DefjsOptional packages that plug into an application-owned Defjs client.
Plugins
Plugins are optional packages the consuming application installs on its own Defjs client. @defjs/core does not import them, and SDK definitions do not either. The application owns the client, the endpoint, the credentials, and which plugins to install.
Plugins come in two kinds. Framework plugins hand an existing Client to the framework tree. A middleware plugin is the plugin form of an interceptor chain: it appends interceptors to the application's client. See Interceptors.
| Plugin | Package | What it adds | What it does not do |
|---|---|---|---|
| React · Framework | @defjs/react | ClientProvider and useClient() for an existing client | Create, cache, retry, or dispose the client. No query or state library |
| Vue · Framework | @defjs/vue | A Vue plugin, HTTP_CLIENT, and injectClient() | Create, cache, or retry. It does not close transports on unmount. No query library |
| OpenTelemetry server · Middleware | @defjs/opentelemetry-server | withOpenTelemetryServer(...), a client option that appends HTTP, SSE, and WebSocket interceptors | Initialize an OpenTelemetry SDK, or instrument inbound server requests |
React and Vue hand an existing Client to the framework tree. The application creates that client with createClient from @defjs/core. The React plugin provides it through Context. The Vue plugin provides it through app.use(createClientPlugin(client)). Neither package starts a request.
The OpenTelemetry server middleware plugin is a ClientOption. Pass withOpenTelemetryServer(...) to createClient. It appends one interceptor for each enabled transport, in the order HTTP, SSE, WebSocket. See Interceptors. The package does not initialize the OpenTelemetry SDK.