Discount `dbg!()` in Bash

what.bash

function what() {
    echo -n "what $1: "
    if declare -p "$1" > /dev/null 2>&1; then
        declare -p "$1"
    elif declare -F "$1" > /dev/null 2>&1; then
        declare -F "$1"
    elif type -t "$1" > /dev/null 2>&1; then
        type -t "$1"
    else
        echo "string --" "$1"
    fi
}