@modelscript/core

Central compiler engine for ModelScript. Provides Modelica parsing, semantic analysis, model instantiation, DAE flattening, simulation, optimization, SVG diagram rendering, linting, and i18n support.

Features

• Parsing — incremental Tree-sitter-based parsing with full Modelica grammar coverage
• Semantic Analysis — scope resolution, type checking, and name lookup across class hierarchies
• Flattening — transforms hierarchical Modelica models into flat DAE (Differential Algebraic Equations)
• Simulation — ODE/DAE numerical solver with Pantelides index reduction, BLT ordering, and alias elimination
• Optimization — direct collocation solver for Modelica optimal control problems
• Interpreter — evaluates Modelica expressions, functions, and algorithms at compile time
• Diagram Rendering — generates interactive SVG diagrams from Modelica annotation data
• Linting — 15+ lint rules covering parser errors, unresolved references, type mismatches, and structural checks
• i18n — extracts translatable strings from Modelica model descriptions and annotations

Scripts

| Command | Description | | --------------- | ----------------------------------- | | npm run build | Clean, lint, and compile TypeScript | | npm run clean | Remove dist/ output | | npm run lint | Run ESLint on src/ | | npm test | Run the Modelica test suite | | npm run watch | Compile in watch mode |

Testing

npm test

Runs the Modelica test suite via tsx tests/testsuite-runner.ts with increased heap size (8 GB). Tests can be filtered by subdirectory or individual .mo file path.

# Run a specific test directory
npx tsx tests/testsuite-runner.ts OpenModelica/flattening/modelica/types

# Run a single test file
npx tsx tests/testsuite-runner.ts OpenModelica/flattening/modelica/types/IntegerToEnumeration.mo

# Update expected output to match actual output
npx tsx tests/testsuite-runner.ts --update path/to/test.mo