@pefish/js-node-assist
Version:
assistance tool of node
289 lines (288 loc) • 7.55 kB
TypeScript
import BigNumber from "bignumber.js";
export declare enum RoundingMode {
ROUND_UP = 0,// 直接截断，向上取整
ROUND_DOWN = 1,// 直接截断，向下取整
ROUND_CEIL = 2,
ROUND_FLOOR = 3,
ROUND_HALFUP = 4,// 遇到.5的情况时往上近似,就是四舍五入
ROUND_HALFDOWN = 5,// 遇到.5的情况时往下近似
ROUND_HALFEVEN = 6,
ROUND_HALFCEIL = 7,
ROUND_HALFFLOOR = 8,
EUCLID = 9
}
export declare class Calculator {
private data;
constructor(data?: BigNumber | number | string | Calculator);
toString(): string;
/**
* 加
* @param val
* @returns {any}
*/
add(val: string | number | Calculator): Calculator;
/**
* 乘以10的几次方
* @param num
*/
shiftedBy(num: BigNumber | number | string | Calculator): Calculator;
unShiftedBy(num: string | number | Calculator): Calculator;
/**
* 取相反数
* @returns {string}
*/
negated(): Calculator;
/**
* 减
* @param val
* @returns {any}
*/
sub(val: string | number | Calculator): Calculator;
/**
* 乘
* @param val
* @returns {any}
*/
multi(val: string | number | Calculator): Calculator;
/**
* 乘方
* @param val
* @returns {any}
*/
pow(val: BigNumber | number | string | Calculator): Calculator;
/**
* 除
* @param val
* @returns {string}
*/
div(val: string | number | Calculator): Calculator;
/**
* 求余
* @param val
* @returns {string}
*/
mod(val: string | number | Calculator): Calculator;
/**
* 开根号
* @returns {string}
*/
sqrt(): Calculator;
/**
* 是否大于
* @param val
* @returns {boolean}
*/
gt(val: string | number | Calculator): boolean;
/**
* 大于或等于
* @param val
* @returns {boolean}
*/
gte(val: string | number | Calculator): boolean;
/**
* 是否小于
* @param val
* @returns {boolean}
*/
lt(val: string | number | Calculator): boolean;
/**
* 小于或等于
* @param val
* @returns {boolean}
*/
lte(val: string | number | Calculator): boolean;
/**
* 是否相等
* @param val
* @returns {boolean}
*/
eq(val: string | number | Calculator): boolean;
/**
* 保留小数点后几位。默认小数部分最后不带0
* @param decimalRemain
* @param remainMethod {number}
* @returns {string}
*/
remainDecimal(decimalRemain: number, remainMethod?: RoundingMode, withZero?: boolean): Calculator;
/**
* 取绝对值
* @returns {string}
*/
abs(): Calculator;
/**
* 直接取整
* @returns {Number}
*/
toInt(): number;
/**
* 转换为数值
* @returns {Number}
*/
toNumber(): number;
/**
* 转换成BigNumber对象
* @returns {BigNumber}
*/
toBigNumber(): BigNumber;
/**
* 转换成 BigInt 对象
* @returns {BigInt}
*/
toBigInt(): BigInt;
/**
* 转换为二进制字符串
* @returns {string}
*/
toBinString(): Calculator;
/**
* 转换为八进制字符串
* @returns {string}
*/
toOctString(): Calculator;
/**
* 转十进制字符串
* @returns {number}
*/
toDecimalString(): Calculator;
/**
* 转换为十六进制字符串
* @returns {string}
*/
toHexString(): Calculator;
end(): string;
}
export default class StringUtil {
static start(data: BigNumber | number | string | Calculator): Calculator;
/**
* 移除开头几位字符串
* @param num
* @returns {Array}
*/
static removeFirst(src: string, num: number): string;
/**
* 获取小数部分的个数
*/
static decimalCount(src: string): number;
/**
* 加千分号
* @returns {string}
*/
static addThousandSign(src: string): string;
/**
* 移除千分号
* @returns {string}
*/
static removeThousandSign(src: string): string;
/**
* hex string转换为number
* @returns {number}
*/
static hexToNumber(src: string): number;
/**
* '190' --> 'BE'
* @returns {string}
*/
static numberStrToHex(src: string): string;
/**
* 判断此值用于计算时是否具有精度问题
*/
static hasPrecisionIssue(src: string): boolean;
/**
* 移除最后几位字符串
* @param num
* @returns {string}
*/
static removeLast(src: string, num: number): string;
/**
* 获取开头几位
* @param num
* @returns {string}
*/
static getFirst(src: string, num: number): string;
/**
* 获取最后几位
* @param num
* @returns {string}
*/
static getLast(src: string, num: number): string;
/**
* 全部替换(只能简单替换字符串)
* @param regStr
* @param replaceStr
* @returns {string}
*/
static replaceAll(src: string, regStr: string, replaceStr: string): string;
/**
* 从字符串中分类出指定区间的内容
* @param splitStr1
* @param splitStr2
* @returns {{}}
*/
static classify(src: string, splitStr1: string, splitStr2: string): {
name: string;
is: boolean;
index: number;
}[];
static findAll(src: string, regStr: string): {
outputFull: string;
output: string;
index: number;
input: string;
}[];
/**
* 十六进制字符串转化为Buffer。与Buffer.toHexString相反
* @returns {Array}
*/
static hexToBuffer(src: string): Buffer;
/**
* 普通字符串转buffer
* @returns {Buffer}
*/
static toUtf8Buffer(src: string): Buffer;
/**
* 十六进制字符串转化为十进制字符串
* @returns {number|*}
*/
static hexToDecimalString(src: string): string;
/**
* 检查是否是严格的hex数据
* @returns {boolean}
*/
static isStrictHexString(src: string): boolean;
/**
* 清空hex字符串左边或右边的00
* @param typeStr {string} left/right/both
* @returns {string | void | *} 结果不带0x
*/
static clearHexZeroZero(src: string, typeStr: string): string;
/**
* 移除尾随的0
*/
static removeTrailingZeros(src: string): string;
static toArray(src: string, eleLen?: number, arrLen?: number): string[];
static hexStrToBase64(src: string): string;
static base64ToHexStr(src: string, prefix?: boolean): string;
static strToBase64(src: string): string;
static base64ToStr(src: string): string;
static removeLastEnter(src: string): string;
/**
* 移除最后一段字符串
*/
static removeLastStr(src: string, str: string): string;
/**
* 移除开头一段字符串
*/
static removeFirstStr(src: string, str: string): string;
/**
* 移除字符串最后一段。
* @param str
*/
static removeLastByStr(src: string, str: string): string;
static removeFirstByStr(src: string, str: string): string;
static toNoScientificString(src: string): string;
static canCastNumber(src: string): boolean;
static utf8HexStringToString(src: string): string;
static toUtf8HexString(src: string, prefix?: boolean): string;
static toUtf8Uint8Array(src: string): Uint8Array;
static toPretty(src: string): string;
}