Add type constraints for Map and Array fields

.github/workflows/test.yml

@@ -22,7 +22,7 @@ jobs:
     - name: Install Go
       uses: actions/setup-go@v2
       with:
-        go-version: 1.17.x
+        go-version: 1.18.x
 
     - name: Add dependencies
       run: |

fieldapi.go

@@ -100,11 +100,11 @@ func Millis(key string, val int64) Field {
 }
 
 // Array constructs a field containing a key and array value.
-func Array(key string, val interface{}) Field {
+func Array[S ~[]E, E any](key string, val S) Field {
 	return Field{Key: key, Type: ArrayType, Interface: val}
 }
 
 // Map constructs a field containing a key and map value.
-func Map(key string, val interface{}) Field {
+func Map[M ~map[K]V, K comparable, V any](key string, val M) Field {
 	return Field{Key: key, Type: MapType, Interface: val}
 }

go.mod

@@ -1,6 +1,6 @@
 module github.com/mattermost/logr/v2
 
-go 1.17
+go 1.18
 
 require (
 	github.com/francoispqt/gojay v1.2.13