How to use the @angular/language-service/src/types.DiagnosticKind function in @angular/language-service

var report = function (message, span) {
                results.push({
                    kind: types_1.DiagnosticKind.Error,
                    span: span || declaration.declarationSpan, message: message
                });
            };
            try {

var parseResult = parser.tryParseHtml(htmlResult, metadata, directives, pipes, schemas);
                        result = {
                            htmlAst: htmlResult.rootNodes,
                            templateAst: parseResult.templateAst,
                            directive: metadata, directives: directives, pipes: pipes,
                            parseErrors: parseResult.errors, expressionParser: expressionParser, errors: errors
                        };
                    }
                }
            }
            catch (e) {
                var span = template.span;
                if (e.fileName == contextFile) {
                    span = template.query.getSpanAt(e.line, e.column) || span;
                }
                result = { errors: [{ kind: types_1.DiagnosticKind.Error, message: e.message, span: span }] };
            }
            return result || {};
        };
        return LanguageServiceImpl;