ttypescript
Over TypeScript tool for custom transformers in tsconfig.json
Pricing
Free tier
Flat rate
Adoption
↘CoolingLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is ttypescript?
ttypescript is an extension over TypeScript that allows the use of custom transformers specified in the tsconfig.json file, enhancing the capabilities of TypeScript.
Key differentiator
“ttypescript stands out by providing an easy way to extend TypeScript with custom transformers, making it ideal for projects that require additional type checking or syntax transformations without altering the core TypeScript environment.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
Requires deep understanding of TypeScript's compiler API and custom transformers.
The project relies heavily on the core TypeScript documentation, lacking detailed guides for ttypescript-specific features.
Custom transformers can introduce significant build-time overhead, especially in large projects with many files.
Integrating ttypescript requires modifying tsconfig.json and potentially setting up additional scripts or configurations for transformer management.
Fit analysis
Who is it for?
✓ Best for
Developers who need to extend TypeScript functionality without modifying core TypeScript
Projects requiring custom syntax or transformations in their TypeScript codebase
Teams working on complex projects where additional type checking is beneficial
✕ Not a fit for
Users looking for a complete IDE solution (ttypescript is a library extension)
Developers who prefer not to modify tsconfig.json for project setup
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
Integrations
Next step
Get Started with ttypescript
Step-by-step setup guide with code examples and common gotchas.