chore: clean up and sort golangci-lint configuration

Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>

Author: mmorel-35

.golangci.yml

@@ -1,4 +1,23 @@
-version: "2"
+formatters:
+  enable:
+    - gofmt
+    - gofumpt
+    - goimports
+
+  exclusions:
+    generated: strict
+
+    paths:
+      - ^.*\.(pb|y)\.go$
+
+  settings:
+    gofumpt:
+      extra-rules: true
+
+    goimports:
+      local-prefixes:
+        - github.com/prometheus/client_golang
+
 issues:
   max-same-issues: 0
 
@@ -16,25 +35,29 @@ linters:
     - unconvert
     - usestdlibvars
     - wastedassign
+
   exclusions:
-      generated: lax
+      generated: strict
+
+      paths:
+        - ^.*\.(pb|y)\.go$
+
       presets:
         - comments
         - common-false-positives
         - legacy
         - std-error-handling
+
       rules:
         - linters:
             - errcheck
             - govet
             - structcheck
             - nolintlint
           path: _test.go
-      paths:
-        - ^.*\.(pb|y)\.go$
-        - third_party$
-        - builtin$
-        - examples$
+      
+      warn-unused: true
+
   settings:
     depguard:
       rules:
@@ -46,12 +69,14 @@ linters:
               desc: Use github.com/go-kit/log instead of github.com/go-kit/kit/log
             - pkg: io/ioutil
               desc: Use corresponding 'os' or 'io' functions instead.
+
     errcheck:
       exclude-functions:
         # The following 2 methods always return nil as the error
         - (*github.com/cespare/xxhash/v2.Digest).Write
         - (*github.com/cespare/xxhash/v2.Digest).WriteString
         - (*bufio.Writer).WriteRune
+
     perfsprint:
       # Optimizes even if it requires an int or uint type cast.
       int-conversion: true
@@ -63,28 +88,11 @@ linters:
       sprintf1: true
       # Optimizes into strings concatenation.
       strconcat: true
+
     revive:
       rules:
-
         - name: unused-parameter
           severity: warning
           disabled: true
 
-formatters:
-  enable:
-    - gofmt
-    - gofumpt
-    - goimports
-  settings:
-    gofumpt:
-      extra-rules: true
-    goimports:
-      local-prefixes:
-        - github.com/prometheus/client_golang
-  exclusions:
-    generated: lax
-    paths:
-      - ^.*\.(pb|y)\.go$
-      - third_party$
-      - builtin$
-      - examples$
+version: "2"