@pefish/js-node-assist/lib/number.js

assistance tool of node

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.EndianType = void 0;
const bignumber_js_1 = __importDefault(require("bignumber.js"));
class NumberUtil {
    /**
     * 转换成BigNumber对象
     * @returns {BigNumber}
     */
    static toBigNumber(src) {
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e+9
        });
        return new BN(src);
    }
    /**
     * 转换成 BigInt 对象
     * @returns {BigNumber}
     */
    static toBigInt(src) {
        return BigInt(src);
    }
    /**
     * 转换为二进制字符串
     * @returns {string}
     */
    static toBinString(src) {
        return src.toString(2);
    }
    /**
     * 转换为八进制字符串
     * @returns {string}
     */
    static toOctString(src) {
        return src.toString(8);
    }
    /**
     * 转换为十六进制字符串
     * @returns {string}
     */
    static toHexString(src) {
        return src.toString(16);
    }
    // 转成int类型，直接溢出截取
    static toInt(src) {
        return parseInt(src.toString(10), 10);
    }
    // number写入字节集
    static toBuffer(src, endian = EndianType.BigEndian) {
        const buf = Buffer.alloc(8);
        if (endian === EndianType.BigEndian) {
            buf.writeDoubleBE(src, 0);
        }
        else if (endian === EndianType.LittleEndian) {
            buf.writeDoubleLE(src, 0);
        }
        else {
            throw new Error(`endian error`);
        }
        return buf;
    }
    static toNoScientificString(src) {
        const BN = bignumber_js_1.default.clone({
            EXPONENTIAL_AT: 1e+9
        });
        const num1 = new BN(src);
        return num1.toString();
    }
}
exports.default = NumberUtil;
var EndianType;
(function (EndianType) {
    EndianType[EndianType["BigEndian"] = 0] = "BigEndian";
    EndianType[EndianType["LittleEndian"] = 1] = "LittleEndian";
})(EndianType || (exports.EndianType = EndianType = {}));
//# sourceMappingURL=number.js.map