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gvergnaud / ts-pattern

🎨 The exhaustive Pattern Matching library for TypeScript, with smart type inference.
MIT License
12.15k stars 129 forks source link

perf: improve type checking performance of BuildMany #286

Closed gvergnaud closed 3 weeks ago

gvergnaud commented 3 weeks ago

Performance improvement results

tsc --project tests/tsconfig.json --noEmit --extendedDiagnostics
Category Before After Evolution (%)
Files 206 206 0%
Lines of Library 40,612 40,612 0%
Lines of Definitions 27,266 27,266 0%
Lines of TypeScript 16,129 16,149 0.12%
Lines of JavaScript 0 0 -
Lines of JSON 0 0 -
Lines of Other 0 0 -
Identifiers 121,119 121,150 0.03%
Symbols 854,220 861,962 0.93%
Types 435,316 432,599 -0.65%
Instantiations 6,735,991 4,562,378 -32.33%
Memory used 732,233K 746,454K 1.95%
Assignability cache size 209,959 205,926 -1.92%
Identity cache size 28,093 28,250 0.56%
Subtype cache size 2,944 2,944 0%
Strict subtype cache size 4,628 4,628 0%
I/O Read time 0.01s 0.02s 100%
Parse time 0.21s 0.20s -4.76%
ResolveModule time 0.02s 0.02s 0%
ResolveTypeReference time 0.00s 0.01s -
ResolveLibrary time 0.01s 0.01s 0%
Program time 0.27s 0.27s 0%
Bind time 0.13s 0.13s 0%
Check time 5.78s 4.83s -16.44%
printTime time 0.00s 0.00s -
Emit time 0.00s 0.00s -
Total time 6.19s 5.23s -15.51%