demo.js

const persons = require('./content/persons.json')
let activeMentorships = require('./content/activeMentorships.json')

activeMentorships = activeMentorships.mentorships

persons.map((person) => {
  person.mentorships = activeMentorships.filter((mentorship) => {
    if (mentorship.mentor.endsWith(person.slug)) {
      return mentorship
    }
  })
  person.contributions = activeMentorships.filter((mentorship) => {
    const gh = person.github
    console.log(gh)
    if (gh) {
      const amIExists = mentorship.contributors.find((contributor) => {
        if (contributor.github_address === gh) {
          return contributor
        }
      })
      if (amIExists) {
        return mentorship
      }
    }
  })
})

console.log(persons)