reorg: move JS ops implementations to cli/js/ops/, part 3 (#4302)

Following JS ops were moved to separate files in cli/js/ops directory:
- net
- tls
- fs

cli/js/ops/fs/remove.ts

@@ -0,0 +1,33 @@
+// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
+import { sendSync, sendAsync } from "../dispatch_json.ts";
+
+export interface RemoveOptions {
+  /** Defaults to `false`. If set to `true`, path will be removed even if
+   * it's a non-empty directory. */
+  recursive?: boolean;
+}
+
+/** Synchronously removes the named file or directory. Throws error if
+ * permission denied, path not found, or path is a non-empty directory and
+ * the `recursive` option isn't set to `true`.
+ *
+ *       Deno.removeSync("/path/to/dir/or/file", { recursive: false });
+ *
+ * Requires `allow-write` permission. */
+export function removeSync(path: string, options: RemoveOptions = {}): void {
+  sendSync("op_remove", { path, recursive: !!options.recursive });
+}
+
+/** Removes the named file or directory. Throws error if permission denied,
+ * path not found, or path is a non-empty directory and the `recursive`
+ * option isn't set to `true`.
+ *
+ *       await Deno.remove("/path/to/dir/or/file", { recursive: false });
+ *
+ * Requires `allow-write` permission. */
+export async function remove(
+  path: string,
+  options: RemoveOptions = {}
+): Promise<void> {
+  await sendAsync("op_remove", { path, recursive: !!options.recursive });
+}