Block content to Markdown script

markdown.js

/* eslint-disable no-console */
/**
 * Generate a markdown document in a dev.to format.
 * This runs from the studio folder and requires additional
 * dependencies:
 *      -   @sanity/block-content-to-markdown
 *      -   minimist
 *
 * Run this with $ sanity exec markdown.js -- --id=<document id>
 */

const client = require('part:@sanity/base/client')
const toMarkdown = require('@sanity/block-content-to-markdown')
const argv = require('minimist')(process.argv.slice(2));

const baseUrl = "https://sanity.io/blog"
const { id = '' } = argv
if (!id) {
    console.error('You have to specify an id: sanity exec markdown.js -- --id=<document-id>')
    process.exit(1)
}

const serializers = {
  types: {
    code: props => '```' + props.node.language + '\n' + props.node.code + '\n```',
    gotcha: props => `## Gotcha\n\n${props.node.text}\n\n`,
    callToAction: props => `[*${props.node.linkText}*](${props.node.url})`
  }
}

client.fetch('*[_id == $id][0]', { id }).then(article => {
  const { title, text = [], blurb = [], slug = '' } = article
  console.log(`
---
title: ${title}
published: false
description: ${toMarkdown(blurb, {serializers, dataset: client.clientConfig.dataset, projectId: client.clientConfig.projectId})}
tags:
canonical_url: ${baseUrl}/${slug.current}
---
  `)
  console.log(toMarkdown(text, {serializers, dataset: client.clientConfig.dataset, projectId: client.clientConfig.projectId}))
})