dart:async
StreamTransformer
instances created with fromHandlers
with no handleError
callback now forward stack traces along with errors to the resulting streams.dart:core
Uri
added removeFragment
method.String.allMatches
(implementing Pattern.allMatches
) is now lazy, as all allMatches
implementations are intended to be.Resource
is deprecated, and will be removed in a future release.dart:developer
Timeline
class for interacting with Observatory's timeline feature.ServiceExtensionHandler
, ServiceExtensionResponse
, and registerExtension
which enable developers to provide their own VM service protocol extensions.dart:io
Breaking: Secure networking has changed, replacing the NSS library with the BoringSSL library. SecureSocket
, SecureServerSocket
, RawSecureSocket
,RawSecureServerSocket
, HttpClient
, and HttpServer
now all use a SecurityContext
object which contains the certificates and keys used for secure TLS (SSL) networking.
This is a breaking change for server applications and for some client applications. Certificates and keys are loaded into the SecurityContext
from PEM files, instead of from an NSS certificate database. Information about how to change applications that use secure networking is at https://www.dartlang.org/server/tls-ssl.html
HttpClient
no longer sends URI fragments in the request. This is not allowed by the HTTP protocol. The HttpServer
still gracefully receives fragments, but discards them before delivering the request.
Removed server socket references. The use of server socket references was deprecated back in 1.9. Use the shared
flag when creating listening sockets and HttpServer
to distribute accepted sockets between isolates.
dart:isolate
spawnUri
added an environment
named argument.docgen
and ‘dartdocgen’ no longer ship in the sdk. The docgen
sources have been removed from the repository.
This is the last release to ship the VM's “legacy debug protocol”. We intend to remove the legacy debug protocol in Dart VM 1.14.
The VM's Service Protocol has been updated to version 3.0 to take care of a number of issues uncovered by the first few non-observatory clients. This is a potentially breaking change for clients.
dart:io
Pub
Pub will now respect .gitignore
when validating a package before it's published. For example, if a LICENSE
file exists but is ignored, that is now an error.
If the package is in a subdirectory of a Git repository and the entire subdirectory is ignored with .gitignore
, pub will act as though nothing was ignored instead of uploading an empty package.
The heuristics for determining when pub get
needs to be run before various commands have been improved. There should no longer be false positives when non-dependency sections of the pubspec have been modified.
??
: if null operator. expr1 ?? expr2
evaluates to expr1
if not null
, otherwise expr2
.??=
: null-aware assignment. v ??= expr
causes v
to be assigned expr
only if v
is null
.x?.p
: null-aware access. x?.p
evaluates to x.p
if x
is not null
, otherwise evaluates to null
.x?.m()
: null-aware method invocation. x?.m()
invokes m
only if x
is not null
.dart:async
StreamController
added setters for the onListen
, onPause
, onResume
and onCancel
callbacks.dart:convert
LineSplitter
added a split
static method returning an Iterable
.dart:core
Uri
class now perform path normalization when a URI is created. This removes most ..
and .
sequences from the URI path. Purely relative paths (no scheme or authority) are allowed to retain some leading “dot” segments. Also added hasAbsolutePath
, hasEmptyPath
, and hasScheme
properties.dart:developer
log
function to transmit logging events to Observatory.dart:html
NodeTreeSanitizer
added the const trusted
field. It can be used instead of defining a NullTreeSanitizer
class when calling setInnerHtml
or other methods that create DOM from text. It is also more efficient, skipping the creation of a DocumentFragment
.dart:io
dart:isolate
onError
, onExit
and errorsAreFatal
parameters to Isolate.spawnUri
.dart:mirrors
InstanceMirror.delegate
moved up to ObjectMirror
.Documentation tools
dartdoc
is now the default tool to generate static HTML for API docs. Learn more.
docgen
and dartdocgen
have been deprecated. Currently plan is to remove them in 1.13.
Formatter (dartfmt
)
Over 50 bugs fixed.
Optimized line splitter is much faster and produces better output on complex code.
Observatory
Allocation profiling.
New feature to display output from logging.
Heap snapshot analysis works for 64-bit VMs.
Improved ability to inspect typed data, regex and compiled code.
Ability to break on all or uncaught exceptions from Observatory's debugger.
Ability to set closure-specific breakpoints.
‘anext’ - step past await/yield.
Preserve when a variable has been expanded/unexpanded in the debugger.
Keep focus on debugger input box whenever possible.
Echo stdout/stderr in the Observatory debugger. Standalone-only so far.
Minor fixes to service protocol documentation.
Pub
Breaking: various commands that previously ran pub get
implicitly no longer do so. Instead, they merely check to make sure the “.packages” file is newer than the pubspec and the lock file, and fail if it's not.
Added support for --verbosity=error
and --verbosity=warning
.
pub serve
now collapses multiple GET requests into a single line of output. For full output, use --verbose
.
pub deps
has improved formatting for circular dependencies on the entrypoint package.
pub run
and pub global run
Breaking: to match the behavior of the Dart VM, executables no longer run in checked mode by default. A --checked
flag has been added to run them in checked mode manually.
Faster start time for executables that don't import transformed code.
Binstubs for globally-activated executables are now written in the system encoding, rather than always in UTF-8
. To update existing executables, run pub cache repair
.
pub get
and pub upgrade
Pub will now generate a “.packages” file in addition to the “packages” directory when running pub get
or similar operations, per the package spec proposal. Pub now has a --no-package-symlinks
flag that will stop “packages” directories from being generated at all.
An issue where HTTP requests were sometimes made even though --offline
was passed has been fixed.
A bug with --offline
that caused an unhelpful error message has been fixed.
Pub will no longer time out when a package takes a long time to download.
pub publish
Pub will emit a non-zero exit code when it finds a violation while publishing.
.gitignore
files will be respected even if the package isn't at the top level of the Git repository.
Barback integration
A crashing bug involving transformers that only apply to non-public code has been fixed.
A deadlock caused by declaring transformer followed by a lazy transformer (such as the built-in $dart2js
transformer) has been fixed.
A stack overflow caused by a transformer being run multiple times on the package that defines it has been fixed.
A transformer that tries to read a non-existent asset in another package will now be re-run if that asset is later created.
BREAKING The service protocol now sends JSON-RPC 2.0-compatible server-to-client events. To reflect this, the service protocol version is now 2.0.
The service protocol now includes a "jsonrpc"
property in its responses, as opposed to "json-rpc"
.
The service protocol now properly handles requests with non-string ids. Numeric ids are no longer converted to strings, and null ids now don't produce a response.
Some RPCs that didn't include a "jsonrpc"
property in their responses now include one.
WebSocket.close()
would crash if called after WebSocket.cancel()
.pub
executable was run, even if a DART_SDK
environment variable is set.dart:core
Iterable
added an empty
constructor. dcf0286Iterable
can now be extended directly. An alternative to extending IterableBase
from dart:collection
.List
added an unmodifiable
constructor. r45334Map
added an unmodifiable
constructor. r45733int
added a gcd
method. a192ef4int
added a modInverse
method. f6f338cStackTrace
added a fromString
constructor. 68dd6f6Uri
added a directory
constructor. d8dbb4aConcurrentModificationError
as eagerly in release mode. In checked mode, the modification check is still as eager as possible. r45198dart:developer
- NEW
dart:profiler
library.debugger
and inspect
. 6e42aecdart:io
dart:html
Element
methods, appendHtml
and insertAdjacentHtml
now take nodeValidator
and treeSanitizer
parameters, and the inputs are consistently sanitized. r45818 announcementdart:isolate
priority
parameter of Isolate.ping
and Isolate.kill
is now a named parameter named priority
.Isolate.AS_EVENT
priority.Isolate
methods ping
and addOnExitListener
now have a named parameter response
. r45092Isolate.spawnUri
added a named argument checked
.dart:profiler
- DEPRECATED
dart:developer
instead.dart2js --output-type=dart
) utility as part of dart2jsdart:convert
dart:core
Uri.parse
added start
and end
positional arguments.dart:html
CssClassSet
method arguments must now be ‘tokens’, i.e. non-empty strings with no white-space characters. The implementation was incorrect for class names containing spaces. The fix is to forbid spaces and provide a faster implementation. Announcementdart:io
ProcessResult
now exposes a constructor.import
and Isolate.spawnUri
now supports the Data URI scheme on the VM.Running pub run foo
within a package now runs the foo
executable defined by the foo
package. The previous behavior ran bin/foo
. This makes it easy to run binaries in dependencies, for instance pub run test
.
On Mac and Linux, signals sent to pub run
and forwarded to the child command.
This is a bug fix release which merges a number of commits from bleeding_edge
.
dart2js: Addresses as issue with minified Javascript output with CSP enabled - r44453
Editor: Fixes accidental updating of files in the pub cache during rename refactoring - r44677
Editor: Fix for issue 23032 regarding skipped breakpoints on Windows - r44824
dart:mirrors: Fix MethodMirror.source
when the method is on the first line in a script - r44957, r44976
pub: Fix for issue 23084: Pub can fail to load transformers necessary for local development - r44876
Support for async
, await
, sync*
, async*
, yield
, yield*
, and await for
. See the the language tour for more details.
Enum support is fully enabled. See the language tour for more details.
The formatter is much more comprehensive and generates much more readable code. See its tool page for more details.
The analysis server is integrated into the IntelliJ plugin and the Dart editor. This allows analysis to run out-of-process, so that interaction remains smooth even for large projects.
Analysis supports more and better hints, including unused variables and unused private members.
There's a new model for shared server sockets with no need for a Socket
reference.
A new, much faster regular expression engine.
The Isolate API now works across the VM and dart2js
.
For more information on any of these changes, see the corresponding documentation on the Dart API site.
dart:async
:
Future.wait
added a new named argument, cleanUp
, which is a callback that releases resources allocated by a successful Future
.
The SynchronousStreamController
class was added as an explicit name for the type returned when the sync
argument is passed to new StreamController
.
dart:collection
: The new SplayTreeSet.from(Iterable)
constructor was added.
dart:convert
: Utf8Encoder.convert
and Utf8Decoder.convert
added optional start
and end
arguments.
dart:core
:
RangeError
added new static helper functions: checkNotNegative
, checkValidIndex
, checkValidRange
, and checkValueInInterval
.
int
added the modPow
function.
String
added the replaceFirstMapped
and replaceRange
functions.
dart:io
:
Support for locking files to prevent concurrent modification was added. This includes the File.lock
, File.lockSync
, File.unlock
, and File.unlockSync
functions as well as the FileLock
class.
Support for starting detached processes by passing the named mode
argument (a ProcessStartMode
) to Process.start
. A process can be fully attached, fully detached, or detached except for its standard IO streams.
HttpServer.bind
and HttpServer.bindSecure
added the v6Only
named argument. If this is true, only IPv6 connections will be accepted.
HttpServer.bind
, HttpServer.bindSecure
, ServerSocket.bind
, RawServerSocket.bind
, SecureServerSocket.bind
and RawSecureServerSocket.bind
added the shared
named argument. If this is true, multiple servers or sockets in the same Dart process may bind to the same address, and incoming requests will automatically be distributed between them.
Deprecation: the experimental ServerSocketReference
and RawServerSocketReference
classes, as well as getters that returned them, are marked as deprecated. The shared
named argument should be used instead. These will be removed in Dart 1.10.
Socket.connect
and RawSocket.connect
added the sourceAddress
named argument, which specifies the local address to bind when making a connection.
The static Process.killPid
method was added to kill a process with a given PID.
Stdout
added the nonBlocking
instance property, which returns a non-blocking IOSink
that writes to standard output.
dart:isolate
:
The static getter Isolate.current
was added.
The Isolate
methods addOnExitListener
, removeOnExitListener
, setErrorsFatal
, addOnErrorListener
, and removeOnErrorListener
now work on the VM.
Isolates spawned via Isolate.spawn
now allow most objects, including top-level and static functions, to be sent between them.
Code generation for SIMD on ARM and ARM64 is fixed.
A possible crash on MIPS with newer GCC toolchains has been prevented.
A segfault when using rethrow
was fixed (issue 21795).
Breakpoints can be set in the Editor using file suffixes (issue 21280).
IPv6 addresses are properly handled by HttpClient
in dart:io
, fixing a crash in pub (issue 21698).
Issues with the experimental async
/await
syntax have been fixed.
Issues with a set of number operations in the VM have been fixed.
ListBase
in dart:collection
always returns an Iterable
with the correct type argument.
dart:collection
: SplayTree
added the toSet
function.
dart:convert
: The JsonUtf8Encoder
class was added.
dart:core
:
The IndexError
class was added for errors caused by an index being outside its expected range.
The new RangeError.index
constructor was added. It forwards to new IndexError
.
RangeError
added three new properties. invalidProperty
is the value that caused the error, and start
and end
are the minimum and maximum values that the value is allowed to assume.
new RangeError.value
and new RangeError.range
added an optional message
argument.
The new String.fromCharCodes
constructor added optional start
and end
arguments.
dart:io
:
Support was added for the Application-Layer Protocol Negotiation extension to the TLS protocol for both the client and server.
SecureSocket.connect
, SecureServerSocket.bind
, RawSecureSocket.connect
, RawSecureSocket.secure
, RawSecureSocket.secureServer
, and RawSecureServerSocket.bind
added a supportedProtocols
named argument for protocol negotiation.
RawSecureServerSocket
added a supportedProtocols
field.
RawSecureSocket
and SecureSocket
added a selectedProtocol
field which contains the protocol selected during protocol negotiation.
pub
now generates binstubs for packages that are globally activated so that they can be put on the user's PATH
and used as normal executables. See the pub global activate
documentation.
When using dart2js
, deferred loading now works with multiple Dart apps on the same page.
dart:async
: Zone
, ZoneDelegate
, and ZoneSpecification
added the errorCallback
function, which allows errors that have been programmatically added to a Future
or Stream
to be intercepted.
dart:io
:
Breaking change: HttpClient.close
must be called for all clients or they will keep the Dart process alive until they time out. This fixes the handling of persistent connections. Previously, the client would shut down immediately after a request.
Breaking change: HttpServer
no longer compresses all traffic by default. The new autoCompress
property can be set to true
to re-enable compression.
dart:isolate
: Isolate.spawnUri
added the optional packageRoot
argument, which controls how it resolves package:
URIs.