[twic]

In some long functions (really only very long app-setup functions), i break up related bits into blocks:

  {
    thing_1_a
    thing_1_b
    
    thing_1_c
  }
  
  {
    thing_2_a
    thing_2_b
  }

Blocks are are a language feature in a few languages, but are barely ever used, so it is rather weird to write and read at first.

[danlugo92]

Note to onlookers: blocks can soemtimes act weird in javascript. I loved using them but alas.

[qayxc]

Not just in Javascript. Since blocks define a scope, visibility and unexpected lifetime issues may occur in other curly-braces languages like C and C++ just as well.

Using blocks like that is something you should be very careful about - might have some surprising effects especially for novice programmers.

[twic]

The blocks here act exactly the same as any other blocks, like the ones you write for loops and ifs etc. So i wouldn't exactly call the consequences "unexpected".

[danlugo92]

I can't recall right now but I remember having errors that would not happen inside a normal for loop block. And I was using let/const not var.