crypto-janitor/src/utils/index.ts

The Crypto Janitor provides a simple interface for fetching and cleaning crypto account data.

/**
 * @description Sleep for x time
 * @param {number} ms - Milliseconds to sleep
 * @return {Promise<void>}
 */
export function sleep(ms: number): Promise<void> {
    return new Promise((resolve) => setTimeout(resolve, ms));
}

/**
 * @description Check if string is a valid url
 * @param {string} str - String to check
 * @return {boolean}
 */
export function validURL(str: string): boolean {
    const pattern = new RegExp(
        "^(https?:\\/\\/)?" + // protocol
            "((([a-z\\d]([a-z\\d-]*[a-z\\d])*)\\.)+[a-z]{2,}|" + // domain name
            "((\\d{1,3}\\.){3}\\d{1,3}))" + // OR ip (v4) address
            "(\\:\\d+)?(\\/[-a-z\\d%_.~+]*)*" + // port and path
            "(\\?[;&a-z\\d%_.~+=-]*)?" + // query string
            "(\\#[-a-z\\d_]*)?$",
        "i"
    ); // fragment locator
    return !!pattern.test(str);
}