fix: improve performance in many places

[alexander-akait]

Summary

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Use of AI

[changeset-bot]

⚠️ No Changeset found

Latest commit: 3a5fb5d

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[codecov]

Codecov Report

❌ Patch coverage is 92.92035% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 92.99%. Comparing base (5a07869) to head (3a5fb5d).

Files with missing lines	Patch %	Lines
lib/ReplaceSource.js	85.71%	2 Missing and 1 partial ⚠️
lib/RawSource.js	88.88%	2 Missing ⚠️
lib/OriginalSource.js	95.23%	1 Missing ⚠️
lib/SourceMapSource.js	83.33%	1 Missing ⚠️
lib/helpers/streamChunksOfRawSource.js	92.85%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #199      +/-   ##
==========================================
- Coverage   93.24%   92.99%   -0.26%     
==========================================
  Files          25       25              
  Lines        1866     1884      +18     
  Branches      595      594       -1     
==========================================
+ Hits         1740     1752      +12     
- Misses        117      122       +5     
- Partials        9       10       +1     

Flag	Coverage Δ
integration	92.99% <92.92%> (-0.26%)	⬇️

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[codspeed-hq]

Merging this PR will degrade performance by 17.42%

⚡ 38 improved benchmarks
❌ 2 regressed benchmarks
✅ 107 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Benchmark	BASE	HEAD	Efficiency
⚡	cached-source: getCachedData() then restore	20.5 ms	18.3 ms	+12.03%
❌	cached-source: new CachedSource()	301.8 µs	342.7 µs	-11.93%
⚡	cached-source: sourceAndMap() (cold)	20.5 ms	17.1 ms	+20.3%
⚡	compat-source: wraps OriginalSource	35.3 ms	30.8 ms	+14.57%
⚡	concat-source: map()	23 ms	19.6 ms	+17.49%
⚡	helpers/getGeneratedSourceInfo: big source	9.2 ms	2.1 ms	×4.4
⚡	concat-source: size()	205.7 µs	117.8 µs	+74.57%
⚡	helpers/getGeneratedSourceInfo: fixture	30.3 ms	9.7 ms	×3.1
⚡	cached-source: streamChunks() (cold)	11.5 ms	8.8 ms	+30.64%
⚡	concat-source: sourceAndMap()	23 ms	19.6 ms	+17.44%
⚡	helpers/createMappingsSerializer: lines-only serializer	2.8 ms	2.5 ms	+11.66%
⚡	helpers/createMappingsSerializer: full serializer	4.5 ms	3.8 ms	+18.53%
⚡	helpers/splitIntoLines: big source	10.9 ms	4.8 ms	×2.3
⚡	helpers/splitIntoLines: empty	326.9 µs	88.3 µs	×3.7
⚡	helpers/splitIntoLines: fixture	41.2 ms	23.9 ms	+72.63%
⚡	helpers/splitIntoLines: long lines	425.9 ms	2 ms	×210
⚡	original-source: map({columns:false})	7.1 ms	4 ms	+78.67%
⚡	original-source: sourceAndMap({columns:false})	7.1 ms	4 ms	+77.44%
⚡	original-source: sourceAndMap()	20.4 ms	17 ms	+20.03%
⚡	original-source: map()	20.2 ms	17 ms	+19.32%
...	...	...	...	...

ℹ️ Only the first 20 benchmarks are displayed. Go to the app to view all benchmarks.

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_{Comparing fix-perf (3a5fb5d) with main (5a07869)}