add TypeScript benchmarks.

[igalklebanov]

Hey 👋

Taking the TypeScript performance investigation and regression protection a step further and adding @ark/attest benches.

To demo it, I'm experimenting with QueryCreator.selectFrom improvements.

How to use it:
https://www.edgedb.com/blog/an-approach-to-optimizing-typescript-type-checking-performance#marking-the-workbench

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
kysely	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jan 9, 2025 10:39am

[igalklebanov]

Results after re-ordering SelectFrom type's branching by commonality. single table > multi-table > expression/s.
Less instantiations better.
knex.* is Kysely<any>

Mistakes (~) are now significantly cheaper.
Single table is now cheaper.
Multi-table a bit more expensive now - less common so no biggy.

🏌️  kysely.selectFrom(table)
⛳ Result: 372 instantiations
🎯 Baseline: 388 instantiations
📊 Delta: -4.12%

🏌️  kysely.selectFrom(~table)
⛳ Result: 6864 instantiations
🎯 Baseline: 9314 instantiations
📉 kysely.selectFrom(~table) was under baseline by 26.30%! Consider setting a new baseline.

🏌️  kysely.selectFrom(table as alias)
⛳ Result: 385 instantiations
🎯 Baseline: 401 instantiations
📊 Delta: -3.99%

🏌️  kysely.selectFrom([table])
⛳ Result: 427 instantiations
🎯 Baseline: 413 instantiations
📊 Delta: +3.39%

🏌️  kysely.selectFrom([~table])
⛳ Result: 6914 instantiations
🎯 Baseline: 9364 instantiations
📉 kysely.selectFrom([~table]) was under baseline by 26.16%! Consider setting a new baseline.

🏌️  kysely.selectFrom([table as alias])
⛳ Result: 427 instantiations
🎯 Baseline: 413 instantiations
📊 Delta: +3.39%

🏌️  kysely.selectFrom([table, table])
⛳ Result: 427 instantiations
🎯 Baseline: 413 instantiations
📊 Delta: +3.39%

🏌️  kysely.selectFrom([table, ~table])
⛳ Result: 6917 instantiations
🎯 Baseline: 9367 instantiations
📉 kysely.selectFrom([table, ~table]) was under baseline by 26.16%! Consider setting a new baseline.

🏌️  kysely.selectFrom([table as alias, table as alias])
⛳ Result: 427 instantiations
🎯 Baseline: 413 instantiations
📊 Delta: +3.39%

🏌️  knex.selectFrom(table)
⛳ Result: 124 instantiations
🎯 Baseline: 140 instantiations
📊 Delta: -11.43%

🏌️  knex.selectFrom(~table)
⛳ Result: 124 instantiations
🎯 Baseline: 140 instantiations
📊 Delta: -11.43 %

🏌️  knex.selectFrom(table as alias)
⛳ Result: 124 instantiations
🎯 Baseline: 140 instantiations
📊 Delta: -11.43%

🏌️  knex.selectFrom([table])
⛳ Result: 179 instantiations
🎯 Baseline: 165 instantiations
📊 Delta: +8.48%

🏌️  knex.selectFrom([~table])
⛳ Result: 179 instantiations
🎯 Baseline: 165 instantiations
📊 Delta: +8.48%

🏌️  knex.selectFrom([table as alias])
⛳ Result: 179 instantiations
🎯 Baseline: 165 instantiations
📊 Delta: +8.48%

🏌️  knex.selectFrom([table, table])
⛳ Result: 179 instantiations
🎯 Baseline: 165 instantiations
📊 Delta: +8.48%

🏌️  knex.selectFrom([table, ~table])
⛳ Result: 179 instantiations
🎯 Baseline: 165 instantiations
📊 Delta: +8.48%

🏌️  knex.selectFrom([table as alias, table as alias])
⛳ Result: 179 instantiations
🎯 Baseline: 165 instantiations
📊 Delta: +8.48%

[pkg-pr-new]

Open in Stackblitz • kysely_koa_example

npm i https://pkg.pr.new/kysely-org/kysely@1314

commit: 3ae8c16

[koskimas]

Awesome! Looks good to me!

[koskimas]

Calling this knex is a bit confusing. Maybe just kyselyAny or something?