graphql

var UUID = graphql.NewScalar(graphql.ScalarConfig{
	Name:        "UUID",
	Description: "The UUID scalar to check string is UUID format",
	Serialize:   coerceUUID,
	ParseValue:  coerceUUID,
	ParseLiteral: func(valueAST ast.Value) interface{} {
		switch valueAST := valueAST.(type) {
		case *ast.StringValue:
			if uuid, err := uuid.FromString(valueAST.Value); err == nil {
				return uuid.String()
			}
		}
		return nil
	},
})