Add Deno global namespace (#1748)

Resolves #1705

This PR adds the Deno APIs as a global namespace named `Deno`. For backwards
compatibility, the ability to `import * from "deno"` is preserved. I have tried
to convert every test and internal code the references the module to use the
namespace instead, but because I didn't break compatibility I am not sure.

On the REPL, `deno` no longer exists, replaced only with `Deno` to align with
the regular runtime.

The runtime type library includes both the namespace and module. This means it
duplicates the whole type information. When we remove the functionality from the
runtime, it will be a one line change to the library generator to remove the
module definition from the type library.

I marked a `TODO` in a couple places where to remove the `"deno"` module, but
there are additional places I know I didn't mark.

1 files changed, 6 insertions, 7 deletions

diff --git a/tools/format.ts b/tools/format.ts
index 8f86ea979..33241162b 100755
--- a/tools/format.ts
+++ b/tools/format.ts
@@ -1,27 +1,26 @@
 #!/usr/bin/env deno --allow-read --allow-run
 // Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
-import * as deno from "deno";
 import { join } from "../js/deps/https/deno.land/x/std/fs/path.ts";
 import { findFiles, lookupDenoPath } from "./util.ts";
 
 const clangFormat = join("third_party", "depot_tools", "clang-format");
 const gn = join("third_party", "depot_tools", "gn");
 const yapf = join("third_party", "python_packages", "bin", "yapf");
-const rustfmt = join("third_party", "rustfmt", deno.platform.os, "rustfmt");
+const rustfmt = join("third_party", "rustfmt", Deno.platform.os, "rustfmt");
 const rustfmtConfig = ".rustfmt.toml";
 
 const decoder = new TextDecoder();
 
 async function run(...args: string[]): Promise<void> {
-  if (deno.platform.os === "win") {
+  if (Deno.platform.os === "win") {
     args = ["cmd.exe", "/c", ...args];
   }
-  const p = deno.run({ args, stdout: "piped", stderr: "piped" });
+  const p = Deno.run({ args, stdout: "piped", stderr: "piped" });
   const { code } = await p.status();
   if (code !== 0) {
-    console.log(decoder.decode(await deno.readAll(p.stderr)));
-    console.log(decoder.decode(await deno.readAll(p.stdout)));
-    deno.exit(code);
+    console.log(decoder.decode(await Deno.readAll(p.stderr)));
+    console.log(decoder.decode(await Deno.readAll(p.stdout)));
+    Deno.exit(code);
   }
 }