function accept($, type) {
    let token = $.tokens[$.pos];
    if (token.type !== type) {
        return false;
    }
    $.pos++;
    return true;
}
function accept($, type) {
    let token = $.tokens[$.pos];
    if (token.type !== type) {
        return false;
    }
    $.pos++;
    return true;
}
function accept ( $ , type ) { let token = $ . tokens [ $ . pos ] ; if ( token . type !== type ) { return false ; } $ . pos ++ ; return true ; }
(object, string) => boolean
( object string ) = > boolean