Web Workers

Docs can run document layout in a Web Worker¹ through UniverDocsLayoutWorkerPlugin. Register it after the Docs core plugin. workerFactory creates a fresh Worker for the layout service.

Start with installation and basic usage. The following snippets extend that setup. Register the plugins before creating or loading content; replace existing registrations rather than registering a plugin twice.

Main thread

import { UniverDocsLayoutWorkerPlugin } from '@univerjs/docs'univer.registerPlugin(UniverDocsLayoutWorkerPlugin, {  workerFactory: () => new Worker(new URL('./worker.ts', import.meta.url), { type: 'module' }),})

Worker entry

import { startDocsLayoutWorker } from '@univerjs/docs'startDocsLayoutWorker()

Use a module Worker and a separate entry file. Keep the Worker and main-thread package versions aligned. Rendering and user interaction stay on the main thread.