simple-base-converter's Introduction

simple-base-converter

master:

Simple math module for base conversion.

Install

npm i simple-base-converter

Usage

Some bases(2, 8, 16, 32, 36, 62) are predefined.

_10To2(num)
_10To8(num)
_10To16(num)
_10To32(num)
_10To36(num)
_10To62(num)
_2To10(num)
_8To10(num)
_16To10(num)
_32To10(num)
_36To10(num)
_62To10(num)

import { _10To2, _2To10 } from "simple-base-converter";

_10To2(100); // "1100100"
_2To10(1100100); // "100"

// Input can be both integer or string number.
_10To2("100"); // "1100100"
_2To10("1100100"); // "100"

Of course you can choose bases freely.
convertBase(num, originalBase, newBase) converts num from originalBase to newBase.
If you set integer to originalBase or newBase, they are automatically converted by using default base 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.

import { convertBase } from "simple-base-converter";

convertBase("20a4", 17, 52); // "3Ag"
convertBase("20a4", "0123456789abcdefg", "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOP"); // "3Ag"

Custom bases are also available.

convertBase(10000, 10, "－・"); // "・－－・・・－－－・－－－－"
convertBase("4649", "0123456789", "零一二三四五六七八九"); // "四**九"

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simple-base-converter's Issues

Exception on some cases

Hi,

For some cases it triggers an exception that I don't understand. Consider the following:

const {convertBase} = require("simple-base-converter");

const num = '9999999999';
const numBase = '0123456789';
const base = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-_';

// value: '9k2-f_'
const base64 = convertBase(num, numBase, base);

// Exception: 'First augument must consist of second augument.'
const convertedBack = convertBase(base64, base, numBase);

console.log(convertedBack)

The last convert back to normal throws an exception when running in node 16.13.

Do you have any idea why this happens?

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