denoland/deno
denoland/deno
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release notes
Published 4/11/2025
PatchContains new featuresUpgrade
deno upgrade
Or install for the first time
curl -fsSL https://deno.land/install.sh | sh
deno compile fixesTwo fixes make the deno compile tool more robust. First, a bug causing a panic when a node_modules directory was included during compilation was fixed (#28782). Previously, running deno compile in a project with a node_modules folder could crash the compiler; now it handles such folders gracefully without errors. Second, on Windows, executable icons are embedded correctly when using the --icon option (#28771). Deno now preserves the proper resource ordering for multi-resolution .ico files, so compiled .exe files will display their icon in all sizes as expected. Together, these improvements make Deno’s single-binary compilation more reliable across different project structures and platforms.
This release brings a host of improvements to Deno’s Node compatibility layer, implementing missing APIs and fixing inconsistencies:
fs/promises FileHandle class now supports the .createReadStream() and .createWriteStream() methods (#28700).util.parseArgs() API now correctly supports negated flags (the --no- prefix) via its allowNegative option (#28811).Buffer.copyBytesFrom() static method (#28829) and ensures that cipher methods return a Node Buffer object (#28826).process.loadEnvFile(path) (#28824) and a working .reset() on the event loop delay histogram (#2888).stream.finished() now supports Web Streams (#28600); zlib errors are more descriptive (#28831).spawnSync now accepts the input option (#28792)."bin" in package.json by using registry metadata (#28822).deno task now supports backticks and tilde (~) expansion (#28832). For example:
{
"tasks": {
// outputs to a file with a path like: /home/user/logs/2025-04-12T01:38-04:00.log
"build": "deno job.ts > ~/logs/`date -Im`.log"
}
}
This patch release includes fixes for issues introduced by the new panic.deno.com crash reporting system added in recent versions. On macOS, the Deno binary now preserves Node API (N-API) symbols that were previously stripped out as part of the size reduction effort (#28800). This resolves a regression where native Node addons loaded via process.dlopen() could fail to load. It also ensures that native panics involving these symbols can still be properly symbolicated.
In addition, canary panic URLs now include the full Git commit SHA (#28819), improving reliability of remote symbolication for nightly builds. These changes fix rough edges in the new crash reporting pipeline and restore compatibility with common use cases.
release notes
Published 4/11/2025
PatchContains new featuresUpgrade
deno upgrade
Or install for the first time
curl -fsSL https://deno.land/install.sh | sh
deno compile fixesTwo fixes make the deno compile tool more robust. First, a bug causing a panic when a node_modules directory was included during compilation was fixed (#28782). Previously, running deno compile in a project with a node_modules folder could crash the compiler; now it handles such folders gracefully without errors. Second, on Windows, executable icons are embedded correctly when using the --icon option (#28771). Deno now preserves the proper resource ordering for multi-resolution .ico files, so compiled .exe files will display their icon in all sizes as expected. Together, these improvements make Deno’s single-binary compilation more reliable across different project structures and platforms.
This release brings a host of improvements to Deno’s Node compatibility layer, implementing missing APIs and fixing inconsistencies:
fs/promises FileHandle class now supports the .createReadStream() and .createWriteStream() methods (#28700).util.parseArgs() API now correctly supports negated flags (the --no- prefix) via its allowNegative option (#28811).Buffer.copyBytesFrom() static method (#28829) and ensures that cipher methods return a Node Buffer object (#28826).process.loadEnvFile(path) (#28824) and a working .reset() on the event loop delay histogram (#2888).stream.finished() now supports Web Streams (#28600); zlib errors are more descriptive (#28831).spawnSync now accepts the input option (#28792)."bin" in package.json by using registry metadata (#28822).deno task now supports backticks and tilde (~) expansion (#28832). For example:
{
"tasks": {
// outputs to a file with a path like: /home/user/logs/2025-04-12T01:38-04:00.log
"build": "deno job.ts > ~/logs/`date -Im`.log"
}
}
This patch release includes fixes for issues introduced by the new panic.deno.com crash reporting system added in recent versions. On macOS, the Deno binary now preserves Node API (N-API) symbols that were previously stripped out as part of the size reduction effort (#28800). This resolves a regression where native Node addons loaded via process.dlopen() could fail to load. It also ensures that native panics involving these symbols can still be properly symbolicated.
In addition, canary panic URLs now include the full Git commit SHA (#28819), improving reliability of remote symbolication for nightly builds. These changes fix rough edges in the new crash reporting pipeline and restore compatibility with common use cases.
A modern runtime for JavaScript and TypeScript.