Fix issues and typos reported by Go Report Card

pkg/internal/builder/builder_api.go

@@ -142,7 +142,7 @@ func (b *Builder) IsError(expected error) *predicate.Predicate {
 // ---------------------------------------------------------------------------
 // From pkg/internal/predicate/impl/ext.go
 
-// Is is an extention point allowing for the definition of a custom
+// Is is an extension point allowing for the definition of a custom
 // predicate function to evaluate a predicate chain
 func (b *Builder) Is(desc string, f predicate.PredicateFunc) *predicate.Predicate {
 	b.p.RegisterPredicate(impl.Is(desc, f))
@@ -153,7 +153,7 @@ func (b *Builder) Is(desc string, f predicate.PredicateFunc) *predicate.Predicat
 	return &b.p
 }
 
-// Eval is an extention point allowing for the definition of custom
+// Eval is an extension point allowing for the definition of custom
 // transformation functions in a predicate chain
 func (b *Builder) Eval(desc string, f predicate.TransformFunc) *Builder {
 	b.p.RegisterTransformation(impl.Eval(desc, f))

pkg/internal/predicate/impl/ext.go

@@ -4,13 +4,13 @@ import (
 	"github.com/maargenton/go-testpredicate/pkg/internal/predicate"
 )
 
-// Is is an extention point allowing for the definition of a custom
+// Is is an extension point allowing for the definition of a custom
 // predicate function to evaluate a predicate chain
 func Is(desc string, f predicate.PredicateFunc) (string, predicate.PredicateFunc) {
 	return desc, f
 }
 
-// Eval is an extention point allowing for the definition of custom
+// Eval is an extension point allowing for the definition of custom
 // transformation functions in a predicate chain
 func Eval(desc string, f predicate.TransformFunc) (string, predicate.TransformFunc) {
 	return desc, f

pkg/prettyprint/token.go

@@ -128,9 +128,8 @@ func nextToken(is string) (t token, os string) {
 				if empty {
 					t = next
 					return
-				} else {
-					ts += "...} " + next.str
 				}
+				ts += "...} " + next.str
 			}
 			t = makeToken(ts)
 			return

pkg/require/require.go

@@ -7,6 +7,7 @@ import (
 	"github.com/maargenton/go-testpredicate/pkg/internal/predicate"
 )
 
+// Context captures an additional context value to be displayed upon failure.
 type Context = predicate.ContextValue
 
 // That captrues the test context and a value for the purpose of building and

pkg/value/field.go

@@ -6,7 +6,7 @@ import (
 )
 
 // Field takes a root value or an array of root values, navigates through the
-// data tree according to a keypath, and returns the targetted values. `keypath`
+// data tree according to a keypath, and returns the targeted values. `keypath`
 // is a dot-separated list of keys, each used as either field name in a struct,
 // a key in a map, or a niladic method name. Any error during key evalation
 // results in a nil value. If a method invocation yields multiple return values,
@@ -21,7 +21,7 @@ import (
 //
 // Because the implementation is using the reflect package and is mostly type
 // agnostic, the resulting arrays are always of type []interface{}, even if the
-// field types are consistent accross values.
+// field types are consistent across values.
 func Field(value interface{}, keypath string) interface{} {
 	var keys = strings.Split(keypath, ".")
 	return field(value, keys)

pkg/verify/verify.go

@@ -7,6 +7,7 @@ import (
 	"github.com/maargenton/go-testpredicate/pkg/internal/predicate"
 )
 
+// Context captures an additional context value to be displayed upon failure.
 type Context = predicate.ContextValue
 
 // That captrues the test context and a value for the purpose of building and