@benev/slate/x/tools/data/base58.js

frontend web stuff

/*

256-bit base58 ids look like this:

    9X1D9rdkDgRdykzmogNcxfopRc7TnbS869ow1E2ehCFS
    AmRKyNfq6jhhsd9qda1Y6rAVS2NLUqyTUvfcB2wUiiAC
    8skYcqBAXsejDcJzsZMo19PErt43DHP3bykaXBtMvdu

*/
import { Hex } from "./hex.js";
import { Bytes } from "./bytes.js";
const base = 58;
const characters = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
export const Base58 = Object.freeze({
    string(bytes) {
        let intVal = BigInt("0x" + Hex.string(bytes));
        let encoded = "";
        while (intVal > 0) {
            const remainder = intVal % BigInt(base);
            intVal = intVal / BigInt(base);
            encoded = characters[Number(remainder)] + encoded;
        }
        for (const byte of bytes) {
            if (byte === 0)
                encoded = characters[0] + encoded;
            else
                break;
        }
        return encoded;
    },
    bytes(string) {
        let intVal = BigInt(0);
        for (const char of string) {
            const index = characters.indexOf(char);
            if (index === -1)
                throw new Error(`Invalid character '${char}' in base58 string`);
            intVal = intVal * BigInt(base) + BigInt(index);
        }
        let hex = intVal.toString(16);
        if (hex.length % 2 !== 0)
            hex = "0" + hex;
        const bytes = Hex.bytes(hex);
        let leadingZeroes = 0;
        for (const char of string) {
            if (char === characters[0])
                leadingZeroes++;
            else
                break;
        }
        const decoded = new Uint8Array(leadingZeroes + bytes.length);
        decoded.set(bytes, leadingZeroes);
        return decoded;
    },
    random(count = 32) {
        return this.string(Bytes.random(count));
    },
});
//# sourceMappingURL=base58.js.map