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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 | 15x 422x 267x 155x 155x 279x 279x 112x 112x 167x 75x 75x 75x 92x 92x 18x 18x 18x 74x 186x 237x 417x 417x 478x 478x 328x 150x 417x 265x 39x 226x 226x 226x 226x 223x 223x 223x 3x 3x 223x 330x 14x 14x 14x | import {
type App,
type VNode,
createApp,
createVNode,
ssrContextKey,
ssrUtils,
} from 'vue'
import { isPromise, isString } from '@vue/shared'
import { type SSRBuffer, type SSRContext, renderComponentVNode } from './render'
const { isVNode } = ssrUtils
function nestedUnrollBuffer(
buffer: SSRBuffer,
parentRet: string,
startIndex: number,
): Promise<string> | string {
if (!buffer.hasAsync) {
return parentRet + unrollBufferSync(buffer)
}
let ret = parentRet
for (let i = startIndex; i < buffer.length; i += 1) {
const item = buffer[i]
if (isString(item)) {
ret += item
continue
}
if (isPromise(item)) {
return item.then(nestedItem => {
buffer[i] = nestedItem
return nestedUnrollBuffer(buffer, ret, i)
})
}
const result = nestedUnrollBuffer(item, ret, 0)
if (isPromise(result)) {
return result.then(nestedItem => {
buffer[i] = nestedItem
return nestedUnrollBuffer(buffer, '', i)
})
}
ret = result
}
return ret
}
export function unrollBuffer(buffer: SSRBuffer): Promise<string> | string {
return nestedUnrollBuffer(buffer, '', 0)
}
function unrollBufferSync(buffer: SSRBuffer): string {
let ret = ''
for (let i = 0; i < buffer.length; i++) {
let item = buffer[i]
if (isString(item)) {
ret += item
} else {
// since this is a sync buffer, child buffers are never promises
ret += unrollBufferSync(item as SSRBuffer)
}
}
return ret
}
export async function renderToString(
input: App | VNode,
context: SSRContext = {},
): Promise<string> {
if (isVNode(input)) {
// raw vnode, wrap with app (for context)
return renderToString(createApp({ render: () => input }), context)
}
// rendering an app
const vnode = createVNode(input._component, input._props)
vnode.appContext = input._context
// provide the ssr context to the tree
input.provide(ssrContextKey, context)
const buffer = await renderComponentVNode(vnode)
const result = await unrollBuffer(buffer as SSRBuffer)
await resolveTeleports(context)
if (context.__watcherHandles) {
for (const unwatch of context.__watcherHandles) {
unwatch()
}
}
return result
}
export async function resolveTeleports(context: SSRContext): Promise<void> {
if (context.__teleportBuffers) {
context.teleports = context.teleports || {}
for (const key in context.__teleportBuffers) {
// note: it's OK to await sequentially here because the Promises were
// created eagerly in parallel.
context.teleports[key] = await unrollBuffer(
await Promise.all([context.__teleportBuffers[key]]),
)
}
}
}
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