export function merge(…sets) {

if (sets.length > 1) {
    sets[0] = sets[0].slice(0, -1);
    const xl = sets.length - 1;
    for (let x = 1; x < xl; ++x) {
        sets[x] = sets[x].slice(1, -1);
    }
    sets[xl] = sets[xl].slice(1);
    return sets.join('');
}
else {
    return sets[0];
}

} export function subexp(str) {

return "(?:" + str + ")";

} export function typeOf(o) {

return o === undefined ? "undefined" : (o === null ? "null" : Object.prototype.toString.call(o).split(" ").pop().split("]").shift().toLowerCase());

} export function toUpperCase(str) {

return str.toUpperCase();

} export function toArray(obj) {

return obj !== undefined && obj !== null ? (obj instanceof Array ? obj : (typeof obj.length !== "number" || obj.split || obj.setInterval || obj.call ? [obj] : Array.prototype.slice.call(obj))) : [];

} export function assign(target, source) {

const obj = target;
if (source) {
    for (const key in source) {
        obj[key] = source[key];
    }
}
return obj;

} //# sourceMappingURL=util.js.map