Use Prism in Sorbet calls (if enabled)

[amomchilov]

Motivation

We should use the Prism mode in repos that have it enabled in Sorbet (with --parse=prism in their sorbet/config),

Implementation

Added a simple littleSorbetConfig class which parses the config file, and exposes nicer APIs for reading its various values.

What's the right place to put this? Perhaps in Spoom?

Performance

Shaves off ~1.5 seconds (5%) on the Shopify core monolith.

$ hyperfine --warmup 5 --runs 20 \
  -n "legacy" '~/sorbet-master --no-config --cache-dir= --parser=original --print=symbol-table-json --quiet --stop-after=namer .' \
  -n "prism"  '~/sorbet-master --no-config --cache-dir= --parser=prism    --print=symbol-table-json --quiet --stop-after=namer .'

Benchmark 1: "legacy, no cache"
  Time (mean ± σ):     28.100 s ±  0.795 s    [User: 64.862 s, System: 18.303 s]
  Range (min … max):   27.020 s … 29.405 s    20 runs

Benchmark 2: "prism, no cache"
  Time (mean ± σ):     26.880 s ±  0.494 s    [User: 44.113 s, System: 18.467 s]
  Range (min … max):   25.809 s … 27.619 s    20 runs

Summary
  "prism" ran
    1.05 ± 0.04 times faster than "legacy"

Tests

Added.

[amomchilov]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• Use RBS in Sorbet calls (if enabled) #2569
• Use Sorbet cache (if enabled) #2568
• Use Prism in Sorbet calls (if enabled) #2567 👈 (View in Graphite)
• Extract sorbet_syntax_check! #2572
• main

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[Morriar]

How do we get bool?

[amomchilov]

Ah that's up-stack in https://app.graphite.com/github/pr/Shopify/tapioca/2569

I moved it.

[amomchilov]

Oh wow, Claude just spit this out so easily, didn't even realize this already exists: https://github.com/Shopify/spoom/blob/main/lib/spoom/sorbet/config.rb