Computing Dependencies

Computing the dependencies

We can find the dependencies of the generated code by traversing the AST and collecting the names of the functions that are not part of the target language. We can use espree.estraverse for that:

const findUsedFunctions = function (ast) {
  const usedSupportFunctions = new Set();
  estraverse.traverse(ast, {
    enter: function (node, _ ) {
      if (node.type === "Identifier" && exportedSupportIdentifiers.includes(node.name)) {
        usedSupportFunctions.add(node.name)
      }
    },
  });
  return Array.from(usedSupportFunctions);
};

Where exportedSupportIdentifiers is an array with the names of the functions exported by the support library:

const exportedSupportIdentifiers = Object.keys(require("./support-lib.js")); // [ power, factorial ]

Clases Currying