Making DELETE Requests | Effect Http Client

A DELETE request tells the server to remove a resource. You specify what to delete by URL. No request body is needed.

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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 deleteProduct(productId: number) {
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  return Effect.gen(function* () {
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    const client = yield* HttpClient.HttpClient;
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    const request = HttpClientRequest.del(
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      `https://dummyjson.com/products/${productId}`,
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    );
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    const response = yield* client.execute(request);
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    const data = yield* response.json;
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    return data;
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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(deleteProduct(1)).then((data) => {
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  console.log("Deleted:", data.title);
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  console.log("isDeleted:", data.isDeleted);
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  console.log("deletedOn:", data.deletedOn);
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});

Output:

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Deleted: Essence Mascara Lash Princess
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isDeleted: true
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deletedOn: 2026-02-18T14:27:54.479Z

The method is called HttpClientRequest.del() — not delete — because delete is a reserved keyword in JavaScript. The same applies to the client’s shorthand: client.del(url) instead of client.delete(url).

Note that the dummyJSON API simulates deletion by returning the product data with isDeleted: true and a deletedOn timestamp.

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