Calculate MD5 in Node.js

date

May 6, 2021

slug

calculate-md5-in-node

status

Published

summary

This gonna be short.

tags

Coding

type

Post

This gonna be short.

When I was developing Nobelium, I decided to switch to Gravatar as avatar. It's a service made by Automatic (the one who made WordPress), providing globally unique avatars for each person.

Getting the Image is quick and easy, on this guide, seems like I need to calculate md5 hash of an email, after some digging, I found Node.js has this built in. so here's the code:

import { createHash } from 'crypto'
const str = 'abcde'
const hash = createHash('md5').update(str).digest('hex')

So the rest of the work is very easy:

export async function getStaticProps({ params: { slug } }) {
  let posts = await getAllPosts()
  posts = posts.filter(post => post.status[0] === 'Published')
  const post = posts.find(t => t.slug === slug)
  const blockMap = await getPostBlocks(post.id)
  const emailHash = createHash('md5').update(BLOG.email).digest('hex')

  return {
    props: { post, blockMap, emailHash },
    revalidate: 1
  }
}

and I can take email hash as a prop, then pass to the corresponding components, and render the image using next/image.