<p>This shows one technique for handling POST data using the <code>Router</code> object <a href="https://developer.fermyon.com/spin/v2/javascript-components">built into the JS/TS SDK</a> for Spin.</p>
<p>This example illustrates how to pass the HTTP body from Spin’s SDK all the way to your end function without needing to use middleware.</p>
<pre><code class="language-typescript">export const handleRequest: HandleRequest = async function (request: HttpRequest): Promise<HttpResponse> {
  let router = Router()

  // This gets the base path from the request, which is considered better
  // than hardcoding it. Now, when the `route` is changed in spin.toml,
  // our code does not need to change.
  let basePath = request.headers["spin-component-route"]

  // Note that we pass `request.body` as the second param.
  // That contains an ArrayBuffer with the encoded body.
  router.post(basePath, (req, body) => {

    // Decode the ArrayBuffer into a string
    let decodedBody = decoder.decode(body)
    return {
      status: 200,
      headers: { "content-type": "text/plain" },
      body: decodedBody
    }
  })
  // IMPORTANT: We pass the request body as the second param.
  return await router.handleRequest(request, request.body)
}
</code></pre>
<p>Check out the GitHub repository for a full runnable example.</p>