How to install and use Go code checking tool golangci-lint

brew install golangci-lint
brew upgrade golangci-lint

# binary will be $(go env GOPATH)/bin/golangci-lint
curl -sSfL /Goci/golangci-lint/master/ | sh -s -- -b $(go env GOPATH)/bin v1.42.1

golangci-lint --version

golangci-lint run

golangci-lint run ./...

golangci-lint run dir1 dir2/... dir3/

golangci-lint help linters

"":"golangci-lint",
"": [
  "--fast"

.
.
.
.

linters:
  disable-all: true
  enable:
    - megacheck
    - govet
  enable-all: true
  disable:
    - maligned
    - prealloc
  presets:
    - bugs
    - unused
  fast: false

# This file contains all available configuration options
# with their default values.
 
# options for analysis running
run:
  # default concurrency is a available CPU number
  concurrency: 4
 
  # timeout for analysis, . 30s, 5m, default is 1m
  timeout: 1m
 
  # exit code when at least one issue was found, default is 1
  issues-exit-code: 1
 
  # include test files or not, default is true
  tests: true
 
  # list of build tags, all linters use it. Default is empty list.
  build-tags:
    - mytag
 
  # which dirs to skip: issues from them won't be reported;
  # can use regexp here: generated.*, regexp is applied on full path;
  # default value is empty list, but default dirs are skipped independently
  # from this option's value (see skip-dirs-use-default).
  # "/" will be replaced by current OS file path separator to properly work
  # on Windows.
  skip-dirs:
    - src/external_libs
    - autogenerated_by_my_lib
 
  # default is true. Enables skipping of directories:
  #   vendor$, third_party$, testdata$, examples$, Godeps$, builtin$
  skip-dirs-use-default: true
 
  # which files to skip: they will be analyzed, but issues from them
  # won't be reported. Default value is empty list, but there is
  # no need to include all autogenerated files, we confidently recognize
  # autogenerated files. If it's not please let us know.
  # "/" will be replaced by current OS file path separator to properly work
  # on Windows.
  skip-files:
    - ".*\\.my\\.go$"
    - lib/
 
  # by default isn't set. If set we pass it to "go list -mod={option}". From "go help modules":
  # If invoked with -mod=readonly, the go command is disallowed from the implicit
  # automatic updating of  described above. Instead, it fails when any changes
  # to  are needed. This setting is most useful to check that  does
  # not need updates, such as in a continuous integration and testing system.
  # If invoked with -mod=vendor, the go command assumes that the vendor
  # directory holds the correct copies of dependencies and ignores
  # the dependency descriptions in .
  modules-download-mode: readonly|vendor|mod
 
  # Allow multiple parallel golangci-lint instances running.
  # If false (default) - golangci-lint acquires file lock on start.
  allow-parallel-runners: false
 
 
# output configuration options
output:
  # colored-line-number|line-number|json|tab|checkstyle|code-climate|junit-xml|github-actions
  # default is "colored-line-number"
  format: colored-line-number
 
  # print lines of code with issue, default is true
  print-issued-lines: true
 
  # print linter name in the end of issue text, default is true
  print-linter-name: true
 
  # make issues output unique by line, default is true
  uniq-by-line: true
 
  # add a prefix to the output file references; default is no prefix
  path-prefix: ""
 
  # sorts results by: filepath, line and column
  sort-results: false
 
 
# all available settings of specific linters
linters-settings:
 
  cyclop:
    # the maximal code complexity to report
    max-complexity: 10
    # the maximal average package complexity. If it's higher than 0.0 (float) the check is enabled (default 0.0)
    package-average: 0.0
    # should ignore tests (default false)
    skip-tests: false
 
  dogsled:
    # checks assignments with too many blank identifiers; default is 2
    max-blank-identifiers: 2
 
  dupl:
    # tokens count to trigger issue, 150 by default
    threshold: 100
 
  errcheck:
    # report about not checking of errors in type assertions: `a := b.(MyStruct)`;
    # default is false: such cases aren't reported by default.
    check-type-assertions: false
 
    # report about assignment of errors to blank identifier: `num, _ := (numStr)`;
    # default is false: such cases aren't reported by default.
    check-blank: false
 
    # [deprecated] comma-separated list of pairs of the form pkg:regex
    # the regex is used to ignore names within pkg. (default "fmt:.*").
    # see /kisielk/errcheck#the-deprecated-method for details
    ignore: fmt:.*,io/ioutil:^Read.*
 
    # [deprecated] use exclude-functions instead.
    # path to a file containing a list of functions to exclude from checking
    # see /kisielk/errcheck#excluding-functions for details
    exclude: /path/to/
 
    # list of functions to exclude from checking, where each entry is a single function to exclude.
    # see /kisielk/errcheck#excluding-functions for details
    exclude-functions:
      - io/
      - (*)
      - ()
 
  errorlint:
    # Check whether  uses the %w verb for formatting errors. See the readme for caveats
    errorf: true
    # Check for plain type assertions and type switches
    asserts: true
    # Check for plain error comparisons
    comparison: true
 
  exhaustive:
    # check switch statements in generated files also
    check-generated: false
    # indicates that switch statements are to be considered exhaustive if a
    # 'default' case is present, even if all enum members aren't listed in the
    # switch
    default-signifies-exhaustive: false
 
  exhaustivestruct:
    # Struct Patterns is list of expressions to match struct packages and names
    # The struct packages have the form /
    # The matching patterns can use matching syntax from /path#Match
    # If this list is empty, all structs are tested.
    struct-patterns:
      - '*.Test'
      - '/'
 
  forbidigo:
    # Forbid the following identifiers (identifiers are written using regexp):
    forbid:
      - ^print.*$
      - 'fmt\.Print.*'
    # Exclude godoc examples from forbidigo checks.  Default is true.
    exclude_godoc_examples: false
 
  funlen:
    lines: 60
    statements: 40
 
  gci:
    # put imports beginning with prefix after 3rd-party packages;
    # only support one prefix
    # if not set, use -prefixes
    local-prefixes: /org/project
 
  gocognit:
    # minimal code complexity to report, 30 by default (but we recommend 10-20)
    min-complexity: 10
 
  goconst:
    # minimal length of string constant, 3 by default
    min-len: 3
    # minimum occurrences of constant string count to trigger issue, 3 by default
    min-occurrences: 3
    # ignore test files, false by default
    ignore-tests: false
    # look for existing constants matching the values, true by default
    match-constant: true
    # search also for duplicated numbers, false by default
    numbers: false
    # minimum value, only works with , 3 by default
    min: 3
    # maximum value, only works with , 3 by default
    max: 3
    # ignore when constant is not used as function argument, true by default
    ignore-calls: true
 
  gocritic:
    # Which checks should be enabled; can't be combined with 'disabled-checks';
    # See /overview#checks-overview
    # To check which checks are enabled run `GL_DEBUG=gocritic golangci-lint run`
    # By default list of stable checks is used.
    enabled-checks:
      - rangeValCopy
 
    # Which checks should be disabled; can't be combined with 'enabled-checks'; default is empty
    disabled-checks:
      - regexpMust
 
    # Enable multiple checks by tags, run `GL_DEBUG=gocritic golangci-lint run` to see all tags and checks.
    # Empty list by default. See /go-critic/go-critic#usage -> section "Tags".
    enabled-tags:
      - performance
    disabled-tags:
      - experimental
 
    # Settings passed to gocritic.
    # The settings key is the name of a supported gocritic checker.
    # The list of supported checkers can be find in /overview.
    settings:
      captLocal: # must be valid enabled check name
        # whether to restrict checker to params only (default true)
        paramsOnly: true
      elseif:
        # whether to skip balanced if-else pairs (default true)
        skipBalanced: true
      hugeParam:
        # size in bytes that makes the warning trigger (default 80)
        sizeThreshold: 80
      nestingReduce:
        # min number of statements inside a branch to trigger a warning (default 5)
        bodyWidth: 5
      rangeExprCopy:
        # size in bytes that makes the warning trigger (default 512)
        sizeThreshold: 512
        # whether to check test functions (default true)
        skipTestFuncs: true
      rangeValCopy:
        # size in bytes that makes the warning trigger (default 128)
        sizeThreshold: 32
        # whether to check test functions (default true)
        skipTestFuncs: true
      ruleguard:
        # path to a gorules file for the ruleguard checker
        rules: ''
      truncateCmp:
        # whether to skip int/uint/uintptr types (default true)
        skipArchDependent: true
      underef:
        # whether to skip (*x).method() calls where x is a pointer receiver (default true)
        skipRecvDeref: true
      unnamedResult:
        # whether to check exported functions
        checkExported: true
 
  gocyclo:
    # minimal code complexity to report, 30 by default (but we recommend 10-20)
    min-complexity: 10
 
  godot:
    # comments to be checked: `declarations`, `toplevel`, or `all`
    scope: declarations
    # list of regexps for excluding particular comment lines from check
    exclude:
      # example: exclude comments which contain numbers
      # - '[0-9]+'
    # check that each sentence starts with a capital letter
    capital: false
 
  godox:
    # report any comments starting with keywords, this is useful for TODO or FIXME comments that
    # might be left in the code accidentally and should be resolved before merging
    keywords: # default keywords are TODO, BUG, and FIXME, these can be overwritten by this setting
      - NOTE
      - OPTIMIZE # marks code that should be optimized before merging
      - HACK # marks hack-arounds that should be removed before merging
 
  gofmt:
    # simplify code: gofmt with `-s` option, true by default
    simplify: true
 
  gofumpt:
    # Select the Go version to target. The default is `1.15`.
    lang-version: "1.15"
 
    # Choose whether or not to use the extra rules that are disabled
    # by default
    extra-rules: false
 
  goheader:
    values:
      const:
        # define here const type values in format k:v, for example:
        # COMPANY: MY COMPANY
      regexp:
        # define here regexp type values, for example
        # AUTHOR: .*@mycompany\.com
    template: # |-
      # put here copyright header template for source code files, for example:
      # Note: {{ YEAR }} is a builtin value that returns the year relative to the current machine time.
      #
      # {{ AUTHOR }} {{ COMPANY }} {{ YEAR }}
      # SPDX-License-Identifier: Apache-2.0
 
      # Licensed under the Apache License, Version 2.0 (the "License");
      # you may not use this file except in compliance with the License.
      # You may obtain a copy of the License at:
 
      #   /licenses/LICENSE-2.0
 
      # Unless required by applicable law or agreed to in writing, software
      # distributed under the License is distributed on an "AS IS" BASIS,
      # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      # See the License for the specific language governing permissions and
      # limitations under the License.
    template-path:
      # also as alternative of directive 'template' you may put the path to file with the template source
 
  goimports:
    # put imports beginning with prefix after 3rd-party packages;
    # it's a comma-separated list of prefixes
    local-prefixes: /org/project
 
  golint:
    # minimal confidence for issues, default is 0.8
    min-confidence: 0.8
 
  gomnd:
    settings:
      mnd:
        # the list of enabled checks, see /tommy-muehle/go-mnd/#checks for description.
        checks: argument,case,condition,operation,return,assign
        # ignored-numbers: 1000
        # ignored-files: magic_.*.go
        # ignored-functions: math.*
 
  gomoddirectives:
    # Allow local `replace` directives. Default is false.
    replace-local: false
    # List of allowed `replace` directives. Default is empty.
    replace-allow-list:
      - /gocheck
    # Allow to not explain why the version has been retracted in the `retract` directives. Default is false.
    retract-allow-no-explanation: false
    # Forbid the use of the `exclude` directives. Default is false.
    exclude-forbidden: false
 
  gomodguard:
    allowed:
      modules:                                                        # List of allowed modules
        # - /yaml.v2
      domains:                                                        # List of allowed module domains
        # - 
    blocked:
      modules:                                                        # List of blocked modules
        # - /uudashr/go-module:                             # Blocked module
        #     recommendations:                                        # Recommended modules that should be used instead (Optional)
        #       - /x/mod
        #     reason: "`mod` is the official  parser library."  # Reason why the recommended module should be used (Optional)
      versions:                                                       # List of blocked module version constraints
        # - /mitchellh/go-homedir:                          # Blocked module with version constraint
        #     version: "< 1.1.0"                                      # Version constraint, see /Masterminds/semver#basic-comparisons
        #     reason: "testing if blocked version constraint works."  # Reason why the version constraint exists. (Optional)
      local_replace_directives: false                                 # Set to true to raise lint issues for packages that are loaded from a local path via replace directive
 
  gosec:
    # To select a subset of rules to run.
    # Available rules: /securego/gosec#available-rules
    includes:
      - G401
      - G306
      - G101
    # To specify a set of rules to explicitly exclude.
    # Available rules: /securego/gosec#available-rules
    excludes:
      - G204
    # Exclude generated files
    exclude-generated: true
    # To specify the configuration of rules.
    # The configuration of rules is not fully documented by gosec:
    # /securego/gosec#configuration
    # /securego/gosec/blob/569328eade2ccbad4ce2d0f21ee158ab5356a5cf/rules/#L60-L102
    config:
      G306: "0600"
      G101:
        pattern: "(?i)example"
        ignore_entropy: false
        entropy_threshold: "80.0"
        per_char_threshold: "3.0"
        truncate: "32"
 
  gosimple:
    # Select the Go version to target. The default is '1.13'.
    go: "1.15"
    # /docs/options#checks
    checks: [ "all" ]
 
  govet:
    # report about shadowed variables
    check-shadowing: true
 
    # settings per analyzer
    settings:
      printf: # analyzer name, run `go tool vet help` to see all analyzers
        funcs: # run `go tool vet help printf` to see available settings for `printf` analyzer
          - (/golangci/golangci-lint/pkg/).Infof
          - (/golangci/golangci-lint/pkg/).Warnf
          - (/golangci/golangci-lint/pkg/).Errorf
          - (/golangci/golangci-lint/pkg/).Fatalf
 
    # enable or disable analyzers by name
    # run `go tool vet help` to see all analyzers
    enable:
      - atomicalign
    enable-all: false
    disable:
      - shadow
    disable-all: false
 
  depguard:
    list-type: blacklist
    include-go-root: false
    packages:
      - /sirupsen/logrus
    packages-with-error-message:
      # specify an error message to output when a blacklisted package is used
      - /sirupsen/logrus: "logging is allowed only by "
 
  ifshort:
    # Maximum length of variable declaration measured in number of lines, after which linter won't suggest using short syntax.
    # Has higher priority than max-decl-chars.
    max-decl-lines: 1
    # Maximum length of variable declaration measured in number of characters, after which linter won't suggest using short syntax.
    max-decl-chars: 30
 
  importas:
    # if set to `true`, force to use alias.
    no-unaliased: true
    # List of aliases
    alias:
      # using `servingv1` alias for `/serving/pkg/apis/serving/v1` package
      - pkg: /serving/pkg/apis/serving/v1
        alias: servingv1
      # using `autoscalingv1alpha1` alias for `/serving/pkg/apis/autoscaling/v1alpha1` package
      - pkg: /serving/pkg/apis/autoscaling/v1alpha1
        alias: autoscalingv1alpha1
      # You can specify the package path by regular expression,
      # and alias by regular expression expansion syntax like below.
      # see /julz/importas#use-regular-expression for details
      - pkg: /serving/pkg/apis/(\w+)/(v[\w\d]+)
        alias: $1$2
 
  ireturn:
    # ireturn allows using `allow` and `reject` settings at the same time.
    # Both settings are lists of the keywords and regular expressions matched to interface or package names.
    # keywords:
    # - `empty` for `interface{}`
    # - `error` for errors
    # - `stdlib` for standard library
    # - `anon` for anonymous interfaces
 
    # By default, it allows using errors, empty interfaces, anonymous interfaces,
    # and interfaces provided by the standard library.
    allow:
    - anon
    - error
    - empty
    - stdlib
    # You can specify idiomatic endings for interface
    - (or|er)$
 
    # Reject patterns
    reject:
    - \/user\/package\/v4\.Type
 
  lll:
    # max line length, lines longer will be reported. Default is 120.
    # '\t' is counted as 1 character by default, and can be changed with the tab-width option
    line-length: 120
    # tab width in spaces. Default to 1.
    tab-width: 1
 
  makezero:
    # Allow only slices initialized with a length of zero. Default is false.
    always: false
 
  maligned:
    # print struct with more effective memory layout or not, false by default
    suggest-new: true
 
  misspell:
    # Correct spellings using locale preferences for US or UK.
    # Default is to use a neutral variety of English.
    # Setting locale to US will correct the British spelling of 'colour' to 'color'.
    locale: US
    ignore-words:
      - someword
 
  nakedret:
    # make an issue if func has more lines of code than this setting and it has naked returns; default is 30
    max-func-lines: 30
 
  nestif:
    # minimal complexity of if statements to report, 5 by default
    min-complexity: 4
 
  nilnil:
    # By default, nilnil checks all returned types below.
    checked-types:
      - ptr
      - func
      - iface
      - map
      - chan
 
  nlreturn:
    # size of the block (including return statement that is still "OK")
    # so no return split required.
    block-size: 1
 
  nolintlint:
    # Enable to ensure that nolint directives are all used. Default is true.
    allow-unused: false
    # Disable to ensure that nolint directives don't have a leading space. Default is true.
    allow-leading-space: true
    # Exclude following linters from requiring an explanation.  Default is [].
    allow-no-explanation: [ ]
    # Enable to require an explanation of nonzero length after each nolint directive. Default is false.
    require-explanation: true
    # Enable to require nolint directives to mention the specific linter being suppressed. Default is false.
    require-specific: true
 
  prealloc:
    # XXX: we don't recommend using this linter before doing performance profiling.
    # For most programs usage of prealloc will be a premature optimization.
 
    # Report preallocation suggestions only on simple loops that have no returns/breaks/continues/gotos in them.
    # True by default.
    simple: true
    range-loops: true # Report preallocation suggestions on range loops, true by default
    for-loops: false # Report preallocation suggestions on for loops, false by default
 
  promlinter:
    # Promlinter cannot infer all metrics name in static analysis.
    # Enable strict mode will also include the errors caused by failing to parse the args.
    strict: false
    # Please refer to /yeya24/promlinter#usage for detailed usage.
    disabled-linters:
    #  - "Help"
    #  - "MetricUnits"
    #  - "Counter"
    #  - "HistogramSummaryReserved"
    #  - "MetricTypeInName"
    #  - "ReservedChars"
    #  - "CamelCase"
    #  - "lintUnitAbbreviations"
 
  predeclared:
    # comma-separated list of predeclared identifiers to not report on
    ignore: ""
    # include method names and field names (., qualified names) in checks
    q: false
 
  rowserrcheck:
    packages:
      - /jmoiron/sqlx
 
  revive:
    # see /mgechev/revive#available-rules for details.
    ignore-generated-header: true
    severity: warning
    rules:
      - name: indent-error-flow
        severity: warning
      - name: add-constant
        severity: warning
        arguments:
          - maxLitCount: "3"
            allowStrs: '""'
            allowInts: "0,1,2"
            allowFloats: "0.0,0.,1.0,1.,2.0,2."
 
  staticcheck:
    # Select the Go version to target. The default is '1.13'.
    go: "1.15"
    # /docs/options#checks
    checks: [ "all" ]
 
  stylecheck:
    # Select the Go version to target. The default is '1.13'.
    go: "1.15"
    # /docs/options#checks
    checks: [ "all", "-ST1000", "-ST1003", "-ST1016", "-ST1020", "-ST1021", "-ST1022" ]
    # /docs/options#dot_import_whitelist
    dot-import-whitelist:
      - fmt
    # /docs/options#initialisms
    initialisms: [ "ACL", "API", "ASCII", "CPU", "CSS", "DNS", "EOF", "GUID", "HTML", "HTTP", "HTTPS", "ID", "IP", "JSON", "QPS", "RAM", "RPC", "SLA", "SMTP", "SQL", "SSH", "TCP", "TLS", "TTL", "UDP", "UI", "GID", "UID", "UUID", "URI", "URL", "UTF8", "VM", "XML", "XMPP", "XSRF", "XSS" ]
    # /docs/options#http_status_code_whitelist
    http-status-code-whitelist: [ "200", "400", "404", "500" ]
 
  tagliatelle:
    # check the struck tag name case
    case:
      # use the struct field name to check the name of the struct tag
      use-field-name: true
      rules:
        # any struct tag type can be used.
        # support string case: `camel`, `pascal`, `kebab`, `snake`, `goCamel`, `goPascal`, `goKebab`, `goSnake`, `upper`, `lower`
        json: camel
        yaml: camel
        xml: camel
        bson: camel
        avro: snake
        mapstructure: kebab
 
  testpackage:
    # regexp pattern to skip files
    skip-regexp: (export|internal)_test\.go
 
  thelper:
    # The following configurations enable all checks. It can be omitted because all checks are enabled by default.
    # You can enable only required checks deleting unnecessary checks.
    test:
      first: true
      name: true
      begin: true
    benchmark:
      first: true
      name: true
      begin: true
    tb:
      first: true
      name: true
      begin: true
 
  tenv:
    # The option `all` will run against whole test files (`_test.go`) regardless of method/function signatures.
    # By default, only methods that take `*`, `*`, and `` as arguments are checked.
    all: false
 
  unparam:
    # Inspect exported functions, default is false. Set to true if no external program/library imports your code.
    # XXX: if you enable this setting, unparam will report a lot of false-positives in text editors:
    # if it's called for subdir of a project it can't find external interfaces. All text editor integrations
    # with golangci-lint call it on a directory with the changed file.
    check-exported: false
 
  unused:
    # Select the Go version to target. The default is '1.13'.
    go: "1.15"
 
  whitespace:
    multi-if: false   # Enforces newlines (or comments) after every multi-line if statement
    multi-func: false # Enforces newlines (or comments) after every multi-line function signature
 
  wrapcheck:
    # An array of strings that specify substrings of signatures to ignore.
    # If this set, it will override the default set of ignored signatures.
    # See /tomarrell/wrapcheck#configuration for more information.
    ignoreSigs:
      - .Errorf(
      - (
      - (
      - .Wrap(
      - .Wrapf(
      - .WithMessage(
      - .WithMessagef(
      - .WithStack(
    ignorePackageGlobs:
        - encoding/*
        - /pkg/*
 
  wsl:
    # See /bombsimon/wsl/blob/master/doc/ for
    # documentation of available settings. These are the defaults for
    # `golangci-lint`.
    allow-assign-and-anything: false
    allow-assign-and-call: true
    allow-cuddle-declarations: false
    allow-multiline-assign: true
    allow-separated-leading-comment: false
    allow-trailing-comment: false
    force-case-trailing-whitespace: 0
    force-err-cuddling: false
    force-short-decl-cuddling: false
    strict-append: true
 
  # The custom section can be used to define linter plugins to be loaded at runtime.
  # See README doc for more info.
  custom:
    # Each custom linter should have a unique name.
     example:
      # The path to the plugin *.so. Can be absolute or local. Required for each custom linter
      path: /path/to/
      # The description of the linter. Optional, just for documentation purposes.
      description: This is an example usage of a plugin linter.
      # Intended to point to the repo location of the linter. Optional, just for documentation purposes.
      original-url: /golangci/example-linter
 
linters:
  disable-all: true
  enable:
    - megacheck
    - govet
  enable-all: true
  disable:
    - maligned
    - prealloc
  presets:
    - bugs
    - unused
  fast: false
 
issues:
  # List of regexps of issue texts to exclude, empty list by default.
  # But independently from this option we use default exclude patterns,
  # it can be disabled by `exclude-use-default: false`. To list all
  # excluded by default patterns execute `golangci-lint run --help`
  exclude:
    - abcdef
 
  # Excluding configuration per-path, per-linter, per-text and per-source
  exclude-rules:
    # Exclude some linters from running on tests files.
    - path: _test\.go
      linters:
        - gocyclo
        - errcheck
        - dupl
        - gosec
 
    # Exclude known linters from partially hard-vendored code,
    # which is impossible to exclude via "nolint" comments.
    - path: internal/hmac/
      text: "weak cryptographic primitive"
      linters:
        - gosec
 
    # Exclude some staticcheck messages
    - linters:
        - staticcheck
      text: "SA9003:"
 
    # Exclude lll issues for long lines with go:generate
    - linters:
        - lll
      source: "^//go:generate "
 
  # Independently from option `exclude` we use default exclude patterns,
  # it can be disabled by this option. To list all
  # excluded by default patterns execute `golangci-lint run --help`.
  # Default value for this option is true.
  exclude-use-default: false
 
  # The default value is false. If set to true exclude and exclude-rules
  # regular expressions become case sensitive.
  exclude-case-sensitive: false
 
  # The list of ids of default excludes to include or disable. By default it's empty.
  include:
    - EXC0002 # disable excluding of issues about comments from golint
 
  # Maximum issues count per one linter. Set to 0 to disable. Default is 50.
  max-issues-per-linter: 0
 
  # Maximum count of issues with the same text. Set to 0 to disable. Default is 3.
  max-same-issues: 0
 
  # Show only new issues: if there are unstaged changes or untracked files,
  # only those changes are analyzed, else only changes in HEAD~ are analyzed.
  # It's a super-useful option for integration of golangci-lint into existing
  # large codebase. It's not practical to fix all existing issues at the moment
  # of integration: much better don't allow issues in new code.
  # Default is false.
  new: false
 
  # Show only new issues created after git revision `REV`
  new-from-rev: REV
 
  # Show only new issues created in git patch with set file path.
  new-from-patch: path/to/patch/file
 
  # Fix found issues (if it's supported by the linter)
  fix: true
 
severity:
  # Default value is empty string.
  # Set the default severity for issues. If severity rules are defined and the issues
  # do not match or no severity is provided to the rule this will be the default
  # severity applied. Severities should match the supported severity names of the
  # selected out format.
  # - Code climate: /docs/issues#issue-severity
  # -   Checkstyle: /property_types.html#severity
  # -       Github: /en/actions/reference/workflow-commands-for-github-actions#setting-an-error-message
  default-severity: error
 
  # The default value is false.
  # If set to true severity-rules regular expressions become case sensitive.
  case-sensitive: false
 
  # Default value is empty list.
  # When a list of severity rules are provided, severity information will be added to lint
  # issues. Severity rules have the same filtering capability as exclude rules except you
  # are allowed to specify one matcher per severity rule.
  # Only affects out formats that support setting severity information.
  rules:
    - linters:
      - dupl
      severity: info