feat(ext/node): embed std/node into the snapshot (#17724)

This commit moves "deno_std/node" in "ext/node" crate. The code is
transpiled and snapshotted during the build process.

During the first pass a minimal amount of work was done to create the
snapshot, a lot of code in "ext/node" depends on presence of "Deno"
global. This code will be gradually fixed in the follow up PRs to migrate
it to import relevant APIs from "internal:" modules.

Currently the code from snapshot is not used in any way, and all
Node/npm compatibility still uses code from 
"https://deno.land/std/node" (or from the location specified by 
"DENO_NODE_COMPAT_URL"). This will also be handled in a follow 
up PRs.

---------

Co-authored-by: crowlkats <crowlkats@toaxl.com>
Co-authored-by: Divy Srivastava <dj.srivastava23@gmail.com>
Co-authored-by: Yoshiya Hinosawa <stibium121@gmail.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/ext/node/polyfills/_http_common.ts b/ext/node/polyfills/_http_common.ts
new file mode 100644
index 000000000..616fbb65d
--- /dev/null
+++ b/ext/node/polyfills/_http_common.ts
@@ -0,0 +1,29 @@
+// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
+// Copyright Joyent and Node contributors. All rights reserved. MIT license.
+
+const tokenRegExp = /^[\^_`a-zA-Z\-0-9!#$%&'*+.|~]+$/;
+/**
+ * Verifies that the given val is a valid HTTP token
+ * per the rules defined in RFC 7230
+ * See https://tools.ietf.org/html/rfc7230#section-3.2.6
+ */
+function checkIsHttpToken(val: string) {
+  return tokenRegExp.test(val);
+}
+
+const headerCharRegex = /[^\t\x20-\x7e\x80-\xff]/;
+/**
+ * True if val contains an invalid field-vchar
+ *  field-value    = *( field-content / obs-fold )
+ *  field-content  = field-vchar [ 1*( SP / HTAB ) field-vchar ]
+ *  field-vchar    = VCHAR / obs-text
+ */
+function checkInvalidHeaderChar(val: string) {
+  return headerCharRegex.test(val);
+}
+
+export const chunkExpression = /(?:^|\W)chunked(?:$|\W)/i;
+export {
+  checkInvalidHeaderChar as _checkInvalidHeaderChar,
+  checkIsHttpToken as _checkIsHttpToken,
+};