@types/long

What is @types/long?

The @types/long package provides TypeScript type definitions for the long.js library, which is a comprehensive library for working with 64-bit integers. These type definitions enable TypeScript developers to use long.js in their projects with the benefits of TypeScript's static type checking. The long.js library itself allows for the representation, manipulation, and serialization of 64-bit integers, which are not natively supported in JavaScript due to its use of IEEE 754 floating-point numbers for all numeric values.

What are @types/long's main functionalities?

Creating long integers

This feature allows the creation of 64-bit integers. The code sample demonstrates how to create a long integer with the maximum signed positive value.

import * as Long from 'long';
let longVal = new Long(0xFFFFFFFF, 0x7FFFFFFF);

Arithmetic operations

This feature enables arithmetic operations such as addition, subtraction, multiplication, and division on 64-bit integers. The code sample shows how to add two Long instances.

import * as Long from 'long';
let longOne = Long.fromInt(1);
let longTwo = Long.fromInt(2);
let sum = longOne.add(longTwo);

Comparison

This feature allows for the comparison of long integers, including equality checks and relational comparisons. The code sample demonstrates checking if two Long instances are equal.

import * as Long from 'long';
let longOne = Long.fromInt(1);
let longTwo = Long.fromInt(2);
let isEqual = longOne.equals(longTwo);

Serialization

This feature supports the serialization of long integers to strings, which is useful for storage or transmission. The code sample shows how to serialize a Long instance to a string.

import * as Long from 'long';
let longVal = Long.fromInt(123456);
let serialized = longVal.toString();

Other packages similar to @types/long

bignum

The bignum package provides arbitrary-precision arithmetic operations. Unlike @types/long, which is focused on 64-bit integers, bignum supports numbers of any size, making it more flexible for applications requiring large number computations beyond 64 bits.

big-integer

big-integer is another library for arbitrary-precision integer arithmetic. Similar to bignum, it offers more flexibility than @types/long for operations on very large integers. However, it might not be as optimized for 64-bit operations specifically.

README

Installation

npm install --save @types/long

Summary

This package contains type definitions for long.js (https://github.com/dcodeIO/long.js).

Details

Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/long.

Additional Details

• Last updated: Tue, 26 Apr 2022 19:31:52 GMT
• Dependencies: none
• Global values: Long

Credits

These definitions were written by Peter Kooijmans.