Dart Primary Constructors & New Constructor Syntax Skill

Use this skill when helping users write, refactor, or debug code using Dart's

Primary Constructors

feature.

Dart Version Requirements

Dart 3.13 and above

Primary constructors are enabled by default.

Dart 3.12

The feature is available but experimental. Users must explicitly enable the experiment flag

primary-constructors

via

--enable-experiment=primary-constructors

or in

analysis_options.yaml

:

analyzer

:

enable-experiment

:

-

primary

-

constructors

Dart 3.11 and earlier

Primary constructors are not supported. 1. Overview Primary Constructors allow developers to declare a non-redirecting generative constructor as well as a set of instance variables directly in the class header. This significantly reduces boilerplate and improves code readability. Show more Installs 1.7K Repository flutter/agent-plugins GitHub Stars 2.8K First Seen Jul 14, 2026 Security Audits Gen Agent Trust Hub Pass Socket Pass Snyk Pass