@rsksmart/rsk-utils/dist/esm/bytes.js

A collection of JS utility functions for Rootstock

import { remove0x, isHexString, add0x } from './strings.js';
/**
 * @description Converts a value (string, number, or Buffer) into a Buffer object.
 * Handles hexadecimal strings and numbers by automatically stripping the `"0x"` prefix and applying the appropriate encoding.
 *
 * @param {string | number | Buffer} value - The value to be converted to a Buffer. It can be a string, number, or an existing Buffer.
 * @param {BufferEncoding} [encoding='hex'] - The encoding format for the input string (e.g., `'hex'`, `'utf8'`). Defaults to `'hex'` for hexadecimal strings.
 * @returns {Buffer} - The resulting Buffer representation of the input value.
 * @throws {Error} - Throws an error if the input value cannot be converted to a Buffer.
 */
export function toBuffer(value, encoding = 'hex') {
    if (Buffer.isBuffer(value))
        return value;
    if (typeof value === 'number')
        value = value.toString();
    let strValue = remove0x(value);
    if (!encoding && isHexString(strValue))
        encoding = 'hex';
    return Buffer.from(strValue, encoding);
}
/**
 * @description Converts a Buffer into a hexadecimal string prefixed with `"0x"`.
 * Useful for representing binary data in a human-readable hexadecimal format.
 *
 * @param {Buffer} buffer - The Buffer to be converted into a hex string.
 * @returns {string} - The resulting hexadecimal string with a `"0x"` prefix.
 */
export function bufferToHex(buffer) {
    return add0x(buffer.toString('hex'));
}
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