206 breaking releases

new 0.209.0 Jan 9, 2025
0.208.0 Dec 19, 2024
0.207.0 Dec 17, 2024
0.204.0 Nov 28, 2024
0.12.0 Nov 23, 2020

#85 in HTTP client

Download history 1627/week @ 2024-09-22 1816/week @ 2024-09-29 1657/week @ 2024-10-06 1807/week @ 2024-10-13 1678/week @ 2024-10-20 1711/week @ 2024-10-27 1793/week @ 2024-11-03 1347/week @ 2024-11-10 1387/week @ 2024-11-17 1608/week @ 2024-11-24 1684/week @ 2024-12-01 2224/week @ 2024-12-08 1879/week @ 2024-12-15 955/week @ 2024-12-22 642/week @ 2024-12-29 872/week @ 2025-01-05

4,441 downloads per month
Used in 62 crates (22 directly)

MIT license

400KB
11K SLoC

Rust 8K SLoC // 0.0% comments JavaScript 3K SLoC // 0.2% comments TypeScript 311 SLoC // 0.5% comments

deno_fetch

This crate implements the Fetch API.

Spec: https://fetch.spec.whatwg.org/

Usage Example

From javascript, include the extension's source, and assign the following properties to the global scope:

import * as headers from "ext:deno_fetch/20_headers.js";
import * as formData from "ext:deno_fetch/21_formdata.js";
import * as request from "ext:deno_fetch/23_request.js";
import * as response from "ext:deno_fetch/23_response.js";
import * as fetch from "ext:deno_fetch/26_fetch.js";
import * as eventSource from "ext:deno_fetch/27_eventsource.js";

// Set up the callback for Wasm streaming ops
Deno.core.setWasmStreamingCallback(fetch.handleWasmStreaming);

Object.defineProperty(globalThis, "fetch", {
  value: fetch.fetch,
  enumerable: true,
  configurable: true,
  writable: true,
});

Object.defineProperty(globalThis, "Request", {
  value: request.Request,
  enumerable: false,
  configurable: true,
  writable: true,
});

Object.defineProperty(globalThis, "Response", {
  value: response.Response,
  enumerable: false,
  configurable: true,
  writable: true,
});

Object.defineProperty(globalThis, "Headers", {
  value: headers.Headers,
  enumerable: false,
  configurable: true,
  writable: true,
});

Object.defineProperty(globalThis, "FormData", {
  value: formData.FormData,
  enumerable: false,
  configurable: true,
  writable: true,
});

Then from rust, provide deno_fetch::deno_fetch::init_ops_and_esm<Permissions>(Default::default()) in the extensions field of your RuntimeOptions

Where:

  • Permissions: a struct implementing deno_fetch::FetchPermissions
  • Options: deno_fetch::Options, which implements Default

Dependencies

  • deno_webidl: Provided by the deno_webidl crate
  • deno_web: Provided by the deno_web crate
  • deno_url: Provided by the deno_url crate
  • deno_console: Provided by the deno_console crate

Provided ops

Following ops are provided, which can be accessed through Deno.ops:

  • op_fetch
  • op_fetch_send
  • op_utf8_to_byte_string
  • op_fetch_custom_client

Dependencies

~138MB
~3M SLoC