Merge deno_cli_snapshots into deno_cli (#3064)

cli/js/link.ts

@@ -0,0 +1,19 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+import { sendSync, sendAsync } from "./dispatch_json.ts";
+import * as dispatch from "./dispatch.ts";
+
+/** Synchronously creates `newname` as a hard link to `oldname`.
+ *
+ *       Deno.linkSync("old/name", "new/name");
+ */
+export function linkSync(oldname: string, newname: string): void {
+  sendSync(dispatch.OP_LINK, { oldname, newname });
+}
+
+/** Creates `newname` as a hard link to `oldname`.
+ *
+ *       await Deno.link("old/name", "new/name");
+ */
+export async function link(oldname: string, newname: string): Promise<void> {
+  await sendAsync(dispatch.OP_LINK, { oldname, newname });
+}