deno_fetch

此crate实现了Fetch API。

规范: https://fetch.spec.whatwg.org/

使用示例

从javascript，包含扩展的源代码，并将以下属性分配给全局作用域

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,
});

然后从rust，在您的 RuntimeOptions 的 extensions 字段中提供 deno_fetch::deno_fetch::init_ops_and_esm<Permissions>(Default::default())

其中

• Permissions: 实现 deno_fetch::FetchPermissions 的结构体
• Options: 实现 deno_fetch::Options，它实现了 Default

依赖关系

• deno_webidl: 由 deno_webidl crate 提供
• deno_web: 由 deno_web crate 提供
• deno_url: 由 deno_url crate 提供
• deno_console: 由 deno_console crate 提供

提供的操作

以下操作提供，可以通过 Deno.ops 访问

• op_fetch
• op_fetch_send
• op_fetch_response_upgrade
• op_utf8_to_byte_string
• op_fetch_custom_client