Marked version:
3.x.x

Describe the bug
A clear and concise description of what the bug is.

Right now, import {use} from "markedjs" does not work, this worked in 2.x.x.

To Reproduce
Steps to reproduce the behavior:

Install & import it.
The DefinitelyTyped definitions also mark this incorrectly as being supported still.

A workaround is importing one of the structur

When looking up an attribute with .attr(), the name of the attribute should be lowercased before looking up in .attribs object.

Discussed in swc-project/swc#3065

A full script:

#!/bin/bash

cat /etc/passwd | cut -f3 -d":" | sort -n | uniq -c | while read x; do
	[ -z "${x}" ] && break
	set - $x
	if [ $1 -gt 1 ]; then
		users=$(awk -F: '($3 == n) { print $1 }' n=$2 /etc/passwd | xargs)
		exit 1
	fi
done

Just a simple script to reproduce the issue:

#!/bin/bash
set - "test"

When I'm trying to run this script using the inte