datahub/datahub-web/packages/data-portal/config/targets.js

'use strict';

const browsers = ['last 1 Chrome versions', 'last 1 Firefox versions', 'last 1 Safari versions'];

const isCI = !!process.env.CI;
const isProduction = process.env.EMBER_ENV === 'production';

if (isCI || isProduction) {
  browsers.push('ie 11');
}

module.exports = {
  browsers
};