Function visit

src/preprocessor/preprocessor.ts:140–149

(node: PreprocessorAstNode)

const evaluate = (ast: PreprocessorAstNode, evaluators: NodeEvaluators) => {
  const visit = (node: PreprocessorAstNode) => {
    const evaluator = evaluators[node.type];
    if (!evaluator) {
      throw new Error(`No evaluate() evaluator for ${node.type}`);
    }

    // I can't figure out why evalutor has node type never here
    // @ts-ignore
    return evaluator(node, visit);
  };
  return visit(ast);
};