xeioex

js_set Inline Syntax: Comparison of Approaches

1. $var Shorthand vs No Shorthand

	$var shorthand	No shorthand
Syntax	'$uri.toUpperCase()'	'r.uri.toUpperCase()'
Expands to	r.variables.uri.toUpperCase()	used as-is
nginx-idiomatic	Yes — familiar $var references	No — pure JS, foreign to nginx users
Access scope	r.variables.* only	Full request object (r.uri, r.headersIn, r.args, etc.)

xeioex

js_set Inline Syntax: Comparison of Approaches

1. $var Shorthand vs No Shorthand

	$var shorthand	No shorthand
Syntax	'$uri.toUpperCase()'	'r.uri.toUpperCase()'
Expands to	r.variables.uri.toUpperCase()	used as-is
nginx-idiomatic	Yes — familiar $var references	No — pure JS, foreign to nginx users
Access scope	r.variables.* only	Full request object (r.uri, r.headersIn, r.args, etc.)

xeioex

njs Source Code Internals

Detailed notes on the njs JavaScript engine internals gathered during the optional chaining (?.) implementation. Intended as a reference for future feature work.

---

1. Parser State Machine

xeioex

var _mcp_messages = [];
var _mcp_buffer = "";

function clear_content_length(r) {
    delete r.headersOut['Content-Length'];
}

function filter(r, data, flags) {
    _mcp_buffer += data;
    r.sendBuffer(data, flags);

xeioex

package main

import (
	"bufio"
	"bytes"
	"context"
	"crypto/rand"
	"encoding/json"
	"flag"
	"fmt"

xeioex

/tmp/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/aaaaaaaaaaa

xeioex

diff --git a/examples/t/async_request.t b/examples/t/async_request.t
index 3d09ddd5..88b1e37e 100644
--- a/examples/t/async_request.t
+++ b/examples/t/async_request.t
@@ -21,7 +21,7 @@ use Test::Nginx;
 select STDERR; $| = 1;
 select STDOUT; $| = 1;
 
-my $t = Test::Nginx->new()->has(qw/http/)->plan(1)
+my $t = Test::Nginx->new()->has(qw/http proxy/)->plan(2)

xeioex

commit d5fae2e1ccc37de58573e4961958e82cf8d6d6b2
Author: Dmitry Volyntsev <xeioex@nginx.com>
Date:   Fri Jan 30 17:43:17 2026 -0800

    Attaching JS stack trace for exceptions thrown by C code.
    
    This fixes #1019 issue on Github.

diff --git a/nginx/t/js_fetch_error_stack.t b/nginx/t/js_fetch_error_stack.t
new file mode 100644

xeioex

SharedArrayBuffer Implementation Plan for nginx njs

Overview

Implementation of js_shared_array directive for nginx njs modules (HTTP and Stream) that creates shared memory zones accessible as SharedArrayBuffer objects via ngx.sharedArray.foo dynamic property lookup.

Scope: QuickJS engine only (wrapped in #if (NJS_HAVE_QUICKJS))

Architecture

xeioex

diff --git a/auto/cc b/auto/cc
index 5b21e17e..d2ce8f89 100644
--- a/auto/cc
+++ b/auto/cc
@@ -169,6 +169,20 @@ case $NJS_CC_NAME in
 
 esac
 
+njs_feature="-Wl,-E"
+njs_feature_name=