1  import { md5 } from "@noble/hashes/legacy.js";
 2  import { bytesToHex, utf8ToBytes } from "@noble/hashes/utils.js";
 3  
 4  /**
 5   * Converts a UTF-8 string into an MD5 HEX.
 6   *
 7   * @example
 8   * md5hex("helloworld"); // "fc5e038d38a57032085441e7fe7010b0"
 9   */
10  export const md5hex = (input: string) => bytesToHex(md5(utf8ToBytes(input)));
11  
12  /**
13   * Removes query parameters from a string, typically a URL.
14   *
15   * @example
16   * removeQueryParams("https://example.com/path?query=param"); // "https://example.com/path"
17   */
18  export const removeQueryParams = (input: string) => {
19    return input || typeof input === "string" ? input.split("?")[0] : null;
20  };
21  
22  /**
23   * Returns a number if the input is a number, otherwise returns null.
24   *
25   * @example
26   * numberOrNull(42); // 42
27   * numberOrNull("not a number"); // null
28   */
29  export const numberOrNull = (num: unknown): number | null => {
30    return typeof num === "number" ? num : null;
31  };