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

5 files changed, 35 insertions, 0 deletions

diff --git a/cli/tests/testdata/commonjs/node_modules/imports_exports/import_export.js b/cli/tests/testdata/commonjs/node_modules/imports_exports/import_export.js
new file mode 100644
index 000000000..3ebd222ea
--- /dev/null
+++ b/cli/tests/testdata/commonjs/node_modules/imports_exports/import_export.js
@@ -0,0 +1,6 @@
+import dep from "#dep";
+
+export default {
+  bar: "bar",
+  dep,
+};
diff --git a/cli/tests/testdata/commonjs/node_modules/imports_exports/import_polyfill.js b/cli/tests/testdata/commonjs/node_modules/imports_exports/import_polyfill.js
new file mode 100644
index 000000000..76716a3ef
--- /dev/null
+++ b/cli/tests/testdata/commonjs/node_modules/imports_exports/import_polyfill.js
@@ -0,0 +1,3 @@
+export default {
+  polyfill: "import",
+};
diff --git a/cli/tests/testdata/commonjs/node_modules/imports_exports/package.json b/cli/tests/testdata/commonjs/node_modules/imports_exports/package.json
new file mode 100644
index 000000000..5d26359db
--- /dev/null
+++ b/cli/tests/testdata/commonjs/node_modules/imports_exports/package.json
@@ -0,0 +1,17 @@
+{
+  "version": "1.0.0",
+  "name": "imports_exports",
+  "main": "./require_export.cjs",
+  "imports": {
+    "#dep": {
+      "import": "./import_polyfill.js",
+      "require": "./require_polyfill.js"
+    }
+  },
+  "exports": {
+    ".": {
+      "import": "./import_export.js",
+      "require": "./require_export.cjs"
+    }
+  }
+}
diff --git a/cli/tests/testdata/commonjs/node_modules/imports_exports/require_export.cjs b/cli/tests/testdata/commonjs/node_modules/imports_exports/require_export.cjs
new file mode 100644
index 000000000..48923b8d8
--- /dev/null
+++ b/cli/tests/testdata/commonjs/node_modules/imports_exports/require_export.cjs
@@ -0,0 +1,6 @@
+const dep = require("#dep");
+
+module.exports = {
+  foo: "foo",
+  dep,
+};
diff --git a/cli/tests/testdata/commonjs/node_modules/imports_exports/require_polyfill.js b/cli/tests/testdata/commonjs/node_modules/imports_exports/require_polyfill.js
new file mode 100644
index 000000000..1023fd65c
--- /dev/null
+++ b/cli/tests/testdata/commonjs/node_modules/imports_exports/require_polyfill.js
@@ -0,0 +1,3 @@
+module.exports = {
+  polyfill: "require",
+};