express-yaschema-ws-api-handler
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4.0.1 • Public • Published

express-yaschema-ws-api-handler

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Express support for handling WebSocket APIs declared using yaschema-ws-api.

Basic Example

// API schema and metadata
// You'll typically define this in a separate package shared by your server and clients
export const stream = makeWsApi({
  routeType: 'stream',
  url: '/stream',
  requests: {
    ping: schema.object({ echo: schema.string().allowEmptyString().optional() }).optional(),
    hello: schema.any().optional()
  },
  responses: {
    pong: schema.object({
      body: schema.string()
    }),
    hello: schema.object({
      body: schema.string()
    })
  }
});
import expressWS, { WithWebsocketMethod } from 'express-ws';



// Add WebSocket support to Express
expressWs(app);
const appWithWs = app as typeof app & WithWebsocketMethod;
registerWsApiHandler(
  appWithWs,
  api.stream,
  {},
  {
    ping: async ({ input, output }) => output.pong({ body: `PONG${(input?.echo?.length ?? 0) > 0 ? ' ' : ''}${input?.echo ?? ''}` }),
    hello: async ({ output }) => output.hello({ body: 'world' })
  }
)

The options object passed to registerWsApiHandler lets you override the validation mode and/or specify middleware.

Thanks

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API Docs

Be sure to check out our other TypeScript OSS projects as well.

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Install

npm i express-yaschema-ws-api-handler

Weekly Downloads

4

Version

4.0.1

License

MIT

Unpacked Size

145 kB

Total Files

154

Last publish

Collaborators

  • bwestphal