CustoRules - How to use it? (Do not seem to work)

[onigetoc]

I tryed this and nothing happened.

const options = {
	customRules: {
		title: {
			rules: [
				[ 'meta[name="viewport"][content]', (element) => element.getAttribute('content') ]
			],
			processor: (text) => text.toLowerCase()
		}
	}
}

const run = async function() {
	const data = await getMetaData('https://lirantal.com/', options)
	console.log(data)
}

run()

I thought that it will appear in the data array. But no.