doc: improve comments, pass lint

Also improve the setup of golangci-lint.

1 files changed, 5 insertions, 4 deletions

diff --git a/vm/vm.go b/vm/vm.go
index f981415..18207f7 100644
--- a/vm/vm.go
+++ b/vm/vm.go
@@ -11,10 +11,8 @@ import (
 
 const debug = true
 
-type (
-	Op  int // Op is a VM opcode (bytecode instruction).
-	Pos int // Pos is the source code position of instruction
-)
+// Op is a VM opcode (bytecode instruction).
+type Op int
 
 //go:generate stringer -type=Op
 
@@ -58,6 +56,9 @@ const (
 	Swap                   // --
 )
 
+// Pos is the source code position of instruction.
+type Pos int
+
 // Instruction represents a virtual machine bytecode instruction.
 type Instruction struct {
 	Pos       // position in source