@waku/rln/bundle/packages/utils/dist/bytes/index.js

RLN (Rate Limiting Nullifier) implementation for Waku

import { fromString } from '../../../../node_modules/uint8arrays/dist/src/from-string.js';
import '../../../../node_modules/multiformats/dist/src/bases/base10.js';
import '../../../../node_modules/multiformats/dist/src/bases/base16.js';
import '../../../../node_modules/multiformats/dist/src/bases/base2.js';
import '../../../../node_modules/multiformats/dist/src/bases/base256emoji.js';
import '../../../../node_modules/multiformats/dist/src/bases/base32.js';
import '../../../../node_modules/multiformats/dist/src/bases/base36.js';
import '../../../../node_modules/multiformats/dist/src/bases/base58.js';
import '../../../../node_modules/multiformats/dist/src/bases/base64.js';
import '../../../../node_modules/multiformats/dist/src/bases/base8.js';
import '../../../../node_modules/multiformats/dist/src/bases/identity.js';
import '../../../../node_modules/multiformats/dist/src/codecs/json.js';

/**
 * Convert input to a byte array.
 *
 * Handles both `0x` prefixed and non-prefixed strings.
 */
function hexToBytes(hex) {
    if (typeof hex === "string") {
        const _hex = hex.replace(/^0x/i, "");
        return fromString(_hex.toLowerCase(), "base16");
    }
    return hex;
}
/**
 * Encode utf-8 string to byte array.
 */
const utf8ToBytes = (s) => fromString(s, "utf8");
/**
 * Concatenate using Uint8Arrays as `Buffer` has a different behavior with `DataView`
 */
function concat(byteArrays, totalLength) {
    const len = byteArrays.reduce((acc, curr) => acc + curr.length, 0);
    const res = new Uint8Array(len);
    let offset = 0;
    for (const bytes of byteArrays) {
        res.set(bytes, offset);
        offset += bytes.length;
    }
    return res;
}

export { concat, hexToBytes, utf8ToBytes };