# 10-40% faster JavaScript and TypeScript analysis

**URL:** <https://community.sonarsource.com/t/10-40-faster-javascript-and-typescript-analysis/177178>\
**Category:** Sonar Updates\
**Tags:** speedofanalysis, typescript, javascript\
**Created:** [February 3, 2026, 3:57pm UTC](https://community.sonarsource.com/t/10-40-faster-javascript-and-typescript-analysis/177178 "2026-02-03T15:57:29Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![gab](https://dub1.discourse-cdn.com/sonarsource/user_avatar/community.sonarsource.com/gab/32/72206_2.png) [@gab](https://community.sonarsource.com/u/gab)\
**Post date:** [February 3, 2026, 3:57pm UTC](https://community.sonarsource.com/t/10-40-faster-javascript-and-typescript-analysis/177178/1 "2026-02-03T15:57:29Z")

</div>

Hello community,

Speed is a crucial aspect of the analysis experience for developers, and Sonar has consistently invested [in this area](https://www.sonarsource.com/blog/sonars-analysis-performance-targets/).

We are excited to share significant advancements in the speed of JavaScript and TypeScript analysis within SonarQube. This involved major improvements in the analyzer internals to reduce I/O overhead.

We’ve incrementally shipped the improvements to all customers. Here are average gains from real projects in SonarQube Cloud, across various sizes:

| Size | Before (seconds) | After (seconds) | Improvement (Δ) |
| --- | --- | --- | --- |
| ≤ 1k LOC (XS) | 49 | 44 | 10% |
| 10k LOC (S) | 78 | 64 | 18% |
| 100k LOC (M) | 118 | 98 | 17% |
| 500k LOC (L) | 256 | 198 | 22% |
| 1M LOC (XL) | 581 | 350 | 40% |

Notice the biggest projects are seeing the biggest speed gains.

This is available in SonarQube Cloud, SonarQube Server 2026.1 LTA, and SonarQube for IDE.

Enjoy!