Phoenix TS Interface

Allows TS inference for requests and responses from your Phoenix API.

This project is a mix compiler task that generates a TypeScript module containing API request helpers.

Installation

NOTE: still currently in development, no stable release yet.

Getting started

Add the ts_interface compiler to the list of compilers in your project.

def project do
    [app: :ts_interface_test,
    ...
    compilers: [:phoenix, :gettext] ++ Mix.compilers ++ [:ts_interface]
    ...]
end

This compiler should be placed after the elixir compiler, this is important because your router module should be already compiled when this compiler runs

After that, if you run mix compile the file assets/deps/ts/phoenix-ts-interface.ts will be generated.

You can clean up the generated file by running mix clean.

The location and file name can be changed (see Configuration section bellow), keep in mind that if you change it, mix clean will not be able to remove the old file. It's recomended to always run mix clean before you update this config.

Using the javascript helpers

The code generated by this compiler is compatible with AMD, Commonjs and Global builds.

The functions are generated with different names from the ones in the server in order to follow javascript best practices. For example:

user_path(:index)                => userIndex()
user_path(:create)               => userCreate()
user_path(:update, 1)            => userUpdate(1)
user_friends_path(:update, 1, 2) => userFriendsUpdate(1, 2)

If you are using the default phoenix configuration with webpack (or any other commonjs compatible build tool like webpack and browserify) you can use the helpers like this

import routes from "../static/js/phoenix_ts_interface";
routes.userIndex(); // /users
routes.userCreate(); // /users
routes.userUpdate(1); // /users/1
routes.userFriendsUpdate(1, 2); // /users/1/friends/2

You can also import only the routes you need

import { userIndex, userUpdate } from "../static/js/phoenix_ts_interface";
userIndex();
userUpdate(1);

For AMD builds

require(["phoenix_ts_interface"], routes => {
  routes.userIndex();
});

For Global builds

PhoenixTsInterface.userIndex();
// If the name conflicts with anything...
var myBeautifulName = PhoenixTsInterface.noConflict();

Live reload

If you want the javascript module to be generated automatically when your router changes, just add this compiler to the list of reloadable compilers.

# config/dev.exs

config :my_app, MyApp.Endpoint,
  http: [port: 4000],
  ...
  reloadable_compilers: [:gettext, :phoenix, :elixir, :ts_interface]

NOTE: if you are using version >= 1.5 of Phoenix you might need to reload the page once or twice for changes to take effect.

Configuration

Key	Type	Default	Description
output_folder	String	assets/static/js	Sets the folder used to generate files
include	Regex	nil	Will include only routes matching this regex
exclude	Regex	nil	Will include only routes not matching this regex

Configurations should be added to the key :ts_interface in your application.