Note: as of 3.2.13+, this package is included as a dependency of the main vue package and can be accessed as vue/server-renderer. This means you no longer need to explicitly install this package and ensure its version match that of vue's. Just use the vue/server-renderer deep import instead.
renderToStringSignature
function renderToString(
  input: App | VNode,
  context?: SSRContext
): Promise<string>
Usage
const { createSSRApp } = require('vue')
const { renderToString } = require('@vue/server-renderer')
const app = createSSRApp({
  data: () => ({ msg: 'hello' }),
  template: `<div>{{ msg }}</div>`
})
;(async () => {
  const html = await renderToString(app)
  console.log(html)
})()
If the rendered app contains teleports, the teleported content will not be part of the rendered string. Instead, they are exposed under the teleports property of the ssr context object:
const ctx = {}
const html = await renderToString(app, ctx)
console.log(ctx.teleports) // { '#teleported': 'teleported content' }
renderToNodeStreamRenders input as a Node.js Readable stream.
Signature
function renderToNodeStream(input: App | VNode, context?: SSRContext): Readable
Usage
// inside a Node.js http handler
renderToNodeStream(app).pipe(res)
Note: This method is not supported in the ESM build of @vue/server-renderer, which is decoupled from Node.js environments. Use pipeToNodeWritable instead.
pipeToNodeWritableRender and pipe to an existing Node.js Writable stream instance.
Signature
function pipeToNodeWritable(
  input: App | VNode,
  context: SSRContext = {},
  writable: Writable
): void
Usage
// inside a Node.js http handler
pipeToNodeWritable(app, {}, res)
renderToWebStreamRenders input as a Web ReadableStream.
Signature
function renderToWebStream(
  input: App | VNode,
  context?: SSRContext
): ReadableStream
Usage
// inside an environment with ReadableStream support
return new Response(renderToWebStream(app))
Note: in environments that do not expose ReadableStream constructor in the global scope, pipeToWebWritable should be used instead.
pipeToWebWritableRender and pipe to an existing Web WritableStream instance.
Signature
function pipeToWebWritable(
  input: App | VNode,
  context: SSRContext = {},
  writable: WritableStream
): void
Usage
This is typically used in combination with TransformStream:
// TransformStream is available in environments such as CloudFlare workers.
// in Node.js, TransformStream needs to be explicitly imported from 'stream/web'
const { readable, writable } = new TransformStream()
pipeToWebWritable(app, {}, writable)
return new Response(readable)
renderToSimpleStreamRenders input in streaming mode using a simple readable interface.
Signature
function renderToSimpleStream(
  input: App | VNode,
  context: SSRContext,
  options: SimpleReadable
): SimpleReadable
interface SimpleReadable {
  push(content: string | null): void
  destroy(err: any): void
}
Usage
let res = ''
renderToSimpleStream(
  app,
  {},
  {
    push(chunk) {
      if (chunk === null) {
        // done
        console(`render complete: ${res}`)
      } else {
        res += chunk
      }
    },
    destroy(err) {
      // error encountered
    }
  }
)