reorg: move JS ops implementations to cli/js/ops/, part 1 (#4264)

Following JS ops were moved to separate files in cli/js/ops directory:
- compiler
- dispatch_json
- dispatch_minimal
- errors
- fetch
- fs_events
- os
- random
- repl
- resources
- runtime_compiler
- runtime
- tty

1 files changed, 28 insertions, 0 deletions

diff --git a/cli/js/ops/fetch.ts b/cli/js/ops/fetch.ts
new file mode 100644
index 000000000..c5c0cb883
--- /dev/null
+++ b/cli/js/ops/fetch.ts
@@ -0,0 +1,28 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+
+import { sendAsync } from "./dispatch_json.ts";
+
+interface FetchRequest {
+  url: string;
+  method: string | null;
+  headers: Array<[string, string]>;
+}
+
+export interface FetchResponse {
+  bodyRid: number;
+  status: number;
+  statusText: string;
+  headers: Array<[string, string]>;
+}
+
+export async function fetch(
+  args: FetchRequest,
+  body: ArrayBufferView | undefined
+): Promise<FetchResponse> {
+  let zeroCopy = undefined;
+  if (body) {
+    zeroCopy = new Uint8Array(body.buffer, body.byteOffset, body.byteLength);
+  }
+
+  return await sendAsync("op_fetch", args, zeroCopy);
+}