Function maybeIterator

lib/infer.js:1876–1883

(fn, output)

  }

  function maybeIterator(fn, output) {
    if (!fn.generator) return output;
    if (!fn.computeRet) { // Reuse iterator objects for non-computed return types
      if (fn.generator === true) fn.generator = generatorResult(fn.yieldval, output, fn.async);
      return fn.generator;
    }
    return generatorResult(fn.yieldval, output, fn.async);
  }

  function computeReturnType(funcNode, argNodes, scope) {
    var fn = findType(funcNode, scope).getFunctionType();