oaspec_fetch

JavaScript fetch transport adapter for oaspec generated clients, backed by gleam_fetch.

oaspec_fetch bridges the runtime-agnostic oaspec/transport.AsyncSend contract that oaspec generate --mode=client emits to the browser fetch API on the JavaScript target. The root oaspec package does not depend on any specific HTTP library; the transport is composed at the call site by plugging this adapter (or your own) into the generated client.

For the BEAM target, see the sibling oaspec_httpc adapter.

Install

gleam add oaspec_fetch

Quick start

import api/client
import oaspec/fetch
import oaspec/transport

pub fn main() {
  let send =
    fetch.send
    |> transport.with_base_url(client.default_base_url())

  client.list_pets_async(send, limit: Some(10), offset: None)
  |> transport.run(fn(result) {
    let _ = result
    Nil
  })
}

The async client variants suffixed _async return a transport.Async value that resolves once the underlying fetch promise settles. The adapter exposes helpers to bridge transport.Async to native JavaScript promises when the host needs to await the result outside Gleam.

Tests in the consumer

For unit tests of code that calls a generated async client, prefer oaspec/mock over a real network. The adapter’s AsyncSend shape matches mock.AsyncSend, so test code substitutes one for the other without touching the call sites.

License

MIT. See the LICENSE file at the root of the oaspec repository.