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Allow .index of enums inside switch statements.

featureProposed language feature that solves one or more problemsProposed language feature that solves one or more problems

Status: Open.

#4588 In dart-lang/language;

· erenpal opened on Dec 7, 2025

Make enhanced enum fields available in constant contexts

requestRequests to resolve a particular developer problemRequests to resolve a particular developer problem

Status: Open.

#4587 In dart-lang/language;

· FMorschel opened on Dec 5, 2025

Primary constructors spec question

bugThere is a mistake in the language specification or in an active documentThere is a mistake in the language specification or in an active document

primary-constructorsFeature for less verbose constructors, otherwise known as declaring constructors.Feature for less verbose constructors, otherwise known as declaring constructors.

Status: Open.

#4586 In dart-lang/language;

· bwilkerson opened on Dec 5, 2025

Weird behaviour of <code>for-in</code> type inference

requestRequests to resolve a particular developer problemRequests to resolve a particular developer problem

Status: Open.

#4584 In dart-lang/language;

· FMorschel opened on Dec 5, 2025

Deferred loading &amp; types

requestRequests to resolve a particular developer problemRequests to resolve a particular developer problem

Status: Open.

#4581 In dart-lang/language;

· mkustermann opened on Dec 4, 2025

Destructuring nullable type in refutable pattern should promote type to non-null

requestRequests to resolve a particular developer problemRequests to resolve a particular developer problem

Status: Open.

#4580 In dart-lang/language;

· benthillerkus opened on Dec 4, 2025

Which kinds of parameters can an external function/method have?

questionFurther information is requestedFurther information is requested

Status: Open.

#4579 In dart-lang/language;

· eernstg opened on Dec 3, 2025

Allow <code>&lt;void&gt;[e]</code> and <code>&lt;void, void&gt;{e: e}</code> where <code>e</code> has type <code>void</code>? Records, too?

Status: Open.

#4574 In dart-lang/language;

· eernstg opened on Nov 25, 2025

Specify order that instance field initializers run with augmentations

augmentationsIssues related to the augmentations proposal.Issues related to the augmentations proposal.

Status: Open.

#4573 In dart-lang/language;

· munificent opened on Nov 22, 2025

Evaluation of field initializers in constructor execution.

featureProposed language feature that solves one or more problemsProposed language feature that solves one or more problems

primary-constructorsFeature for less verbose constructors, otherwise known as declaring constructors.Feature for less verbose constructors, otherwise known as declaring constructors.

Status: Open.

#4572 In dart-lang/language;

· lrhn opened on Nov 21, 2025

Introduce a couple of new potential constants and allow a non-redirecting factory constructor to be constant

enhanced-constRequests or proposals about enhanced constant expressionsRequests or proposals about enhanced constant expressions

featureProposed language feature that solves one or more problemsProposed language feature that solves one or more problems

static-extensionsIssues about the static-extensions featureIssues about the static-extensions feature

Status: Open.

#4571 In dart-lang/language;

· eernstg opened on Nov 20, 2025

Patch files using augmentation parts.

augmentationsIssues related to the augmentations proposal.Issues related to the augmentations proposal.

enhanced-syntaxUsed with proposals about improvements of the Dart grammarUsed with proposals about improvements of the Dart grammar

featureProposed language feature that solves one or more problemsProposed language feature that solves one or more problems

Status: Open.

#4568 In dart-lang/language;

· lrhn opened on Nov 17, 2025