overleaf/services/web/frontend/js/services/wait-for.js

/* eslint-disable
    max-len,
*/
// TODO: This file was created by bulk-decaffeinate.
// Fix any style issues and re-enable lint.
/*
 * decaffeinate suggestions:
 * DS102: Remove unnecessary code created because of implicit returns
 * DS207: Consider shorter variations of null checks
 * Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
 */
import App from '../base'

export default App.factory('waitFor', function ($q) {
  const waitFor = function (testFunction, timeout, pollInterval) {
    if (pollInterval == null) {
      pollInterval = 500
    }
    const iterationLimit = Math.floor(timeout / pollInterval)
    let iterations = 0
    return $q(function (resolve, reject) {
      let tryIteration
      return (tryIteration = function () {
        if (iterations > iterationLimit) {
          return reject(
            new Error(
              `waiting too long, ${JSON.stringify({ timeout, pollInterval })}`
            )
          )
        }
        iterations += 1
        const result = testFunction()
        if (result != null) {
          return resolve(result)
        } else {
          return setTimeout(tryIteration, pollInterval)
        }
      })()
    })
  }
  return waitFor
})