For full exposed APIs, see src/index.ts. You can also run yarn build runtime-core --types from repo root, which will generate an API report at temp/runtime-core.api.md.

Building a Custom Renderer

import { createRenderer, createAppAPI } from '@vue/runtime-core'

const { render, createApp } = createRenderer({
  pathcProp,
  insert,
  remove,
  createElement,
  // ...
})

// `render` is the low-level API
// `createApp` returns an app instance with configurable context shared
// by the entire app tree.
export { render, createApp }

export * from '@vue/runtime-core'

See @vue/runtime-dom for how a DOM-targeting renderer is implemented.