@signumjs/util/out/convertDecStringToHexString.js

Useful utilities and tools for building Signum Network applications

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.convertDecStringToHexString = void 0;
/**
 Original work Copyright (c) 2020 Burst Apps Team
 */
require("./internal/padStartPolyfill");
const bignumber_js_1 = __importDefault(require("bignumber.js"));
const twosComplementBinary_1 = require("./internal/twosComplementBinary");
/**
 * Arbitrary length decimal to hexadecimal conversion
 *
 * >  Negative numbers are expressed as Two's Complement (https://en.wikipedia.org/wiki/Two%27s_complement)
 *
 * Credits to AJ ONeal for the two's complements stuff
 * https://coolaj86.com/articles/convert-decimal-to-hex-with-js-bigints/
 *
 * @param decimal A decimal string or BigNumber representation
 * @param padding If set the hex string will be padded to given number, 8 or 16 or more
 * @return A hexadecimal string
 *
 * @category conversion
 */
const convertDecStringToHexString = (decimal, padding = 2) => {
    let bn = typeof decimal === 'string' ? new bignumber_js_1.default(decimal) : decimal;
    if (bn.isNaN()) {
        throw new Error(`Invalid decimal argument: [${decimal}] - Expected a valid decimal value`);
    }
    if (padding < 0) {
        throw new Error(`Invalid padding argument: [${padding}] - Expected a positive value`);
    }
    const isNegative = bn.lt(0);
    if (isNegative) {
        bn = (0, twosComplementBinary_1.twosComplementBinary)(bn);
    }
    const hex = bn.toString(16);
    const padSize = Math.ceil(hex.length / padding);
    // @ts-ignore
    return hex.padStart(padSize * padding, isNegative ? 'f' : '0');
};
exports.convertDecStringToHexString = convertDecStringToHexString;
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