Definitions and scopes performance on checker-ligo
Clone https://github.com/marigold-dev/checker-ligo and open it in VSCode, and in your terminal, try the following:
```
# Typer, scopes
time ligo info get-scope /home/heitor/Work/ligo-repos/checker-ligo/src/checker.mligo --format dev --with-types --no-stdlib > /dev/null
ligo info get-scope --format dev --with-types --no-stdlib > /dev/null 21.86s user 0.19s system 99% cpu 22.088 total
```
As indicated by the snippet above, in my machine, we took almost 22 seconds to fetch definitions and scopes from this file. The problem is mostly aggravated by two things: the presence of the `--with-types` flag, and the lack of the `--defs-only` flag. Below are some more numbers:
```
# No typer, no scopes
time ligo info get-scope /home/heitor/Work/ligo-repos/checker-ligo/src/checker.mligo --format dev --no-stdlib --defs-only > /dev/null
ligo info get-scope --format dev --no-stdlib --defs-only > /dev/null 2.11s user 0.06s system 99% cpu 2.173 total
```
```
# Typer, no scopes
time ligo info get-scope /home/heitor/Work/ligo-repos/checker-ligo/src/checker.mligo --format dev --with-types --no-stdlib --defs-only > /dev/null
ligo info get-scope --format dev --with-types --no-stdlib --defs-only > 14.20s user 0.23s system 99% cpu 14.448 total
```
```
# No typer, scopes
time ligo info get-scope /home/heitor/Work/ligo-repos/checker-ligo/src/checker.mligo --format dev --no-stdlib > /dev/null
ligo info get-scope --format dev --no-stdlib > /dev/null 11.66s user 0.09s system 99% cpu 11.767 total
```
I don't know how much pretty-printing the results influences the benchmarks, but even in VSCode, this delay is still very real. We should investigate what causes this slowdown and fix it.
## Acceptance criteria
* We investigate what causes the slowdown in scopes pass and fix it.
* We investigate what causes the slowdown in types pass and fix it.
issue