Changelog

denoland/deno · · 23 commits

Pack lands, perf work and Node fixes

Deno adds npm tarball packing and package.json controls, while Node compatibility and startup performance keep improving.

bartlomieju nathanwhit seroperson marvinhagemeister nathanwhitbot

Deno gets pack for npm tarballs (marvinhagemeister0b92830)

Adds a new deno pack command that builds npm-compatible .tgz artifacts from Deno/JSR projects. It transpiles sources, rewrites specifiers, generates package metadata, and can optionally skip type extraction, source maps, or the Deno shim.

module.register() now works in compiled binaries (bartlomieju8595dec)

deno compile binaries can now use module.registerHooks() and module.register(), letting user hook modules intercept loads inside standalone apps. This is a meaningful unlock for compiled tools that need runtime transpilation or custom module resolution.

NODE_EXTRA_CA_CERTS is now honored (seropersonb422a1f)

Deno now supports Node's NODE_EXTRA_CA_CERTS at the root certificate store level, so extra CA certs apply to all TLS paths. That closes a compatibility gap for fetch(), Deno.connectTls(), and Node TLS/HTTPS polyfills.

Node sockets and IPC handle passing get broader support (bartlomiejudf92ffe, bartlomieju82588c3, bartlomieju7b82b09)

Node compatibility was expanded to handle abstract Unix sockets on Linux and to preserve expected child_process.send() backpressure behavior. The IPC work also adds support for passing dgram.Socket handles over child-process IPC, which fixes real-world Node ecosystem breakage.

Major startup and runtime memory reductions (bartlomieju2802b56, bartlomieju6100ec3, bartlomiejue481bf7, bartlomieju2aa2842, bartlomieju78ee331, bartlomiejub285828)

A large chunk of Node and runtime internals were moved to lazy-loaded scripts instead of being eagerly included in snapshots, including events, util, assert, buffer, process, and several runtime JS files. This should improve startup cost, reduce snapshot size, and lower memory use for workloads that don't touch those modules.

HTTP autodetect gets a faster connection path (nathanwhit030c822)

The clear-text HTTP server path now splits autodetection work so it avoids allocating the HTTP/2 future when the connection is plainly HTTP/1. That's a targeted performance win for a very hot network path.

deno compile shows progress while building (bartlomieju6238501)

Compiled builds now surface a progress bar in TTYs and phase-by-phase log output in non-interactive environments. This makes long compile jobs much less opaque, especially for projects with large dependency trees.

Other misc changes

  • Fixed a Node backpressure edge case in child_process.send().
  • Bumped openssl and aws-lc-rs/aws-lc-sys dependencies.
  • Disabled a couple of flaky Windows tests.
  • Small build/runtime fixes and internal refactors.