jrelease/lib/hook.js

Rewrite of Vercel's Release

// Native
const { existsSync } = require('fs')
const { resolve } = require('path')

// Utilities
const handleSpinner = require('../lib/spinner')

module.exports = async (flag, markdown, changes) => {
  let file = resolve(process.cwd(), 'jrelease.js')

  if (!flag && !existsSync(file)) {
    return markdown
  }

  if (flag) {
    file = resolve(process.cwd(), flag)

    if (!existsSync(file)) {
      handleSpinner.fail(`The specified ${'--hook'} file doesn't exist`)
    }
  }

  let hook

  try {
    hook = require(file)
  } catch (err) {
    handleSpinner.fail(err)
  }

  if (typeof hook !== 'function') {
    handleSpinner.fail('The release hook file doesn\'t export a function')
  }

  if (global.spinner) {
    global.spinner.succeed('Found a hook file')
  }

  let filtered

  try {
    filtered = await hook(markdown, changes)
  } catch (err) {
    handleSpinner.fail(err)
  }

  return filtered
}