DF8109: Renderer Module File Missing

Message

The renderer module registered for dock type "{type}" does not exist at "{file}"

Cause

An initHub({ renderers }) registration points at a file that isn't on disk. Renderer modules are prebuilt, self-contained browser ES modules the hub serves verbatim at <base>__renderers/<type>.mjs — a missing bundle would make every client's lazy import 404 at mount time, so the hub fails fast at startup instead.

Example

initHub({
  renderers: [
    { type: 'json-render', file: '/path/that/was/never/built.mjs' }, // ✗
  ],
})

Fix

• Build the renderer package first — the bundle is a build artifact (e.g. @devframes/json-render-ui's dist/renderer/json-render.mjs).
• Prefer the package's registration helper over a hand-written path — jsonRenderUiRenderer() from @devframes/json-render-ui/hub resolves the shipped bundle for you.

Source

• packages/hub/src/node/initiate.ts — resolveRendererRegistrations() throws when the resolved file fails the existence probe.