TypeScript Client


The TypeScript client can be found in the FlexSearch.Clients.*.zip package in the clients/ts folder.

The client also comes with a definition file called api.d.ts to give you intellisense.

The TypeScript APIs are grouped by swagger tags, just like the C# client is. You therefore have an AnalyzerApi, ServerApi, SearchApi and so on.

Initializing the APIs

Initializing an API is as easy as providing it a reference to Angular’s ng.IHttpService service ($http). This would use the base path of http://localhost:9800 by default.

let api = new API.Client.AnalyzerApi($http);

There are also several other optional parameters that you can pass to the api constructor:

  • $httpParamSerializer - Angular’s params serializer

  • basePath - the base path to use in the requests. E.g. http://localhost:9800

  • bs, q and errorHandler -
    These 3 params need to be specified in a group. They were created specifically for Angular apps that use FlexSearch’s base template (Main). They are used in conjuction with the API methods that have a name ending in *Handled (e.g. getAnalyzerHandled).

    Whenever a *Handled API method is called, if it returns an error (i.e. has the Error property populated) then an Angular Material $mdBottomSheet will be displayed with the error details. This makes for very easy error handling.

    The 3 parameters mean the following:

    • bs is the reference to the $mdBottomSheet that will be displayed
    • q is the reference to Angular’s $q service that is used for rejecting a promise
    • errorHandler is the reference to FlexSearch’s error handling mechanism. In order to gain access FlexSearch’s instance of this function, you just need to make sure you reference srcjs/src/common/partials/error.ts.


Initializing an instance of a FlexSearch TypeScript client as a service in an Angular app, that displays the errors using FlexSearch’s framework can be done in the following way:

/// <reference path="../../common/partials/main.controller.ts" />
/// <reference path="../../common/references/references.d.ts" />

angular.module('myModule', ['ngMaterial'])
    .service('indicesApi', ["$http", "$mdBottomSheet", "$q",
        function($http, $mdBottomSheet, $q) {
            return new API.Client.IndicesApi($http, null, null, $mdBottomSheet, $q, errorHandler);

Accessing the API methods

Each API method (web service) has an overload with the Handled suffix. The Handled methods handle errorred calls automatically using FlexSearch’s framework. This only works if you’ve initialized the API with the error handling parameters.

For example, you will have the following methods in the AnalyzerApi:

  • getAnalyzer
  • getAnalyzerHandled
  • deleteAnalyzer
  • deleteAnalyzerHandled

The outcome of the Handled methods is that if an API method call returns an error, then a window will pop up from the bottom of the screen showing the error details. The method call will still return an error promise and you can further handle it if you want.

You can just as well call the normal methods (without Handled). The return object of the method will be the same. The only difference is that the error details won’t be displayed on the screen.


Let’s try to get all the Analyzers registered in FlexSearch and submit an analysis request against the first of them.

We assume we have an already instantiated analyzerApi with the error handling arguments populated.

/// <reference path="../../common/references/references.d.ts" />

    .then(response => response.data.data)
    .then(analyzers => {
        let analyzerName = analyzers[0].analyzerName;
        let request : API.Client.AnalysisRequest = {
            text : 'some text to test',
            analyzerName : analyzerName
        return analyzerApi.analyzeText(request, analyzerName);
    .then(response => response.data.data)
    .then(analysisResult => /* Do whatever with the result of the analysis */ ());

Complex example

In order to see a complex example have a look at the FlexSearch Dashboard app.

In the index.ts file you will see how the indices, server and documents APIs are initialized in the error handling mode.

In the cluser.ts file you will see how we call different methods from the API, how we use the results in a strongly typed manner and how we handle the erorrs in order to produce a series of stats about the FlexSearch server.