Deno v2.5.1 released!

NewsBot · 17 September 2025 08:16

Deno v2.5.1 has been released.

2.5.1 / 2025.09.16

feat(unstable): support Deno.HttpClient in WebSocket (#30692)

feat(unstable): tcp proxy for Deno.HttpClient (#30700)

fix(bundle): set the type of the outputFile in the deno bundle to
Uint8Array<ArrayBuffer> (#30716)

fix(check): filter resolution errors for bare ambient modules (#30690)

fix(ext/fetch): mark unix and vsock proxy conns as proxy (#30699)

fix(ext/node): handle falsy values enumerability in process.env (#30708)

fix(ext/node): implement fchmod on windows (#30704)

fix(ext/node): make fs.glob accepts URL cwd (#30705)

fix(ext/node): set default callback for fs.close (#30720)

fix(ext/node): validate fs.close callback function (#30679)

fix(ext/node): validate fs.read on empty buffer (#30706)

fix(ext/node): validate readlink arguments (#30691)

fix(ffi): check that fast calls are taken (#30658)

fix(http): duplicate listener should inherit onError and signal (#30680)

fix(init): regression where deno init --npm stopped working on mac (#30730)

fix(lsp): don’t write lockfile during cache-on-save (#30733)

fix(node): reduce chance of module not found error due to missing copy package
(#30744)

fix(permissions): point to correct config file in error message in workspace
containing permissions at root (#30742)

fix: Add info/hint for unstable Deno.bundle API (#30682)

Link: Release v2.5.1 · denoland/deno · GitHub