# TypeScript Support in Maguyva: Better Context for Monorepos

Canonical source: https://maguyva.ai/languages/typescript

License: text under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/); code samples under [MIT-0](https://opensource.org/license/mit-0); the Maguyva name, logos, brand assets and other code are not covered. Details: [maguyva.ai/license](https://maguyva.ai/license).

Maguyva supports TypeScript with AST parsing and symbol extraction so AI agents can trace interfaces, implementations, shared packages, and JSX-heavy application code across monorepos.

## Support snapshot

- Tier: AST and symbol support
- Programming
- Extensions: .cts, .d.ts, .mts, .spec.ts, .stories.ts, .test.ts, +1 more
- Real AST parsing for syntax-aware search and structural context.
- Named symbols feed semantic lookup and cross-reference. Graph navigation is available when relationship extraction is enabled.
- This language contributes symbols and relationships to graph-aware search; supported edge types vary with its native constructs.
- AST parsing and symbol extraction are both available.

## Best fit

- Product and platform teams running Next.js, Node services, shared packages, and tooling inside one TypeScript repo.
- Repos where interfaces, DTOs, schemas, and React components move together but live in different directories.
- Teams trying to give AI agents safe context before they touch shared types or package boundaries.

## Agent workflows

- Follow a type, interface, or component from its definition to the code paths that actually use it.
- Compare implementations across packages before changing a shared helper or API contract.
- Map the likely blast radius of editing a shared type, utility, or service module.

## Why TypeScript pages matter

TypeScript is the language where many teams expect AI-assisted refactoring to finally feel safe. The type system helps, but it does not remove the real problem: shared packages, DTOs, generated clients, React components, tests, and app code all pulling on the same names across a large repo.

For TypeScript, the standard is higher than "it understands syntax." The agent needs to follow the contract from definition to implementation to impact radius before it edits a shared type, hook, or client.

## What Maguyva actually extracts in TypeScript

Maguyva extracts classes, methods, interfaces, and type aliases across `.ts`, `.mts`, `.cts`, and the common TypeScript file variants around tests and stories. Member prefixes are normalized, but class-qualified identifiers are preserved, which helps when a repo has both a bare helper name and a class-scoped method with the same final segment.

JSX is treated as a real structural signal rather than stray markup. In indexed TypeScript files, tests, stories, and configuration remain available alongside application code, helping an agent check usage examples and setup before changing a shared component or service.

## Useful MCP workflows for TypeScript repos

Three starting patterns are usually enough:

- Use `find_symbol` when you already know the interface, type alias, hook, or service name.
- Use `dependency_search` before changing shared types or clients that may fan out across packages.
- Use `structural_search` when you need a code shape, not a keyword match, for example repeated component or method patterns.

For conceptual questions like "follow the checkout submission path," `get_task_context` is often a better first hop than a raw search.

## Where this page is most relevant

This page is strongest for web and platform monorepos where TypeScript is the coordination layer for multiple packages. If your repo still includes a lot of older JS, read the [JavaScript guide](/languages/javascript). If your question is really "can the agent hold app code and infra context together?" pair this with [Terraform](/languages/terraform).

## Engine details

- TypeScript extracts classes, methods, interfaces, and type aliases rather than flattening everything into generic symbols.
- Member prefixes are stripped, but class-qualified identifiers are preserved, which helps distinguish `CheckoutService.create` from a bare `create`.
- JSX elements count as instantiations. In indexed TypeScript files, tests, stories, and configuration remain available as context alongside application code.

## Useful MCP entry points

- `find_symbol`: Start here when you know the shared interface, type alias, hook, or service you want to inspect.
- `dependency_search`: Use it before changing a shared DTO or client to get a realistic impact radius across packages.
- `structural_search`: Use AST-level search when you need a pattern, not a string match, for example repeated component or method shapes.