How do I run LeetCode problems locally with VSCode?

Clone the repo, npm install, open .js file, use Vitest Runner extension—click debug for breakpoints.

What's the best free alternative to LeetCode Premium debugging?

This JS playground repo: full tests for Blind 75, local speed, no paywall.

Can I add my own LeetCode test cases to this repo?

Yes—drop them in /tests/, PR away. Covers top problems, expanding to 3K.

Run LeetCode Locally: Free JS Playground Crushes the Paywall

LeetCode's debugging gold is paywalled? Not anymore. This open-source JS playground brings tests, Vitest, and VSCode magic right to your machine—free.

theAIcatchup Apr 10, 2026 4 min read

VSCode interface debugging LeetCode JavaScript problem with Vitest tests and breakpoints

⚡ Key Takeaways

Run LeetCode JS problems locally in VSCode with Vitest for free debugging power. 𝕏
Covers Blind 75 now, expanding—open-source, contribute tests. 𝕏
Ditches paywall hassles; debug like a pro with breakpoints and live vars. 𝕏

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theAIcatchup

Community-driven. Code-first.

#Blind 75 practice #JavaScript playground #JavaScript practice #LeetCode #LeetCode locally #VS Code debugging #VSCode debugging #Vitest tests #interview prep #javascript #open source #vitest #vscode

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Originally reported by Dev.to

⚡ Key Takeaways

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