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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 372x 247x 125x 125x 219x 219x 92x 92x 127x 55x 55x 55x 72x 72x 18x 18x 18x 54x 146x 227x 397x 397x 458x 458x 308x 150x 397x 255x 39x 216x 216x 216x 216x 213x 213x 213x 3x 3x 213x 320x 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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