feat: add ext/node for require support (#15362)

This commit adds "ext/node" extension that implementes CommonJS module system.

In the future this extension might be extended to actually contain implementation of
Node compatibility layer in favor of "deno_std/node".

Currently this functionality is not publicly exposed, it is available via "Deno[Deno.internal].require"
namespace and is meant to be used by other functionality to be landed soon.

This is a minimal first pass, things that still don't work:

support for dynamic imports in CJS
conditional exports

1 files changed, 11 insertions, 0 deletions

diff --git a/cli/tests/testdata/commonjs/example.js b/cli/tests/testdata/commonjs/example.js
new file mode 100644
index 000000000..785078037
--- /dev/null
+++ b/cli/tests/testdata/commonjs/example.js
@@ -0,0 +1,11 @@
+// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
+// deno-lint-ignore no-undef
+const processMod = require("process");
+const osMod = require("node:os");
+console.log("process.pid", processMod.pid);
+console.log("os.EOL", osMod.EOL);
+const leftPad = require("left-pad");
+const json = require("./data");
+console.log(json);
+console.log(leftPad("foo", 5)); // => "  foo"
+console.log("main module", processMod.mainModule.filename);