rules/common/avoid_unnecessary_nullable_parameters library

Classes

AvoidUnnecessaryNullableParameters: Flags nullable parameters of private functions/methods where null is never passed at any call site. The parameter could be made non-nullable.

dart_code_quality package
documentation
rules/common/avoid_unnecessary_nullable_parameters.dart

dart_code_quality package

Libraries
main
rules/bloc/avoid_bloc_public_fields
rules/bloc/avoid_bloc_public_methods
rules/bloc/avoid_cubits
rules/bloc/avoid_duplicate_bloc_event_handlers
rules/bloc/avoid_empty_build_when
rules/bloc/avoid_existing_instances_in_bloc_provider
rules/bloc/avoid_instantiating_in_bloc_value_provider
rules/bloc/avoid_passing_bloc_to_bloc
rules/bloc/avoid_passing_build_context_to_blocs
rules/bloc/avoid_returning_value_from_cubit_methods
rules/bloc/bloc_utils
rules/bloc/check_is_not_closed_after_async_gap
rules/bloc/emit_new_bloc_state_instances
rules/bloc/handle_bloc_event_subclasses
rules/bloc/prefer_bloc_event_suffix
rules/bloc/prefer_bloc_extensions
rules/bloc/prefer_bloc_state_suffix
rules/bloc/prefer_correct_bloc_provider
rules/bloc/prefer_immutable_bloc_events
rules/bloc/prefer_immutable_bloc_state
rules/bloc/prefer_multi_bloc_provider
rules/bloc/prefer_sealed_bloc_events
rules/bloc/prefer_sealed_bloc_state
rules/common/arguments_ordering
rules/common/avoid_accessing_collections_by_constant_index
rules/common/avoid_accessing_other_classes_private_members
rules/common/avoid_adjacent_strings
rules/common/avoid_always_null_parameters
rules/common/avoid_assigning_to_static_field
rules/common/avoid_assignments_as_conditions
rules/common/avoid_async_call_in_sync_function
rules/common/avoid_banned_annotations
rules/common/avoid_banned_exports
rules/common/avoid_banned_file_names
rules/common/avoid_banned_imports
rules/common/avoid_banned_names
rules/common/avoid_banned_types
rules/common/avoid_barrel_files
rules/common/avoid_bitwise_operators_with_booleans
rules/common/avoid_bottom_type_in_patterns
rules/common/avoid_bottom_type_in_records
rules/common/avoid_cascade_after_if_null
rules/common/avoid_casting_to_extension_type
rules/common/avoid_collapsible_if
rules/common/avoid_collection_equality_checks
rules/common/avoid_collection_mutating_methods
rules/common/avoid_commented_out_code
rules/common/avoid_complex_arithmetic_expressions
rules/common/avoid_complex_conditions
rules/common/avoid_complex_loop_conditions
rules/common/avoid_conditions_with_boolean_literals
rules/common/avoid_constant_assert_conditions
rules/common/avoid_constant_conditions
rules/common/avoid_constant_switches
rules/common/avoid_continue
rules/common/avoid_contradictory_expressions
rules/common/avoid_declaring_call_method
rules/common/avoid_default_tostring
rules/common/avoid_double_slash_imports
rules/common/avoid_duplicate_cascades
rules/common/avoid_duplicate_collection_elements
rules/common/avoid_duplicate_constant_values
rules/common/avoid_duplicate_exports
rules/common/avoid_duplicate_initializers
rules/common/avoid_duplicate_map_keys
rules/common/avoid_duplicate_mixins
rules/common/avoid_duplicate_named_imports
rules/common/avoid_duplicate_patterns
rules/common/avoid_duplicate_switch_case_conditions
rules/common/avoid_duplicate_test_assertions
rules/common/avoid_dynamic
rules/common/avoid_empty_spread
rules/common/avoid_empty_test_groups
rules/common/avoid_enum_values_by_index
rules/common/avoid_equal_expressions
rules/common/avoid_excessive_expressions
rules/common/avoid_explicit_pattern_field_name
rules/common/avoid_explicit_type_declaration
rules/common/avoid_extensions_on_records
rules/common/avoid_function_type_in_records
rules/common/avoid_future_ignore
rules/common/avoid_future_tostring
rules/common/avoid_generics_shadowing
rules/common/avoid_getter_prefix
rules/common/avoid_global_state
rules/common/avoid_high_cyclomatic_complexity
rules/common/avoid_identical_exception_handling_blocks
rules/common/avoid_if_with_many_branches
rules/common/avoid_ignoring_return_values
rules/common/avoid_immediately_invoked_functions
rules/common/avoid_implicitly_nullable_extension_types
rules/common/avoid_inconsistent_digit_separators
rules/common/avoid_incorrect_uri
rules/common/avoid_inferrable_type_arguments
rules/common/avoid_inverted_boolean_checks
rules/common/avoid_keywords_in_wildcard_pattern
rules/common/avoid_late_final_reassignment
rules/common/avoid_late_keyword
rules/common/avoid_local_functions
rules/common/avoid_long_files
rules/common/avoid_long_functions
rules/common/avoid_long_parameter_list
rules/common/avoid_long_records
rules/common/avoid_map_keys_contains
rules/common/avoid_missed_calls
rules/common/avoid_missing_completer_stack_trace
rules/common/avoid_missing_enum_constant_in_map
rules/common/avoid_missing_interpolation
rules/common/avoid_missing_test_files
rules/common/avoid_misused_set_literals
rules/common/avoid_misused_test_matchers
rules/common/avoid_misused_wildcard_pattern
rules/common/avoid_mixing_named_and_positional_fields
rules/common/avoid_multi_assignment
rules/common/avoid_mutating_parameters
rules/common/avoid_negated_conditions
rules/common/avoid_negations_in_equality_checks
rules/common/avoid_nested_assignments
rules/common/avoid_nested_conditional_expressions
rules/common/avoid_nested_extension_types
rules/common/avoid_nested_futures
rules/common/avoid_nested_records
rules/common/avoid_nested_shorthands
rules/common/avoid_nested_streams_and_futures
rules/common/avoid_nested_switch_expressions
rules/common/avoid_nested_switches
rules/common/avoid_nested_try_statements
rules/common/avoid_never_passed_parameters
rules/common/avoid_non_ascii_symbols
rules/common/avoid_non_empty_constructor_bodies
rules/common/avoid_non_final_exception_class_fields
rules/common/avoid_non_null_assertion
rules/common/avoid_not_encodable_in_to_json
rules/common/avoid_nullable_interpolation
rules/common/avoid_nullable_parameters_with_default_values
rules/common/avoid_nullable_tostring
rules/common/avoid_one_field_records
rules/common/avoid_only_rethrow
rules/common/avoid_passing_async_when_sync_expected
rules/common/avoid_passing_default_values
rules/common/avoid_passing_self_as_argument
rules/common/avoid_positional_record_field_access
rules/common/avoid_recursive_calls
rules/common/avoid_recursive_tostring
rules/common/avoid_redundant_else
rules/common/avoid_redundant_positional_field_name
rules/common/avoid_redundant_pragma_inline
rules/common/avoid_referencing_subclasses
rules/common/avoid_renaming_representation_getters
rules/common/avoid_returning_cascades
rules/common/avoid_returning_void
rules/common/avoid_self_compare
rules/common/avoid_shadowed_extension_methods
rules/common/avoid_shadowing
rules/common/avoid_similar_names
rules/common/avoid_single_field_destructuring
rules/common/avoid_slow_collection_methods
rules/common/avoid_stream_tostring
rules/common/avoid_substring
rules/common/avoid_suspicious_global_reference
rules/common/avoid_suspicious_super_overrides
rules/common/avoid_throw
rules/common/avoid_throw_in_catch_block
rules/common/avoid_throw_objects_without_tostring
rules/common/avoid_top_level_members_in_tests
rules/common/avoid_type_casts
rules/common/avoid_unassigned_fields
rules/common/avoid_unassigned_late_fields
rules/common/avoid_unassigned_local_variable
rules/common/avoid_unassigned_stream_subscriptions
rules/common/avoid_uncaught_future_errors
rules/common/avoid_unconditional_break
rules/common/avoid_unknown_pragma
rules/common/avoid_unnecessary_block
rules/common/avoid_unnecessary_call
rules/common/avoid_unnecessary_collections
rules/common/avoid_unnecessary_compare_to
rules/common/avoid_unnecessary_conditionals
rules/common/avoid_unnecessary_constructor
rules/common/avoid_unnecessary_continue
rules/common/avoid_unnecessary_digit_separators
rules/common/avoid_unnecessary_enum_arguments
rules/common/avoid_unnecessary_enum_prefix
rules/common/avoid_unnecessary_extends
rules/common/avoid_unnecessary_futures
rules/common/avoid_unnecessary_getter
rules/common/avoid_unnecessary_if
rules/common/avoid_unnecessary_late_fields
rules/common/avoid_unnecessary_length_check
rules/common/avoid_unnecessary_local_late
rules/common/avoid_unnecessary_local_variable
rules/common/avoid_unnecessary_negations
rules/common/avoid_unnecessary_null_aware_elements
rules/common/avoid_unnecessary_nullable_fields
rules/common/avoid_unnecessary_nullable_parameters
rules/common/avoid_unnecessary_nullable_return_type
rules/common/avoid_unnecessary_overrides
rules/common/avoid_unnecessary_patterns
rules/common/avoid_unnecessary_reassignment
rules/common/avoid_unnecessary_return
rules/common/avoid_unnecessary_statements
rules/common/avoid_unnecessary_super
rules/common/avoid_unnecessary_type_assertions
rules/common/avoid_unreachable_for_loop
rules/common/avoid_unrelated_type_assertions
rules/common/avoid_unrelated_type_casts
rules/common/avoid_unremovable_callbacks_in_listeners
rules/common/avoid_unsafe_collection_methods
rules/common/avoid_unsafe_reduce
rules/common/avoid_unused_after_null_check
rules/common/avoid_unused_assignment
rules/common/avoid_unused_generics
rules/common/avoid_unused_instances
rules/common/avoid_unused_parameters
rules/common/avoid_unused_rule_ignores
rules/common/avoid_weak_cryptographic_algorithms
rules/common/avoid_wildcard_cases_with_enums
rules/common/avoid_wildcard_cases_with_sealed_classes
rules/common/banned_usage
rules/common/binary_expression_operand_order
rules/common/dispose_class_fields
rules/common/double_literal_format
rules/common/enum_constants_ordering
rules/common/format_comment
rules/common/format_test_name
rules/common/function_always_returns_null
rules/common/function_always_returns_same_value
rules/common/handle_throwing_invocations
rules/common/map_keys_ordering
rules/common/match_base_class_default_value
rules/common/match_class_name_pattern
rules/common/match_getter_setter_field_names
rules/common/match_lib_folder_structure
rules/common/max_imports
rules/common/member_ordering
rules/common/missing_test_assertion
rules/common/missing_use_result_annotation
rules/common/move_records_to_typedefs
rules/common/move_variable_closer_to_its_usage
rules/common/move_variable_outside_iteration
rules/common/newline_before_case
rules/common/newline_before_constructor
rules/common/newline_before_method
rules/common/newline_before_return
rules/common/no_empty_block
rules/common/no_empty_string
rules/common/no_equal_arguments
rules/common/no_equal_conditions
rules/common/no_equal_nested_conditions
rules/common/no_equal_switch_case
rules/common/no_equal_switch_expression_cases
rules/common/no_equal_then_else
rules/common/no_magic_number
rules/common/no_magic_string
rules/common/no_object_declaration
rules/common/parameters_ordering
rules/common/pass_optional_argument
rules/common/pattern_fields_ordering
rules/common/prefer_abstract_final_static_class
rules/common/prefer_add_all
rules/common/prefer_addition_subtraction_assignments
rules/common/prefer_any_or_every
rules/common/prefer_assigning_await_expressions
rules/common/prefer_async_await
rules/common/prefer_boolean_prefixes
rules/common/prefer_both_inlining_annotations
rules/common/prefer_bytes_builder
rules/common/prefer_class_destructuring
rules/common/prefer_commenting_future_delayed
rules/common/prefer_compound_assignment_operators
rules/common/prefer_conditional_expressions
rules/common/prefer_contains
rules/common/prefer_correct_callback_field_name
rules/common/prefer_correct_error_name
rules/common/prefer_correct_for_loop_increment
rules/common/prefer_correct_future_return_type
rules/common/prefer_correct_handler_name
rules/common/prefer_correct_json_casts
rules/common/prefer_correct_setter_parameter_name
rules/common/prefer_correct_stream_return_type
rules/common/prefer_correct_switch_length
rules/common/prefer_correct_test_file_name
rules/common/prefer_correct_throws
rules/common/prefer_correct_type_name
rules/common/prefer_declaring_const_constructor
rules/common/prefer_digit_separators
rules/common/prefer_early_return
rules/common/prefer_enums_by_name
rules/common/prefer_expect_later
rules/common/prefer_explicit_function_type
rules/common/prefer_explicit_parameter_names
rules/common/prefer_explicit_type_arguments
rules/common/prefer_extracting_function_callbacks
rules/common/prefer_first
rules/common/prefer_for_in
rules/common/prefer_getter_over_method
rules/common/prefer_immediate_return
rules/common/prefer_iterable_of
rules/common/prefer_last
rules/common/prefer_match_file_name
rules/common/prefer_moving_to_variable
rules/common/prefer_named_boolean_parameters
rules/common/prefer_named_imports
rules/common/prefer_named_parameters
rules/common/prefer_named_record_fields
rules/common/prefer_non_nulls
rules/common/prefer_null_aware_elements
rules/common/prefer_null_aware_spread
rules/common/prefer_overriding_parent_equality
rules/common/prefer_parentheses_with_if_null
rules/common/prefer_prefixed_global_constants
rules/common/prefer_private_extension_type_field
rules/common/prefer_public_exception_classes
rules/common/prefer_pushing_conditional_expressions
rules/common/prefer_redirecting_superclass_constructor
rules/common/prefer_return_await
rules/common/prefer_returning_condition
rules/common/prefer_returning_conditional_expressions
rules/common/prefer_returning_shorthands
rules/common/prefer_shorthands_with_constructors
rules/common/prefer_shorthands_with_enums
rules/common/prefer_shorthands_with_static_fields
rules/common/prefer_simpler_boolean_expressions
rules/common/prefer_simpler_patterns_null_check
rules/common/prefer_single_declaration_per_file
rules/common/prefer_specific_cases_first
rules/common/prefer_specifying_future_value_type
rules/common/prefer_static_method
rules/common/prefer_switch_expression
rules/common/prefer_switch_with_enums
rules/common/prefer_switch_with_sealed_classes
rules/common/prefer_test_matchers
rules/common/prefer_test_structure
rules/common/prefer_type_over_var
rules/common/prefer_typedefs_for_callbacks
rules/common/prefer_unique_test_names
rules/common/prefer_unwrapping_future_or
rules/common/prefer_visible_for_testing_on_members
rules/common/prefer_wildcard_pattern
rules/common/record_fields_ordering
rules/common/tag_name
rules/common/use_existing_destructuring
rules/common/use_existing_variable
rules/easy_localization/avoid_missing_tr
rules/easy_localization/avoid_missing_tr_on_strings
rules/equatable/add_equatable_props
rules/equatable/extend_equatable
rules/equatable/list_all_equatable_fields
rules/equatable/prefer_equatable_mixin
rules/fake_async/avoid_async_callback_in_fake_async
rules/firebase_analytics/incorrect_firebase_event_name
rules/firebase_analytics/incorrect_firebase_parameter_name
rules/flame/avoid_creating_vector_in_update
rules/flame/avoid_initializing_in_on_mount
rules/flame/avoid_redundant_async_on_load
rules/flame/correct_game_instantiating
rules/flutter/add_copy_with
rules/flutter/always_remove_listener
rules/flutter/avoid_border_all
rules/flutter/avoid_disposing_late_fields
rules/flutter/avoid_empty_setstate
rules/flutter/avoid_expanded_as_spacer
rules/flutter/avoid_flexible_outside_flex
rules/flutter/avoid_incomplete_copy_with
rules/flutter/avoid_incorrect_image_opacity
rules/flutter/avoid_inherited_widget_in_initstate
rules/flutter/avoid_late_context
rules/flutter/avoid_missing_controller
rules/flutter/avoid_missing_image_alt
rules/flutter/avoid_mounted_in_setstate
rules/flutter/avoid_recursive_widget_calls
rules/flutter/avoid_returning_widgets
rules/flutter/avoid_shrink_wrap_in_lists
rules/flutter/avoid_single_child_column_or_row
rules/flutter/avoid_state_constructors
rules/flutter/avoid_stateless_widget_initialized_fields
rules/flutter/avoid_undisposed_instances
rules/flutter/avoid_unnecessary_gesture_detector
rules/flutter/avoid_unnecessary_overrides_in_state
rules/flutter/avoid_unnecessary_setstate
rules/flutter/avoid_unnecessary_stateful_widgets
rules/flutter/avoid_wrapping_in_padding
rules/flutter/check_for_equals_in_render_object_setters
rules/flutter/consistent_update_render_object
rules/flutter/dispose_fields
rules/flutter/pass_existing_future_to_future_builder
rules/flutter/pass_existing_stream_to_stream_builder
rules/flutter/prefer_action_button_tooltip
rules/flutter/prefer_align_over_container
rules/flutter/prefer_async_callback
rules/flutter/prefer_center_over_align
rules/flutter/prefer_compute_over_isolate_run
rules/flutter/prefer_const_border_radius
rules/flutter/prefer_constrained_box_over_container
rules/flutter/prefer_container
rules/flutter/prefer_correct_edge_insets_constructor
rules/flutter/prefer_correct_static_icon_provider
rules/flutter/prefer_dedicated_media_query_methods
rules/flutter/prefer_define_hero_tag
rules/flutter/prefer_extracting_callbacks
rules/flutter/prefer_for_loop_in_children
rules/flutter/prefer_padding_over_container
rules/flutter/prefer_single_setstate
rules/flutter/prefer_single_widget_per_file
rules/flutter/prefer_sized_box_square
rules/flutter/prefer_sliver_prefix
rules/flutter/prefer_spacing
rules/flutter/prefer_text_rich
rules/flutter/prefer_transform_over_container
rules/flutter/prefer_using_list_view
rules/flutter/prefer_void_callback
rules/flutter/prefer_widget_private_members
rules/flutter/proper_super_calls
rules/flutter/use_closest_build_context
rules/flutter/use_setstate_synchronously
rules/flutter_hooks/avoid_conditional_hooks
rules/flutter_hooks/avoid_hooks_outside_build
rules/flutter_hooks/avoid_misused_hooks
rules/flutter_hooks/avoid_unnecessary_hook_widgets
rules/flutter_hooks/hooks_utils
rules/flutter_hooks/prefer_use_callback
rules/flutter_hooks/prefer_use_prefix
rules/get_it/avoid_functions_in_register_singleton
rules/getx/always_remove_getx_listener
rules/getx/avoid_getx_rx_inside_build
rules/getx/avoid_mutable_rx_variables
rules/getx/dispose_getx_fields
rules/getx/getx_utils
rules/getx/proper_getx_super_calls
rules/intl/intl_utils
rules/intl/prefer_date_format
rules/intl/prefer_intl_name
rules/intl/prefer_number_format
rules/intl/prefer_providing_intl_description
rules/intl/prefer_providing_intl_examples
rules/intl/provide_correct_intl_args
rules/mocktail/avoid_implementation_in_mocks
rules/mocktail/pass_mock_object
rules/mocktail/prefer_correct_any_matcher
rules/mocktail/use_then_answer
rules/patrol/prefer_custom_finder_over_find
rules/patrol/prefer_symbol_over_key
rules/provider/avoid_instantiating_in_value_provider
rules/provider/avoid_read_inside_build
rules/provider/avoid_watch_outside_build
rules/provider/dispose_providers
rules/provider/prefer_immutable_selector_value
rules/provider/prefer_multi_provider
rules/provider/prefer_nullable_provider_types
rules/provider/prefer_provider_extensions
rules/riverpod/avoid_assigning_notifiers
rules/riverpod/avoid_calling_notifier_members_inside_build
rules/riverpod/avoid_notifier_constructors
rules/riverpod/avoid_nullable_async_value_pattern
rules/riverpod/avoid_public_notifier_properties
rules/riverpod/avoid_ref_inside_state_dispose
rules/riverpod/avoid_ref_read_inside_build
rules/riverpod/avoid_ref_watch_outside_build
rules/riverpod/avoid_unnecessary_consumer_widgets
rules/riverpod/dispose_provided_instances
rules/riverpod/prefer_immutable_provider_arguments
rules/riverpod/use_ref_and_state_synchronously
rules/riverpod/use_ref_read_synchronously
rules/utils/ast_utils
rules/utils/config_utils
rules/utils/package_utils
rules/utils/ref_utils