@thi.ng/parse/xform/count.js

Purely functional parser combinators & AST generation for generic inputs

import { xform } from "../combinators/xform.js";
const xfCount = (scope) => {
  scope.result = scope.children?.length || 0;
  scope.children = null;
  return scope;
};
const count = (parser) => xform(parser, xfCount);
export {
  count,
  xfCount
};