Extraction Strategy: Types

Goal: Enrichment of the graph structures with type information in the form of :TS:Type nodes

Strategy:

1. Use the ESLint Parser Services to get the native TS Compiler node for the AST node of a construct for which a type should be determined
2. Use TS Compiler TypeChecker to extract all information necessary to construct the type concepts

Central Components:

• LCEType and all of it’s sub-classes: concepts that represent various type constructs that TypeScript offers
• type.utils.ts: collection of functions that utilize the TS Compiler API to extract type concepts
  • internally, the parseType and parseAnonymousType functions contain the central extraction logic
  • parseESNodeType and other exported parseX functions serve as shortcuts to extract type information for specific syntax constructs