wallet/Safari Shared/Inpage Provider/utils.js

// ∅ 2024 lil org
// Rewrite of utils.js from trust-web3-provider.

"use strict";

import { Buffer } from "buffer";

class Utils {
    static genId() {
        return new Date().getTime() + Math.floor(Math.random() * 1000);
    }
    
    static flatMap(array, func) {
        return [].concat(...array.map(func));
    }
    
    static intRange(from, to) {
        if (from >= to) {
            return [];
        }
        return new Array(to - from).fill().map((_, i) => i + from);
    }
    
    static hexToInt(hexString) {
        if (hexString === undefined || hexString === null) {
            return hexString;
        }
        return Number.parseInt(hexString, 16);
    }
    
    static intToHex(int) {
        if (int === undefined || int === null) {
            return int;
        }
        let hexString = int.toString(16);
        return "0x" + hexString;
    }
    
    // message: Bytes | string
    static messageToBuffer(message) {
        var buffer = Buffer.from([]);
        try {
            if ((typeof (message) === "string")) {
                buffer = Buffer.from(message.replace("0x", ""), "hex");
            } else {
                buffer = Buffer.from(message);
            }
        } catch (err) {
            console.log(`messageToBuffer error: ${err}`);
        }
        return buffer;
    }
    
    static bufferToHex(buf) {
        return "0x" + Buffer.from(buf).toString("hex");
    }
}

module.exports = Utils;