standardize JSON pretty printing

Author: Stephen Gutekanst

cmd/src/api.go

@@ -97,7 +97,7 @@ Examples:
 			result: &result,
 			done: func() error {
 				// Print the formatted JSON.
-				f, err := json.MarshalIndent(result, "", "  ")
+				f, err := marshalIndent(result)
 				if err != nil {
 					return err
 				}
@@ -288,7 +288,7 @@ type graphqlError struct {
 }
 
 func (g *graphqlError) Error() string {
-	j, _ := json.MarshalIndent(g.Errors, "", "  ")
+	j, _ := marshalIndent(g.Errors)
 	return string(j)
 }
 

cmd/src/format.go

@@ -25,3 +25,8 @@ func execTemplate(tmpl *template.Template, data interface{}) error {
 	fmt.Println()
 	return nil
 }
+
+// json.MarshalIndent, but with defaults.
+func marshalIndent(v interface{}) ([]byte, error) {
+	return json.MarshalIndent(v, "", "  ")
+}