We Ditched TypeScript 5.5 for ReScript 11.0 and Cut Our Frontend Bugs 40%

📰 Dev.to · ANKUSH CHOUDHARY JOHAL

Learn how a fintech startup reduced frontend bugs by 40% after migrating from TypeScript 5.5 to ReScript 11.0

intermediate Published 29 Apr 2026

Action Steps

Assess your current TypeScript codebase for potential migration to ReScript
Evaluate the benefits of ReScript, such as improved type safety and performance
Plan the migration process, including updating dependencies and configuring the build process
Execute the migration, using tools like the ReScript compiler and converter
Test and verify the migrated codebase to ensure correctness and stability

Who Needs to Know This

Frontend teams and developers can benefit from this migration to improve code quality and reduce bugs

Key Insight

💡 ReScript's improved type safety and performance can significantly reduce frontend bugs

Key Takeaways

Learn how a fintech startup reduced frontend bugs by 40% after migrating from TypeScript 5.5 to ReScript 11.0

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Title: We Ditched TypeScript 5.5 for ReScript 11.0 and Cut Our Frontend Bugs 40%

URL Source: https://dev.to/johalputt/we-ditched-typescript-55-for-rescript-110-and-cut-our-frontend-bugs-40-19i2

Published Time: 2026-04-29T12:07:27Z

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# We Ditched TypeScript 5.5 for ReScript 11.0 and Cut Our Frontend Bugs 40% - DEV Community
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Posted on Apr 29 • Originally published at [johal.in](https://johal.in/we-ditched-typescript-55-rescript-110-cut-our/)

# We Ditched TypeScript 5.5 for ReScript 11.0 and Cut Our Frontend Bugs 40%

[#ditched](https://dev.to/t/ditched)[#typescript](https://dev.to/t/typescript)[#rescript](https://dev.to/t/rescript)[#frontend](https://dev.to/t/frontend)

In Q3 2024, our 12-person frontend team at a Series C fintech startup tracked 142 critical production bugs in our TypeScript 5.5 codebase over 6 months. After migrating to ReScript 11.0, that number dropped to 85 in the same period—a 40.1% reduction, with

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We Ditched TypeScript 5.5 for ReScript 11.0 and Cut Our Frontend Bugs 40%

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