.NET 6 editorconfig

.editorconfig

# EditorConfig is awesome: https://EditorConfig.org

# top-most EditorConfig file
root = true

# Don't use tabs for indentation.
[*]
indent_style = space
# (Please don't specify an indent_size here; that has too many unintended consequences.)

# Code files
[*.{cs,csx,vb,vbx}]
indent_size = 4
insert_final_newline = true
charset = utf-8-bom

# XML project files
[*.{csproj,vbproj,vcxproj,vcxproj.filters,proj,projitems,shproj}]
indent_size = 2

# XML config files
[*.{props,targets,ruleset,config,nuspec,resx,vsixmanifest,vsct}]
indent_size = 2

# JSON files
[*.json]
indent_size = 2

# Powershell files
[*.ps1]
indent_size = 2

# Shell script files
[*.sh]
end_of_line = lf
indent_size = 2

# Dotnet code style settings:
[*.{cs,vb}]

# IDE0055: Fix formatting
dotnet_diagnostic.IDE0055.severity = warning

# Sort using and Import directives with System.* appearing first
dotnet_sort_system_directives_first = true
dotnet_separate_import_directive_groups = false
# Avoid "this." and "Me." if not necessary
dotnet_style_qualification_for_field = false:refactoring
dotnet_style_qualification_for_property = false:refactoring
dotnet_style_qualification_for_method = false:refactoring
dotnet_style_qualification_for_event = false:refactoring

# Use language keywords instead of framework type names for type references
dotnet_style_predefined_type_for_locals_parameters_members = true:suggestion
dotnet_style_predefined_type_for_member_access = true:suggestion

# Suggest more modern language features when available
dotnet_style_object_initializer = true:suggestion
dotnet_style_collection_initializer = true:suggestion
dotnet_style_coalesce_expression = true:suggestion
dotnet_style_null_propagation = true:suggestion
dotnet_style_explicit_tuple_names = true:suggestion

# Whitespace options
dotnet_style_allow_multiple_blank_lines_experimental = false

# Non-private static fields are PascalCase
dotnet_naming_rule.non_private_static_fields_should_be_pascal_case.severity = suggestion
dotnet_naming_rule.non_private_static_fields_should_be_pascal_case.symbols = non_private_static_fields
dotnet_naming_rule.non_private_static_fields_should_be_pascal_case.style = non_private_static_field_style

dotnet_naming_symbols.non_private_static_fields.applicable_kinds = field
dotnet_naming_symbols.non_private_static_fields.applicable_accessibilities = public, protected, internal, protected_internal, private_protected
dotnet_naming_symbols.non_private_static_fields.required_modifiers = static

dotnet_naming_style.non_private_static_field_style.capitalization = pascal_case

# Non-private readonly fields are PascalCase
dotnet_naming_rule.non_private_readonly_fields_should_be_pascal_case.severity = suggestion
dotnet_naming_rule.non_private_readonly_fields_should_be_pascal_case.symbols = non_private_readonly_fields
dotnet_naming_rule.non_private_readonly_fields_should_be_pascal_case.style = non_private_readonly_field_style

dotnet_naming_symbols.non_private_readonly_fields.applicable_kinds = field
dotnet_naming_symbols.non_private_readonly_fields.applicable_accessibilities = public, protected, internal, protected_internal, private_protected
dotnet_naming_symbols.non_private_readonly_fields.required_modifiers = readonly

dotnet_naming_style.non_private_readonly_field_style.capitalization = pascal_case

# Constants are PascalCase
dotnet_naming_rule.constants_should_be_pascal_case.severity = suggestion
dotnet_naming_rule.constants_should_be_pascal_case.symbols = constants
dotnet_naming_rule.constants_should_be_pascal_case.style = constant_style

dotnet_naming_symbols.constants.applicable_kinds = field, local
dotnet_naming_symbols.constants.required_modifiers = const

dotnet_naming_style.constant_style.capitalization = pascal_case

# Static fields are camelCase and start with s_
dotnet_naming_rule.static_fields_should_be_camel_case.severity = suggestion
dotnet_naming_rule.static_fields_should_be_camel_case.symbols = static_fields
dotnet_naming_rule.static_fields_should_be_camel_case.style = static_field_style

dotnet_naming_symbols.static_fields.applicable_kinds = field
dotnet_naming_symbols.static_fields.required_modifiers = static

dotnet_naming_style.static_field_style.capitalization = camel_case
dotnet_naming_style.static_field_style.required_prefix = s_

# Instance fields are camelCase and start with _
dotnet_naming_rule.instance_fields_should_be_camel_case.severity = suggestion
dotnet_naming_rule.instance_fields_should_be_camel_case.symbols = instance_fields
dotnet_naming_rule.instance_fields_should_be_camel_case.style = instance_field_style

dotnet_naming_symbols.instance_fields.applicable_kinds = field

dotnet_naming_style.instance_field_style.capitalization = camel_case
dotnet_naming_style.instance_field_style.required_prefix = _

# Locals and parameters are camelCase
dotnet_naming_rule.locals_should_be_camel_case.severity = suggestion
dotnet_naming_rule.locals_should_be_camel_case.symbols = locals_and_parameters
dotnet_naming_rule.locals_should_be_camel_case.style = camel_case_style

dotnet_naming_symbols.locals_and_parameters.applicable_kinds = parameter, local

dotnet_naming_style.camel_case_style.capitalization = camel_case

# Local functions are PascalCase
dotnet_naming_rule.local_functions_should_be_pascal_case.severity = suggestion
dotnet_naming_rule.local_functions_should_be_pascal_case.symbols = local_functions
dotnet_naming_rule.local_functions_should_be_pascal_case.style = local_function_style

dotnet_naming_symbols.local_functions.applicable_kinds = local_function

dotnet_naming_style.local_function_style.capitalization = pascal_case

# By default, name items with PascalCase
dotnet_naming_rule.members_should_be_pascal_case.severity = suggestion
dotnet_naming_rule.members_should_be_pascal_case.symbols = all_members
dotnet_naming_rule.members_should_be_pascal_case.style = pascal_case_style

dotnet_naming_symbols.all_members.applicable_kinds = *

dotnet_naming_style.pascal_case_style.capitalization = pascal_case

# CSharp code style settings:
[*.cs]
# Newline settings
csharp_new_line_before_open_brace = all
csharp_new_line_before_else = true
csharp_new_line_before_catch = true
csharp_new_line_before_finally = true
csharp_new_line_before_members_in_object_initializers = true
csharp_new_line_before_members_in_anonymous_types = true
csharp_new_line_between_query_expression_clauses = true

# Indentation preferences
csharp_indent_block_contents = true
csharp_indent_braces = false
csharp_indent_case_contents = true
csharp_indent_case_contents_when_block = true
csharp_indent_switch_labels = true
csharp_indent_labels = flush_left

# Whitespace options
csharp_style_allow_embedded_statements_on_same_line_experimental = false
csharp_style_allow_blank_lines_between_consecutive_braces_experimental = false
csharp_style_allow_blank_line_after_colon_in_constructor_initializer_experimental = false

# Prefer "var" everywhere
csharp_style_var_for_built_in_types = true:suggestion
csharp_style_var_when_type_is_apparent = true:suggestion
csharp_style_var_elsewhere = true:suggestion

# Prefer method-like constructs to have a block body
csharp_style_expression_bodied_methods = false:none
csharp_style_expression_bodied_constructors = false:none
csharp_style_expression_bodied_operators = false:none

# Prefer property-like constructs to have an expression-body
csharp_style_expression_bodied_properties = true:none
csharp_style_expression_bodied_indexers = true:none
csharp_style_expression_bodied_accessors = true:none

# Suggest more modern language features when available
csharp_style_pattern_matching_over_is_with_cast_check = true:suggestion
csharp_style_pattern_matching_over_as_with_null_check = true:suggestion
csharp_style_inlined_variable_declaration = true:suggestion
csharp_style_throw_expression = true:suggestion
csharp_style_conditional_delegate_call = true:suggestion

# Space preferences
csharp_space_after_cast = false
csharp_space_after_colon_in_inheritance_clause = true
csharp_space_after_comma = true
csharp_space_after_dot = false
csharp_space_after_keywords_in_control_flow_statements = true
csharp_space_after_semicolon_in_for_statement = true
csharp_space_around_binary_operators = before_and_after
csharp_space_around_declaration_statements = do_not_ignore
csharp_space_before_colon_in_inheritance_clause = true
csharp_space_before_comma = false
csharp_space_before_dot = false
csharp_space_before_open_square_brackets = false
csharp_space_before_semicolon_in_for_statement = false
csharp_space_between_empty_square_brackets = false
csharp_space_between_method_call_empty_parameter_list_parentheses = false
csharp_space_between_method_call_name_and_opening_parenthesis = false
csharp_space_between_method_call_parameter_list_parentheses = false
csharp_space_between_method_declaration_empty_parameter_list_parentheses = false
csharp_space_between_method_declaration_name_and_open_parenthesis = false
csharp_space_between_method_declaration_parameter_list_parentheses = false
csharp_space_between_parentheses = false
csharp_space_between_square_brackets = false

# Blocks are allowed
csharp_prefer_braces = true:silent
csharp_preserve_single_line_blocks = true
csharp_preserve_single_line_statements = true

# Currently only enabled for C# due to crash in VB analyzer.  VB can be enabled once
# https://github.com/dotnet/roslyn/pull/54259 has been published.
dotnet_style_allow_statement_immediately_after_block_experimental = false

[Program.cs]
# CA1812: インスタンス化されていない内部クラスの警告
dotnet_diagnostic.CA1812.severity = none

[*.{cs,vb}]
# CA1018: Mark attributes with AttributeUsageAttribute
dotnet_diagnostic.CA1018.severity = warning

# CA1047: Do not declare protected member in sealed type
dotnet_diagnostic.CA1047.severity = warning

# CA1305: Specify IFormatProvider
dotnet_diagnostic.CA1305.severity = warning

# CA1507: Use nameof to express symbol names
dotnet_diagnostic.CA1507.severity = warning

# CA1725: Parameter names should match base declaration
dotnet_diagnostic.CA1725.severity = suggestion

# CA1802: Use literals where appropriate
dotnet_diagnostic.CA1802.severity = warning

# CA1805: Do not initialize unnecessarily
dotnet_diagnostic.CA1805.severity = warning

# CA1810: Do not initialize unnecessarily
dotnet_diagnostic.CA1810.severity = suggestion

# CA1821: Remove empty Finalizers
dotnet_diagnostic.CA1821.severity = warning

# CA1822: Make member static
dotnet_diagnostic.CA1822.severity = suggestion

# CA1823: Avoid unused private fields
dotnet_diagnostic.CA1823.severity = warning

# CA1825: Avoid zero-length array allocations
dotnet_diagnostic.CA1825.severity = warning

# CA1826: Do not use Enumerable methods on indexable collections. Instead use the collection directly
dotnet_diagnostic.CA1826.severity = warning

# CA1827: Do not use Count() or LongCount() when Any() can be used
dotnet_diagnostic.CA1827.severity = warning

# CA1828: Do not use CountAsync() or LongCountAsync() when AnyAsync() can be used
dotnet_diagnostic.CA1828.severity = warning

# CA1829: Use Length/Count property instead of Count() when available
dotnet_diagnostic.CA1829.severity = warning

# CA1830: Prefer strongly-typed Append and Insert method overloads on StringBuilder
dotnet_diagnostic.CA1830.severity = warning

# CA1831: Use AsSpan or AsMemory instead of Range-based indexers when appropriate
# CA1832: Use AsSpan or AsMemory instead of Range-based indexers when appropriate
# CA1833: Use AsSpan or AsMemory instead of Range-based indexers when appropriate
dotnet_diagnostic.CA1831.severity = warning
dotnet_diagnostic.CA1832.severity = warning
dotnet_diagnostic.CA1833.severity = warning

# CA1834: Consider using 'StringBuilder.Append(char)' when applicable
dotnet_diagnostic.CA1834.severity = warning

# CA1835: Prefer the 'Memory'-based overloads for 'ReadAsync' and 'WriteAsync'
dotnet_diagnostic.CA1835.severity = warning

# CA1836: Prefer IsEmpty over Count
dotnet_diagnostic.CA1836.severity = warning

# CA1837: Use 'Environment.ProcessId'
dotnet_diagnostic.CA1837.severity = warning

# CA1838: Avoid 'StringBuilder' parameters for P/Invokes
dotnet_diagnostic.CA1838.severity = warning

# CA1839: Use 'Environment.ProcessPath'
dotnet_diagnostic.CA1839.severity = warning

# CA1840: Use 'Environment.CurrentManagedThreadId'
dotnet_diagnostic.CA1840.severity = warning

# CA1841: Prefer Dictionary.Contains methods
dotnet_diagnostic.CA1841.severity = warning

# CA1842: Do not use 'WhenAll' with a single task
dotnet_diagnostic.CA1842.severity = warning

# CA1843: Do not use 'WaitAll' with a single task
dotnet_diagnostic.CA1843.severity = warning

# CA1845: Use span-based 'string.Concat'
dotnet_diagnostic.CA1845.severity = warning

# CA1846: Prefer AsSpan over Substring
dotnet_diagnostic.CA1846.severity = warning

# CA2007: Do not directly await a Task
# ASP.NET Core の場合は ConfigureAwait(false) を呼び出さなくても問題ありません
# デスクトップアプリや .NET Framework の ASP.NET アプリケーションなど、同期コンテキストが存在する場合は影響を受けるので注意
dotnet_diagnostic.CA2007.severity = suggestion

# CA2008: Do not create tasks without passing a TaskScheduler
dotnet_diagnostic.CA2008.severity = warning

# CA2009: Do not call ToImmutableCollection on an ImmutableCollection value
dotnet_diagnostic.CA2009.severity = warning

# CA2011: Avoid infinite recursion
dotnet_diagnostic.CA2011.severity = warning

# CA2012: Use ValueTask correctly
dotnet_diagnostic.CA2012.severity = warning

# CA2013: Do not use ReferenceEquals with value types
dotnet_diagnostic.CA2013.severity = warning

# CA2014: Do not use stackalloc in loops.
dotnet_diagnostic.CA2014.severity = warning

# CA2016: Forward the 'CancellationToken' parameter to methods that take one
dotnet_diagnostic.CA2016.severity = warning

# CA2200: Rethrow to preserve stack details
dotnet_diagnostic.CA2200.severity = warning

# CA2208: Instantiate argument exceptions correctly
dotnet_diagnostic.CA2208.severity = warning

# CA5394: 安全でない乱数ジェネレータを使用しています
dotnet_diagnostic.CA5394.severity = suggestion 

# IDE0035: Remove unreachable code
dotnet_diagnostic.IDE0035.severity = warning

# IDE0036: Order modifiers
csharp_preferred_modifier_order = public,private,protected,internal,static,extern,new,virtual,abstract,sealed,override,readonly,unsafe,volatile,async:suggestion
dotnet_diagnostic.IDE0036.severity = warning

# IDE0043: Format string contains invalid placeholder
dotnet_diagnostic.IDE0043.severity = warning

# IDE0044: Make field readonly
dotnet_diagnostic.IDE0044.severity = warning

# IDE0161: Convert to file-scoped namespace
dotnet_diagnostic.IDE0161.severity = warning

# SYSLIB10: 複数のログ記録方法でクラス {class} 内のイベント ID {id} を使用しています
dotnet_diagnostic.SYSLIB1006.severity = none

[**/{test,samples,perf}/**.{cs,vb}]
# CA1018: Mark attributes with AttributeUsageAttribute
dotnet_diagnostic.CA1018.severity = suggestion
# CA1507: Use nameof to express symbol names
dotnet_diagnostic.CA1507.severity = suggestion
# CA1802: Use literals where appropriate
dotnet_diagnostic.CA1802.severity = suggestion
# CA1805: Do not initialize unnecessarily
dotnet_diagnostic.CA1805.severity = suggestion
# CA1823: Avoid zero-length array allocations
dotnet_diagnostic.CA1825.severity = suggestion
# CA1826: Do not use Enumerable methods on indexable collections. Instead use the collection directly
dotnet_diagnostic.CA1826.severity = suggestion
# CA1827: Do not use Count() or LongCount() when Any() can be used
dotnet_diagnostic.CA1827.severity = suggestion
# CA1829: Use Length/Count property instead of Count() when available
dotnet_diagnostic.CA1829.severity = suggestion
# CA1834: Consider using 'StringBuilder.Append(char)' when applicable
dotnet_diagnostic.CA1834.severity = suggestion
# CA1835: Prefer the 'Memory'-based overloads for 'ReadAsync' and 'WriteAsync'
dotnet_diagnostic.CA1835.severity = suggestion
# CA1837: Use 'Environment.ProcessId'
dotnet_diagnostic.CA1837.severity = suggestion
# CA1838: Avoid 'StringBuilder' parameters for P/Invokes
dotnet_diagnostic.CA1838.severity = suggestion
# CA1841: Prefer Dictionary.Contains methods
dotnet_diagnostic.CA1841.severity = suggestion
# CA1844: Provide memory-based overrides of async methods when subclassing 'Stream'
dotnet_diagnostic.CA1844.severity = suggestion
# CA1845: Use span-based 'string.Concat'
dotnet_diagnostic.CA1845.severity = suggestion
# CA1846: Prefer AsSpan over Substring
dotnet_diagnostic.CA1846.severity = suggestion
# CA2008: Do not create tasks without passing a TaskScheduler
dotnet_diagnostic.CA2008.severity = suggestion
# CA2012: Use ValueTask correctly
dotnet_diagnostic.CA2012.severity = suggestion

# CA2016: Forward the 'CancellationToken' parameter to methods that take one
dotnet_diagnostic.CA2016.severity = suggestion