---
title: "Speeding up the JavaScript ecosystem - Semver"
url: https://daily.dev/posts/speeding-up-the-javascript-ecosystem---semver-kfcfwtvs2
source_url: https://marvinh.dev/blog/speeding-up-javascript-ecosystem-part-12/
type: article
source: "Marvin Hagemeister"
published: 2025-08-10T08:33:13.255Z
updated: 2025-08-10T08:33:38.564Z
tags: ["javascript", "performance", "npm"]
reading_time: 7
upvotes: 20
comments: 1
language: en
---

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# Speeding up the JavaScript ecosystem - Semver

**[Marvin Hagemeister](https://daily.dev/sources/marvinh)** · 7 min read · 20 upvotes · 1 comments

## Summary

The semver library used by npm, yarn, and pnpm can be optimized by 33x through eliminating duplicate validation steps and implementing more efficient parsing. During package installation, these tools make over 21,000 semver function calls, with most being redundant validation before parsing. By following the 'parse, don't validate' principle and writing a custom parser, performance improvements of 10-25x are achievable, significantly speeding up dependency installation across all major JavaScript package managers.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://marvinh.dev/blog/speeding-up-javascript-ecosystem-part-12/>

## Community discussion

Top comments from developers on daily.dev.

**@vikyw** · 4 upvotes

> please do a PR to semver or npm

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---

Tags: [#javascript](https://daily.dev/tags/javascript), [#performance](https://daily.dev/tags/performance), [#npm](https://daily.dev/tags/npm)

[View this post on daily.dev](https://daily.dev/posts/speeding-up-the-javascript-ecosystem---semver-kfcfwtvs2)