`re-frisk` is a state visualization tool written by our very own Andrey (@flexsurfer). With its help you can inspect the current state of app-db, watch event, etc.
To start `re-frisk`, execute the following command:
```bash
$ yarn shadow-cljs run re-frisk-remote.core/start
```
or you can also use make:
```bash
$ make run-re-frisk
```
A server will be started at http://localhost:4567. It might show "not connected" at first. Don't worry and just start using the app. The events and state will populate.
More details about re-frisk are on the [project page](https://github.com/flexsurfer/re-frisk).
## Enabling debug logs
Calls to `log/debug` will not be printed to the console by default. It can be enabled under "Advanced settings" in the app:
Something I find extremely convenient for Android is to use `adb` to tail logs. I don't use macOS so I don't know if the iOS simulator offers a CLI interface with the same capabilities.
Also to inspect logs in a more flexible manner, instead of the strict output from `make run-metro`, I prefer `adb logcat`. Combined with enabling status-mobile logs in debug by default plus filtering the logs to only what I care during development, I find this helps me inspect the app without running re-frisk because with the debug log level I can already see which events are dispatched (one of the features I like the most from re-frisk).
When building/fixing/refactoring components, it can be annoying to set-up the component for instant visual feedback (i.e. finding it in the UI when fixing/refactoring; finding a place for it when building from scratch). Very often if the location of the screen containing your component nested deeply in the app, you might have to do a lot of repeated navigation, nevermind logging in every time the app reloads (even with fast refresh disabled this happens quite often).
To alleviate this discomfort and make the development cycle more *pleasant*, you can use one of the following options (*_both of which involve the ... REPL ༼ つ ╹ ╹ ༽つ, so make sure you have that set-up with your IDE/editor_*)
#### REPL-ing to a screen
This one is straightforward, just evaluate a navigation dispatch form from anywhere:
> TIP: you can run this from an untracked user namespace `(ns user)`, from which you can experiment or interact with the REPL. This is where I usually keep my development navigation forms.
#### REPL-ing a component
This is also straighforward, but there are some small differences. Just like above, we only have to evaluate a dispatch form, as follows:
```cljs
;; example debugging a quo component, although it could be any other component e.g. from the `status-im2` ns.
When evaluated, a full-screen bottom sheet will appear with your component inside. You can make changes to the props or the component internals and re-evaluate the changed forms, after which the component will be re-mounted without running a reload (unless you save the file). Other times it's quicker to just hit save and the component will be reloaded as usual (except for the props you evaluated, which have to be re-evaluated when changed).
> TIP: You can have multiple versions of the component as separate comments to check for the component variations
> TIP: You can leave `comment` blocks at the end of component files (other than quo, since can be previewed in other ways) with usages of components, which other developers can use for visualisation/testing.
