySlot = false } else { for (let i = 0; i < slotBuffer.length; i++) { if (!isComment(slotBuffer[i])) { isEmptySlot = false break } } } if (isEmptySlot) { if (fallbackRenderFn) { fallbackRenderFn() } } else { // #9933 // Although we handle Transition/TransitionGroup in the transform stage // without rendering it as a fragment, the content passed into the slot // may still be a fragment. // Therefore, here we need to avoid rendering it as a fragment again. let start = 0 let end = slotBuffer.length if ( transition && slotBuffer[0] === '<!--[-->' && slotBuffer[end - 1] === '<!--]-->' ) { start++ end-- } for (let i = start; i < end; i++) { push(slotBuffer[i]) } } } } else if (fallbackRenderFn) { fallbackRenderFn() } } const commentTestRE = /^<!--[\s\S]*-->$/ const commentRE = /<!--[^]*?-->/gm function isComment(item: SSRBufferItem) { if (typeof item !== 'string' || !commentTestRE.test(item)) return false // if item is '<!---->' or '<!--[-->' or '<!--]-->', return true directly if (item.length <= 8) return true return !item.replace(commentRE, '').trim() } |