module.exports = { timeout, queryAsync, findAsync, pollUntilTruthy, } function timeout (time) { return new Promise((resolve, reject) => { setTimeout(resolve, time || 1500) }) } async function findAsync(container, selector, opts) { try { return await pollUntilTruthy(() => { const result = container.find(selector) if (result.length > 0) return result }, opts) } catch (err) { throw new Error(`Failed to find element within interval: "${selector}"`) } } async function queryAsync(jQuery, selector, opts) { try { return await pollUntilTruthy(() => { const result = jQuery(selector) if (result.length > 0) return result }, opts) } catch (err) { throw new Error(`Failed to find element within interval: "${selector}"`) } } async function pollUntilTruthy(fn, opts = {}){ const pollingInterval = opts.pollingInterval || 100 const timeoutInterval = opts.timeoutInterval || 5000 const start = Date.now() let result while (!result) { // check if timedout const now = Date.now() if ((now - start) > timeoutInterval) { throw new Error(`pollUntilTruthy - failed to return truthy within interval`) } // check for result result = fn() // run again after timeout await timeout(pollingInterval, timeoutInterval) } return result }