export function __TS__ArrayConcat<T>(this: T[], ...items: Array<T | T[]>): T[] {

const result: T[] = [];

let len = 0;

for (const i of $range(1, this.length)) {

len++;

result[len - 1] = this[i - 1];

}

for (const i of $range(1, items.length)) {

const item = items[i - 1];

if (Array.isArray(item)) {

for (const j of $range(1, item.length)) {

len++;

result[len - 1] = item[j - 1];

}

} else {

len++;

result[len - 1] = item;

}

}

return result;

}