• Clearly mark discontinued in readme.

1.30.0

• new lint: enable_null_safety
• new lint: library_annotations
• miscellaneous documentation improvements

• new lint: enable_null_safety
• new lint: library_annotations
• miscellaneous documentation improvements

1.29.0

• new lint: dangling_library_doc_comments
• fix no_leading_underscores_for_local_identifiers to not report super formals as local variables
• fix unnecessary_overrides false negatives
• fix cancel_subscriptions for nullable fields
• new lint: collection_methods_unrelated_type
• update library_names to support unnamed libraries
• fix unnecessary_parenthesis support for as-expressions
• fix use_build_context_synchronously to check for context property accesses
• fix false positive in comment_references
• improved unrelated type checks to handle enums and cascades
• fix unnecessary_brace_in_string_interps for this expressions
• update use_build_context_synchronously for BuildContext.mounted
• improve flutter_style_todos to handle more cases
• fix use_build_context_synchronously to check for BuildContexts in named expressions
• fix exhaustive_cases to check parenthesized expressions
• performance improvements for:
  • avoid_null_checks_in_equality_operators
  • join_return_with_statement
  • recursive_getters
  • unnecessary_lambdas
  • diagnostic_describe_all_properties
  • prefer_foreach
  • avoid_escaping_inner_quotes
  • cascade_invocations
  • tighten_type_of_initializing_formals
  • prefer_interpolation_to_compose_strings
  • prefer_constructors_over_static_methods
  • avoid_returning_null
  • parameter_assignments
  • prefer_constructors_over_static_methods
  • prefer_interpolation_to_compose_strings
  • avoid_returning_null
  • avoid_returning_this
  • flutter_style_todos
  • avoid_positional_boolean_parameters
  • prefer_const_constructors
• new lint: implicit_call_tearoffs
• new lint: unnecessary_library_directive

• new lint: dangling_library_doc_comments
• fix no_leading_underscores_for_local_identifiers to not report super formals as local variables
• fix unnecessary_overrides false negatives
• fix cancel_subscriptions for nullable fields
• new lint: collection_methods_unrelated_type
• update library_names to support unnamed libraries
• fix unnecessary_parenthesis support for as-expressions
• fix use_build_context_synchronously to check for context property accesses
• fix false positive in comment_references
• improved unrelated type checks to handle enums and cascades
• fix unnecessary_brace_in_string_interps for this expressions
• update use_build_context_synchronously for BuildContext.mounted
• improve flutter_style_todos to handle more cases
• fix use_build_context_synchronously to check for BuildContexts in named expressions
• fix exhaustive_cases to check parenthesized expressions
• performance improvements for:
  • avoid_null_checks_in_equality_operators
  • join_return_with_statement
  • recursive_getters
  • unnecessary_lambdas
  • diagnostic_describe_all_properties
  • prefer_foreach
  • avoid_escaping_inner_quotes
  • cascade_invocations
  • tighten_type_of_initializing_formals
  • prefer_interpolation_to_compose_strings
  • prefer_constructors_over_static_methods
  • avoid_returning_null
  • parameter_assignments
  • prefer_constructors_over_static_methods
  • prefer_interpolation_to_compose_strings
  • avoid_returning_null
  • avoid_returning_this
  • flutter_style_todos
  • avoid_positional_boolean_parameters
  • prefer_const_constructors
• new lint: implicit_call_tearoffs
• new lint: unnecessary_library_directive

1.28.0

• update avoid_redundant_argument_values to work with enum declarations
• performance improvements for prefer_contains
• new lint: unreachable_from_main
• (internal): analyzer API updates and DartTypeUtilities refactoring

• update avoid_redundant_argument_values to work with enum declarations
• performance improvements for prefer_contains
• new lint: unreachable_from_main
• (internal): analyzer API updates and DartTypeUtilities refactoring

1.27.0

• fix avoid_redundant_argument_values when referencing required
  parameters in legacy libraries
• performance improvements for use_late_for_private_fields_and_variables
• new lint: use_string_in_part_of_directives
• fixed use_super_parameters false positive with repeated super
  parameter references
• updated use_late_for_private_fields_and_variables to handle enums
• fixed prefer_contains false positive when start index is non-zero
• improved noop_primitive_operations to catch .toString()
  in string interpolations
• updated public_member_api_docs to report diagnostics on extension
  names (instead of bodies)
• miscellaneous documentation improvements
• (internal): DartTypeUtilities refactoring

• fix avoid_redundant_argument_values when referencing required parameters in legacy libraries
• performance improvements for use_late_for_private_fields_and_variables
• new lint: use_string_in_part_of_directives
• fixed use_super_parameters false positive with repeated super parameter references
• updated use_late_for_private_fields_and_variables to handle enums
• fixed prefer_contains false positive when start index is non-zero
• improved noop_primitive_operations to catch .toString() in string interpolations
• updated public_member_api_docs to report diagnostics on extension names (instead of bodies)
• miscellaneous documentation improvements
• (internal): DartTypeUtilities refactoring

1.26.0

• new lint: combinators_ordering
• fixed use_colored_box and use_decorated_box to not over-report
  on containers without a child
• fixed false positive for unnecessary_parenthesis on a map-or-set
  literal at the start of an expression statement
• fixed false positive for prefer_final_locals reporting on fields
• fixed unnecessary_overrides to allow overrides on @Protected
  members
• fixed avoid_multiple_declarations_per_line false positive in
  for statements
• fixed prefer_final_locals false positive on declaration lists
  with at least one non-final variable
• fixed use_build_context_synchronously to handle awaits in
  if conditions

• new lint: combinators_ordering
• fixed use_colored_box and use_decorated_box to not over-report on containers without a child
• fixed false positive for unnecessary_parenthesis on a map-or-set literal at the start of an expression statement
• fixed false positive for prefer_final_locals reporting on fields
• fixed unnecessary_overrides to allow overrides on @Protected members
• fixed avoid_multiple_declarations_per_line false positive in for statements
• fixed prefer_final_locals false positive on declaration lists with at least one non-final variable
• fixed use_build_context_synchronously to handle awaits in if conditions

• new lint: discarded_futures
• improved message and highlight range for no_duplicate_case_values
• performance improvements for lines_longer_than_80_chars, prefer_const_constructors_in_immutables, and prefer_initializing_formals

• fix prefer_final_parameters to support super parameters
• new lint: unnecessary_to_list_in_spreads
• fix unawaited_futures to handle string interpolated futures
• update use_colored_box to not flag nullable colors
• new lint: unnecessary_null_aware_operator_on_extension_on_nullable

• fixed no_leading_underscores_for_local_identifiers to lint local function declarations
• fixed avoid_init_to_null to correctly handle super initializing defaults that are non-null
• updated no_leading_underscores_for_local_identifiers to allow identifiers with just underscores
• fixed flutter_style_todos to support usernames that start with a digit
• updated require_trailing_commas to handle functions in asserts and multi-line strings
• updated unsafe_html to allow assignments to img.src
• fixed unnecessary_null_checks to properly handle map literal entries

• fixed false positives for unnecessary_getters_setters and prefer_final_fieldswith enhanced enums
• updated to analyzer 3.4.0 APIs
• fixed null-safe variance in invariant_booleans

• several use_super_parameters false positive fixes
• updated depend_on_referenced_packages to treat flutter_gen as a virtual package, not needing an explicit dependency

• bumped language lower-bound constraint to 2.15.0

• fixed use_key_in_widget_constructors false positive with key super parameter initializers
• fixed use_super_parameters false positive with field formal params
• updated unnecessary_null_checks and null_check_on_nullable_type_parameter to handle list/set/map literals, and yield and await expressions

• renamed use_super_initializers to use_super_parameters
• fixed unnecessary_null_aware_assignments property-access false positive

• new lint: use_super_initializers
• new lint: use_enums
• new lint: use_colored_box
• performance improvements for sort_constructors
• doc improvements for always_use_package_imports, avoid_print, and avoid_relative_lib_imports
• update avoid_void_async to skip main functions
• update prefer_final_parameters to not super on super params
• lint updates for enhanced-enums and super-initializer language features
• updated unnecessary_late to report on the variable name
• marked null_check_on_nullable_type_parameter stable

• extend camel_case_types to cover enums
• fix no_leading_underscores_for_local_identifiers to not mis-flag field formal parameters with default values
• fix prefer_function_declarations_over_variables to not mis-flag non-final fields
• performance improvements for prefer_contains
• update exhaustive_cases to skip deprecated values that redirect to other values

• update to analyzer version 3.0

• new lint: unnecessary_late
• fix to no_leading_underscores_for_local_identifiers to allow underscores in catch clauses

• doc improvements for prefer_initializing_formals
• updates to secure_pubspec_urls to check issue_tracker and repository entries
• new lint: conditional_uri_does_not_exist
• performance improvements for missing_whitespace_between_adjacent_strings

• new lint: use_decorated_box
• new lint: no_leading_underscores_for_library_prefixes
• new lint: no_leading_underscores_for_local_identifiers
• new lint: secure_pubspec_urls
• new lint: sized_box_shrink_expand
• new lint: avoid_final_parameters
• improved docs for omit_local_variable_types

• allow while (true) { ...} in literal_only_boolean_expressions
• fixed file_names to report at the start of the file (not the entire compilation unit)
• fixed prefer_collection_literals named typed param false positive
• control flow improvements for use_build_context_synchronously

• fixed unnecessary_lambdas false positive for const constructor invocations
• updated avoid_print to allow kDebugMode-wrapped print calls
• fixed handling of initializing formals in prefer_final_parameters
• fixed unnecessary_parenthesis false positive with function expressions

• added support for constructor tear-offs to avoid_redundant_argument_values, unnecessary_lambdas, and unnecessary_parenthesis
• new lint: unnecessary_constructor_name to flag unnecessary uses of .new

• improved regular expression parsing performance for common checks (camel_case_types, file_names, etc.)
• (internal) migrated to analyzer 2.1.0 APIs
• fixed false positive in use_build_context_synchronously in awaits inside anonymous functions
• fixed overridden_fields false positive w/ static fields
• fixed false positive in avoid_null_checks_in_equality_operators w/ non-nullable params
• fixed false positive for deferred imports in prefer_const_constructors

• marked avoid_dynamic_calls stable
• (internal) removed unused MockPubVisitor and MockRule classes
• fixed prefer_void_to_null false positive w/ overridden properties
• (internal) removed references to NodeLintRule in lint rule declarations
• fixed prefer_void_to_null false positive on overriding returns
• fixed prefer_generic_function_type_aliases false positive w/ incomplete statements
• fixed false positive for prefer_initializing_formals with factory constructors
• fixed void_checks false positives with incomplete source
• updated unnecessary_getters_setters to only flag the getter
• improved messages for avoid_renaming_method_parameters
• fixed false positive in prefer_void_to_null
• fixed false positive in omit_local_variable_types
• fixed false positive in use_rethrow_when_possible
• performance improvements for annotate_overrides, prefer_contains, and prefer_void_to_null

• performance improvements for prefer_is_not_empty
• fixed false positive in no_logic_in_create_state
• improve package_names to allow dart identifiers as package names
• fixed false-positive in package_names (causing keywords to wrongly get flagged)
• fixed avoid_classes_with_only_static_member to check for inherited members and also flag classes with only methods
• fixed curly_braces_in_flow_control_structures to properly flag terminating else-if blocks
• improved always_specify_types to support type aliases
• fixed false positive in unnecessary_string_interpolations w/ nullable interpolated strings
• fixed false positive in avoid_function_literals_in_foreach_calls for nullable iterables
• fixed false positive in avoid_returning_null w/ NNBD
• fixed false positive in use_late_for_private_fields_and_variables in the presence of const constructors
• new lint: eol_at_end_of_file
• updated analyzer constraint to >=2.0.0 <3.0.0

• Update analyzer constraint to >=1.7.0 <3.0.0.
• Update meta constraint to >=1.3.0 <3.0.0.

• fixed case-sensitive false positive in use_full_hex_values_for_flutter_colors
• improved try-block and switch statement flow analysis for use_build_context_synchronously
• updated use_setters_to_change_properties to only highlight a method name, not the entire body and doc comment
• updated unnecessary_getters_setters to allow otherwise "unnecessary" getters and setters with annotations
• updated missing_whitespace_between_adjacent_strings to allow String interpolations at the beginning and end of String literals
• updated unnecessary_getters_setters to allow for setters with non-basic assignments (for example, ??= or +=)

• reverted relaxation of sort_child_properties_last to allow for a trailing Widget in instance creations

• relaxed non_constant_identifier_names to allow for a trailing underscore
• fixed false negative in prefer_final_parameters where first parameter is final
• improved directives_ordering sorting of directives with dot paths and dot-separated package names
• relaxed sort_child_properties_last to allow for a trailing Widget in instance creations

• (internal) migrated to SecurityLintCode instead of deprecated SecurityLintCodeWithUniqueName
• (internal) fixed avoid_types_as_parameter_names to skip field formal parameters
• fixed false positives in prefer_interpolation_to_compose_strings where the left operand is not a String
• fixed false positives in only_throw_errors for misidentified type variables
• new lint: depend_on_referenced_packages
• update avoid_returning_null_for_future to skip checks for null-safe libraries
• new lint: use_test_throws_matchers
• relax sort_child_properties_last to accept closures after child
• performance improvements for prefer_contains and prefer_is_empty
• new lint: noop_primitive_operations
• mark avoid_web_libraries_in_flutter as stable
• new lint: prefer_final_parameters
• update prefer_initializing_formals to allow assignments where identifier names don't match

• directives_ordering now checks ordering of package: imports in code outside pub packages
• simple reachability analysis added to use_build_context_synchronously to short-circuit await-discovery in terminating blocks
• use_build_context_synchronously updated to recognize nullable types when accessed from legacy libraries

• non_constant_identifier_names updated to check local variables, for-loop initializers and catch clauses
• error range of lines_longer_than_80_chars updated to start at 80 to make splitting easier
• new lint: require_trailing_commas
• new lint: prefer_null_aware_method_calls

• fix: adjusted SDK lower bound to 2.12.0-0 (from 2.13.0-0)

• improvements to iterable_contains_unrelated_type to better support List content checks
• fixes to camel_case_types and prefer_mixin to support non-function type aliases

• fixed prefer_mixin to properly make exceptions for dart.collection legacy mixins
• improved formatting of source examples in docs
• new lint: use_build_context_synchronously (experimental)
• new lint: avoid_multiple_declarations_per_line

• full library migration to null-safety
• new lint: use_if_null_to_convert_nulls_to_bools
• new lint: deprecated_consistency
• new lint: use_named_constants
• deprecation of avoid_as

• fixed a bug where avoid_dynamic_calls produced false-positives for .call()

• fixed crash in prefer_collection_literals when there is no static parameter element

• fixed false negatives for prefer_collection_literals when a LinkedHashSet or LinkedHashMap instantiation is passed as the argument to a function in any position other than the first
• fixed false negatives for prefer_collection_literals when a LinkedHashSet or LinkedHashMap instantiation is used in a place with a static type other than Set or Map

• (internal): update to new PhysicalResourceProvider API

• fixed false positives in prefer_constructors_over_static_methods
• updated package_names to allow leading underscores

• fixed NPEs in unnecessary_null_checks

• fixed NPE in unnecessary_null_checks
• fixed NPE in missing_whitespace_between_adjacent_strings
• updated void_checks for NNBD
• fixed range error in unnecessary_string_escapes
• fixed false positives in unnecessary_null_types
• fixed prefer_constructors_over_static_methods to respect type parameters
• updated always_require_non_null_named_parameters to be NNBD-aware
• updated unnecessary_nullable_for_final_variable_declarations to allow dynamic
• update overridden_fields to not report on abstract parent fields
• fixes to unrelated_type_equality_checks for NNBD
• improvement to type_init_formalsto allow types not equal to the field type

• performance improvements to always_use_package_imports, avoid_renaming_method_parameters, prefer_relative_imports and public_member_api_docs
• (internal): update to analyzer 0.40.4 APIs

• new lint: cast_nullable_to_non_nullable
• new lint: null_check_on_nullable_type_parameter
• new lint: tighten_type_of_initializing_formals
• update public_member_apis to check generic type aliases
• (internal): update to new analyzer APIs

• fix close_sinks to handle this-prefixed property accesses
• new lint: unnecessary_null_checks
• fix unawaited_futures to handle Future subtypes
• new lint: avoid_type_to_string

• new lint: unnecessary_nullable_for_final_variable_declarations
• fixed NPE in prefer_asserts_in_initializer_lists
• fixed range error in unnecessary_string_escapes
• unsafe_html updated to support unique error codes
• updates to diagnostic_describe_all_properties to check for Diagnosticables (not DiagnosticableMixins)
• new lint: use_late
• fixed unnecessary_lambdas to respect deferred imports
• updated public_member_api_docs to check mixins
• updated unnecessary_statements to skip as expressions
• fixed prefer_relative_imports to work with path dependencies

• fixed directives_ordering to remove third party package special-casing
• fixed unnecessary_lambdas to check for tearoff assignability
• fixed exhaustive_cases to not flag missing cases that are defaulted
• fixed prefer_is_empty to special-case assert initializers and const contexts
• test utilities moved to: lib/src/test_utilities
• new lint: do_not_use_environment

• new lint: no_default_cases (experimental)
• new lint: exhaustive_cases
• updated type_annotate_public_apis to allow inferred types in final field assignments
• updated prefer_mixin to allow "legacy" SDK abstract class mixins
• new lint: use_is_even_rather_than_modulo
• update unsafe_html to use a SecurityLintCode (making it un-ignorable)
• improved sized_box_for_whitespace to address false-positives

• updated avoid_types_as_parameter_names to check catch-clauses
• fixed unsafe_html to check attributes and methods on extensions
• extended unsafe_html to include Window.open, Element.html and DocumentFragment.html in unsafe API checks
• improved docs for sort_child_properties_last
• (internal) package:analyzer API updates
• new lint: sized_box_for_whitespace

• fixed avoid_shadowing_type_parameters to support extensions and mixins
• updated non_constant_identifier_names to allow named constructors made up of only underscores (_)
• updated avoid_unused_constructor_parameters to ignore unused params named in all underscores (_)

• updated documentation links
• one_member_abstracts updated to not lint classes with mixins or implementing interfaces
• unnecessary_getters_setters fixed to ignore cases where a getter/setter is deprecated
• new lint: leading_newlines_in_multiline_strings
• improved highlight ranges for avoid_private_typedef_functions and avoid_returning_null_for_future

• marked prefer_typing_uninitialized_variables and omit_local_variable_types as compatible

• new lint: use_raw_strings
• new lint: unnecessary_raw_strings
• new lint: avoid_escaping_inner_quotes
• new lint: unnecessary_string_escapes
• incompatible rule documentation improvements

• fixed flutter web plugin detection in avoid_web_libraries_in_flutter
• new lint: unnecessary_string_interpolations
• new lint: missing_whitespace_between_adjacent_strings
• avoid_unused_constructor_parameters updated to ignore deprecated parameters
• new lint: no_runtimeType_toString
• miscellaneous doc fixes

• improvedprefer_single_quotes lint message
• unnecessary_finals fixed to not flag fields
• unnecessary_lambdas fixed to work with type arguments
• (internal) migrated to use analyzer LinterContext.resolveNameInScope() API