ts-morph
TypeScript Compiler API wrapper for static analysis and programmatic code changes.
Pricing
Free tier
Flat rate
Adoption
→StableLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is ts-morph?
ts-morph is a powerful TypeScript compiler API wrapper that enables developers to perform static analysis and make programmatic changes to their code. It simplifies the process of working with TypeScript source files, making it easier to analyze and modify code programmatically.
Key differentiator
“ts-morph stands out by providing a more accessible and streamlined way to interact with the TypeScript compiler API compared to directly using the TypeScript Compiler API itself.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
ts-morph's API is comprehensive but not always intuitive, requiring a significant investment of time to fully understand and utilize effectively.
The official documentation lacks depth and practical examples, which can make it difficult for developers to implement complex use cases without extensive trial and error.
ts-morph's operations on large TypeScript projects can be slow due to the complexity of parsing and manipulating ASTs, which may lead to longer build times or slower tooling performance.
The library has a history of introducing significant API changes even within minor version updates, requiring developers to frequently adapt their codebases to the latest API.
Fit analysis
Who is it for?
✓ Best for
Developers who need to automate complex refactoring tasks in large TypeScript codebases.
Teams building static analysis tools that require deep integration with the TypeScript compiler.
✕ Not a fit for
Projects requiring real-time interaction with a running application, as ts-morph is primarily for offline/static analysis.
Developers looking for a solution to handle multiple languages beyond TypeScript.
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 ts-morph
Step-by-step setup guide with code examples and common gotchas.