Parse LDIF files and produce a CSV of group membership

package.json

{
  "name": "ldif-parse",
  "version": "1.0.0",
  "main": "index.js",
  "license": "MIT",
  "dependencies": {
    "ldif": "^0.5.1"
  }
}

parse.js

const ldif = require("ldif");
const file = "output.ldif";
const input = require("fs").readFileSync(file, "utf8");

const document = ldif.parse(input);
const people = document.entries
  .filter(object => {
    return object.attributes.find(attribute => {
      return (
        attribute.attribute.attribute == "objectClass" &&
        attribute.value.value == "person"
      );
    });
  })
  .reduce((acc, person) => {
    acc[person.dn] = person.attributes.find(
      attribute => attribute.attribute.attribute == "cn"
    ).value.value;
    return acc;
  }, {});
const groups = document.entries
  .filter(item => {
    return item.attributes.find(attribute => {
      return (
        attribute.attribute.attribute == "objectClass" &&
        attribute.value.value == "groupOfNames"
      );
    });
  })
  .reduce((acc, group) => {
    acc[group.dn] = {
      name: group.attributes.find(
        attribute => attribute.attribute.attribute == "cn"
      ).value.value,
      members: group.attributes
        .filter(attribute => attribute.attribute.attribute === "member")
        .map(attribute => {
          return people[attribute.value.value]
            ? people[attribute.value.value]
            : attribute.value.value;
        })
    };
    return acc;
  }, {});
const output = groups;
//console.log(JSON.stringify(output, null, 2));
Object.keys(groups).forEach(group =>
  groups[group].members.forEach(member =>
    process.stdout.write(`${member},${groups[group].name}\n`)
  )
);

yarn.lock

# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
# yarn lockfile v1


ldif@^0.5.1:
  version "0.5.1"
  resolved "https://registry.yarnpkg.com/ldif/-/ldif-0.5.1.tgz#2135975a83755df96fc277eeaea6a59cc03c1e83"
  integrity sha1-ITWXWoN1XflvwnfurqalnMA8HoM=