himanshilt / nunjucks-await-filter Goto Github PK

const awaitFilter = require('nunjucks-await-filter')
const environment = nunjucks.configure()
awaitFilter(environment)

async function getWeather (city) {
  // This can be any async operation, like fetching data
  // from an external API, or getting records from a database.
  return request('weather.com', { city })
}

async function awaitFilter (functionPromise, callback) {
  try {
    // The called function returns a Promise, which we
    // now `await` until its done
    const result = await functionPromise

    // Then we call the Nunjucks async filter callback
    callback(null, result)
  } catch (error) {
    // And if the `functionPromise` throws an error
    // Nunjucks will pick it up here
    callback(error)
  }
}