Logging Responses

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import {
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  FetchHttpClient,
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  HttpClient,
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  HttpClientRequest,
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} from "effect/unstable/http";
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import { Effect } from "effect";
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function fetchUserWithResponseLogging(userId: number) {
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  return Effect.gen(function* () {
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    const client = (yield* HttpClient.HttpClient).pipe(
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      HttpClient.tap((response) =>
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        Effect.sync(() => {
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          console.log(`[Response] Status: ${response.status}`);
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          console.log(`[Response] Headers:`, response.headers);
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        }),
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      ),
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    );
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    const request = HttpClientRequest.get(
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      `https://dummyjson.com/users/${userId}`,
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    );
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    const response = yield* client.execute(request);
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    const user = yield* response.json;
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    return user;
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  }).pipe(Effect.provide(FetchHttpClient.layer));
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}
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// Test it
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Effect.runPromise(fetchUserWithResponseLogging(1)).then((user) => {
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  console.log("User:", user.firstName, user.lastName);
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});

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[Response] Status: 200
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[Response] Headers: {
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  'access-control-allow-origin': '*',
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  'cf-cache-status': 'DYNAMIC',
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  'cf-ray': '9d0617b0acc6d43a-SIN',
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  connection: 'keep-alive',
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  'content-encoding': 'br',
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  'content-type': 'application/json; charset=utf-8',
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  date: 'Thu, 19 Feb 2026 13:25:51 GMT',
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  etag: 'W/"58f-CoL/KoXlW3x1PtqQr3wqPsXj6DE"',
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  nel: '{"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}',
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  'report-to': '{"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=2mQIukE1lkEHVqD0dmK%2F4UFc%2B%2FaDuB%2FAkxldT47AFxVSW4kn57D%2BxUr9%2FCi6ZGCIbRvtIfafgQfMZfi3wBrZklxBNYX0R39HUBw4FZsyLaYJQJ8DyJXDt%2FI%3D"}]}',
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  server: 'cloudflare',
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  'strict-transport-security': 'max-age=15552000; includeSubDomains',
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  'transfer-encoding': 'chunked',
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  vary: 'Accept-Encoding',
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  'x-content-type-options': 'nosniff',
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  'x-dns-prefetch-control': 'off',
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  'x-download-options': 'noopen',
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  'x-frame-options': 'SAMEORIGIN',
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  'x-ratelimit-limit': '100',
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  'x-ratelimit-remaining': '73',
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  'x-ratelimit-reset': '1771507553',
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  'x-xss-protection': '1; mode=block'
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}
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User: Emily Johnson