{
	"presets": [
		[
			"env",
			{
				// Do not transform modules to CommonJS.
				"modules": false,
				// See modern tier: https://www.mediawiki.org/wiki/Compatibility#Browser_support_matrix
				"targets": {
					// https://en.wikipedia.org/wiki/Google_Chrome_version_history
					"chrome": "64",
					"ie": "11",
					// https://en.wikipedia.org/wiki/Firefox_version_history
					"firefox": "58",
					"safari": "5.1",
					"opera": "15",
					"ios": "6.1",
					"android": "4.1"
				}
			}
		]
	]
}