sendgrid-mail/lib/set_config.js

The easiest way to send mail with sendgrid.

const fs = require('fs')
const debug = require('debug')('sendgrid-mail:config')
const dotenv = require('dotenv')

const setConfig = async (filename) => {
  debug(`setting configuration from ${filename}`)

  try {
    const envconfig = dotenv.parse(await fs.promises.readFile(filename))

    for (const k in envconfig) {
      if (!process.env[k]) {
        debug(`setting ${k}=${envconfig[k]}`)
        process.env[k] = envconfig[k]
      } else {
        debug(`not setting ${k}... already set to ${process.env[k]}`)
      }
    }
  } catch (err) {
    debug(`can't read file ${filename}`)
  }
}

module.exports = setConfig