ts-patch
Patch TypeScript to support custom transformers in tsconfig.json
Pricing
Free tier
Flat rate
Adoption
→StableLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is ts-patch?
ts-patch allows developers to extend TypeScript by adding custom transformers through the tsconfig.json file, enhancing flexibility and customization for advanced TypeScript projects.
Key differentiator
“ts-patch stands out as an open-source tool that allows developers to extend TypeScript's core functionalities through custom transformers, offering unparalleled flexibility in advanced TypeScript projects.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
ts-patch requires a deep understanding of TypeScript's compiler API and transformer system, which can be challenging for those unfamiliar with these concepts.
The official documentation is sparse, and the community around ts-patch is relatively small, making it harder to find solutions or examples online.
Configuring custom transformers in tsconfig.json can be intricate and error-prone, especially when dealing with complex project structures and multiple transformer dependencies.
Adding custom transformers can introduce additional processing time during the TypeScript compilation phase, potentially slowing down build times for large projects.
Fit analysis
Who is it for?
✓ Best for
TypeScript developers needing to extend the language's capabilities through custom transformers
Projects that require advanced customization of TypeScript compilation process
Teams working on complex TypeScript projects where built-in features are insufficient
✕ Not a fit for
Developers looking for a simple, out-of-the-box TypeScript experience without customization
Projects with minimal need for extending TypeScript functionality beyond its default capabilities
Cost structure
Pricing
Free Tier
Available
Open source — free to use
Starts at
$0
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Works well with
Next step
Get Started with ts-patch
Step-by-step setup guide with code examples and common gotchas.