How can we improve the debuggability of a TCA App?

[mackoj]

Hi,

Is it time to improve TCA debuggability? In a moderately complex app, it can be hard with only a crash log to know why something has failed in production(#1095) in TCA guts.

One approach could be having hooks in TCA that will allow us to observe, trace and collect more data(and maybe fix some bugs along the way).

The hooks that can help us could be:

• being able to get a custom dump of an action just before performing a send action
• being able to get a custom dump of an action and a snapshot of the State just after performing an action
• when a withViewStore is unblocked to update the view with a snapshot of the State
• eachTime the state change
• when the view decides to update its content with a snapshot of the State and the view name
• a way to extract runtime warning

Most of these hooks could be set on the Store and passed to VIewStore if needed.

What do you think about that? Would someone be interested in having these kinds of tools? What hooks are missing?

Thanks,

[mackoj]

Having theses could help in case of crash if you use something like Crashlytics Firebase to add some context for your crashes(because Apple don't provide API to add context to crashlogs 😠).