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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 | 12x 12x 12x 12x 182x 20x 20x 54x 54x 22x 54x 28x 26x 20x 162x 248x 248x 289x 289x 203x 86x 248x 12x 174x 26x 148x 148x 148x 148x 147x 147x 147x 12x 248x 9x 9x 9x | import {
App,
createApp,
createVNode,
ssrContextKey,
ssrUtils,
VNode
} from 'vue'
import { isPromise, isString } from '@vue/shared'
import { SSRContext, renderComponentVNode, SSRBuffer } from './render'
const { isVNode } = ssrUtils
async function unrollBuffer(buffer: SSRBuffer): Promise<string> {
if (buffer.hasAsync) {
let ret = ''
for (let i = 0; i < buffer.length; i++) {
let item = buffer[i]
if (isPromise(item)) {
item = await item
}
if (isString(item)) {
ret += item
} else {
ret += await unrollBuffer(item)
}
}
return ret
} else {
// sync buffer can be more efficiently unrolled without unnecessary await
// ticks
return unrollBufferSync(buffer)
}
}
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)
return result
}
export async function resolveTeleports(context: SSRContext) {
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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