export function preventDefault(event: Event) {
    event.preventDefault();

    return event;
}

export function splitOnce(
    str: string,
    search: string
): [string, string | null] {
    const index = str.indexOf(search);

    if (index === -1) {
        return [str, null];
    }

    return [str.slice(0, index), str.slice(index + 1)];
}

export function trim(str: string, char: string) {
    let start = 0;
    let end = str.length;

    while (start < end && str[start] === char) ++start;

    while (end > start && str[end - 1] === char) --end;

    return start > 0 || end < str.length ? str.substring(start, end) : str;
}

export function copyToClipboard(content: string): boolean {
    navigator.clipboard.writeText(content);

    return navigator.clipboard != null;
}

export function capitalize(s: string): string {
    return s.slice(0, 1).toUpperCase() + s.slice(1);
}