Migrate codebase to TypeScript, close #323

[Kocal]

Hi :wave:

This PR is a proposal for migrating the codebase to TypeScript. This way:

• working on the "javascript-side" of the bundle will be easier, I think
• types definitions for end-developpers using TypeScript will be synchronized with the codebase

Some things to know:

• I've upgraded to Babel ^7, in order to use the @babel/typescript-preset
• only the js/router.js file has been migrated to TypeScript. But I didn't rewrite the whole file, just adapting it to make TypeScript and tests happy
• tests for types (with tsd) have been added with real genereated data. Thanks to them I was able to fix a lot of minor typings issues
• The TypeScript module FOS does not exist anymore. TBH I was not able to re-introduce this behaviour and didn't spend too much time on this, since the majority of users will just do a import { Routing } from 'vendor/friendsofsymfony/jsrouting-bundle' I guess

WDYT? Thanks!

[Kocal]

Hum, the CI fails and I think it's because the Node.js version is outdated. I was able to reproduce the issue on local with Node 8, but everything works fine with Node 10.:

Given Node.js 8 is unmaintened since a long time ago (https://nodejs.org/en/about/releases/), I think it won't be a problem to setup Node.js 10 on Travis.

[Kocal]

I've fixed some bugs I faced when trying to use my pull request on an existing project, and confirm the following code works (no types errors, and routes are generated correctly):

import Routing, { RouteParams } from '../../../vendor/friendsofsymfony/jsrouting-bundle/Resources';
import routes from '../../_generated/routes.json';

Routing.setRoutingData(routes);

export function generateRoute(name: string, params: RouteParams = {}, absolute = false): string {
  return Routing.generate(name, params, absolute);
}

Friendly ping @tobias-93

[stof]

* The TypeScript module `FOS` does not exist anymore. TBH I was not able to re-introduce this behaviour and didn't spend too much time on this, since the majority of users will just do a `import { Routing } from 'vendor/friendsofsymfony/jsrouting-bundle'` I guess

This makes it a BC break for people loading the router and the routes separately rather than using a webpack (see the first code snippet in the doc at https://symfony.com/doc/current/bundles/FOSJsRoutingBundle/usage.html)

[Kocal]

@tobias-93 The text has been removed and a more generic route (feed_post => eg: /feed/post.xml which deals with defaults and requirements) has been added.

@stof Sorry, maybe I was not clear enough. I was speaking about the TypeScript definition, FOS module does not exist anymore since. But fos.Router.setData is still a globally-accessible function:

[Kocal]

Hi everyone, is there any news on this? Thanks!

[tobias-93]

Hi @Kocal,

Sorry, this bundle has been under my radar for a long time. Please rebase on the newest master and rework the tests for Github Actions, and I will have a new look on merging this.

[Kocal]

Hi @tobias-93, no worries! The PR has been rebased.

I will do the same for #408.

Thanks

[tobias-93]

@Kocal awesome, thanks! I will make a 3.0 release with this new implementation, including support for SF 6 and dropping old PHP versions.

[Kocal]

Perfect! :)