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Tool for creating client-side TypeScript code from server-side APIs
Kotlin TypeScript Java
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Latest commit 71aae7e Jan 18, 2020


Apina creates client-side TypeScript code for either for Angular or Fetch API based on server-side APIs. Apina reads Spring Web MVC's @RestController annotated classes and their related Jackson classes and creates code for the data model and for executing HTTP-requests.

Read the manual for details.

Quick start using Gradle

Include something like the following in your web application project:

plugins {
    id "fi.evident.apina" version "0.13.0"

apina {
    // Set the name of the created TypeScript file. Default is 'build/apina/apina.ts'.
    target = new File(project(":frontend").projectDir, 'app/apina-api.ts')
    // Specify types that should not be generated, but are implemented manually
    // and should be imported to the generated code. Keys are module paths, values 
    // are list of types imported from the module.
    imports = [
      './my-time-module': ['Instant', 'LocalDate'],
      './other-module': ['Foo', 'Bar']
    // How Java enums are translated to TypeScript enums? (Default mode is 'default'.)
    //  - 'default'      => enum MyEnum { FOO = "FOO", BAR = "BAR", BAZ = "BAZ" }
    //  - 'int_enum'     => enum MyEnum { FOO, BAR, BAZ }
    //  - 'string_union' => type MyEnum = "FOO" | "BAR" | "BAZ"
    enumMode = 'default' 
    // Which controllers to include when generating API? Defaults to everything.
    endpoints = [/my\.package\.foo\..+/]
    // If generated URLs would start with given prefix, removes it. Useful when configuring Apina
    // to work behind reverse proxies. Defaults to empty string (URL is not modified).
    removedUrlPrefix = "/foo"
    // Code generation target (Default is 'angular')
    // - 'angular' => Generate Angular module that uses Angular's HttpClient 
    // - 'es6' => Generate code that uses Fetch API and has no dependencies apart from ES6
    platform = 'angular' 

// Tell the frontend to run apina before setup 
// (the 'setup' task will probably be different for you)
tasks.findByPath(":frontend:setup").dependsOn apina

Using generated code

First make your own module dependent on Apina:

import { ApinaModule } from 'apina';

    imports: [ApinaModule],
    providers: [MyService]
class MyModule { }

Then just inject the generated endpoint and use it:

import { DocumentsEndpoint } from 'apina';

class MyService {
    constructor(private readonly documentsEndpoint: DocumentsEndpoint) { }
    load() {
        this.documentsEndpoint.findDocument(42).forEach(doc => this.document = doc);


  • apina-core main apina code
  • apina-cli command line interface for running conversion
  • apina-gradle plugin for Gradle
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