Autocomplete is slow when typing module name on WebStorm

[pavanputhra]

Let's say there is a module defined as bellow.

defmodule Example.Level.Writer do
  def some_func do
    "Hello World"
  end
end

What doesn't works

1. When I start typing Exam autocomplete does not give a suggestion.
2. When I type Example. autocomplete does not suggest next module name i.e. Level

What works

1. When I typeExample.Level.Write. it gives autocomplete suggestion for function some_func

[pavanputhra]

Looks like autocomplete is working, but I have to wait for more than 25 seconds to get the suggestion. This wait time is only when I type the module name for the first time. After this wait time autocomplete works quickly.

[IvanShpotenko]

Same behavior here, IntelliJ Idea Ultimate 2020.1.2, plugin v.11.7.0

[KronicDeth]

@pavanputhra the first time thing is probably because it is building up the cache. The cache is built lazily.

[markomitranic]

@KronicDeth wow, you are right actually. I always thought that autocomplete simply doesn't work, or that i set up something the wrong way. But after testing it out in my IntelliJ Ultimate, i can confirm that:

1. Typing En (for Enum) does not show autocomplete at all.
2. Typing En and waiting for approx 10sec (2020 MBP16) will show up the autocomplete screen.
3. After it builds the cache in point 2, it works for all other autocomplete targets.
4. After IDE restart, you have to do it all over again.
5. It also seems to "forget" the cache after i afk for a couple of minutes.

Typing anything before the cache builds, seems to trigger it all over again, so i was working for MONTHS on my projects and i have never seen the autocomplete dialog, simply because i had no idea that i have to perform this ritual.

This is extremely useful information, perhaps it should be shown on a prominent spot in the Readme's installation section. At least until it is resolved, one day.