Extraction Strategies
→ the extraction of language concepts is achieved by an implementation of the LCE Architecture
Information Sources:
- the main source of information for extracting concepts from TS source code is the ESLint AST (provided through
@typescript-eslint/typescript-estree)- use ESLint Playground to easily explore the data structures
- additional information, mostly related to types, is extracted via the native TypeScript Compiler API (for more information see here and here), especially the TypeChecker
- direct translation between nodes of the two different ASTs can easily be done via the
servicesglobal context - the Compiler API should be used sparingly, as it is less developer-friendly than the ESLint API
- direct translation between nodes of the two different ASTs can easily be done via the
General Guidelines:
- all concepts have to be extracted within a single traversal of the ESLint AST
- separate/additional sub-tree traversals are not allowed
Currently Implemented Extraction Strategies:
- Dependencies and FQNs
- Types
- Values
- Imports
- Exports
- Classes and Interfaces
- Function Declarations
- Variable Declarations
- Type Aliases
- Enums
- Decorators
- Code Coordinates
- Special Case: Indexed Access Types