query-string - Parse and stringify URL query strings

•    Javascript

---

🔥 Want to strengthen your core JavaScript skills and master ES6? I would personally recommend this awesome ES6 course by Wes Bos. You might also like his React course.Parse a query string into an object. Leading ? or # are ignored, so you can pass location.search or location.hash directly.

browser querystring query string qs param parameter url uri parse stringify encode decode

string.js - Extra JavaScript string methods.

•    Javascript

---

string.js, or simply S is a lightweight (< 5 kb minified and gzipped) JavaScript library for the browser or for Node.js that provides extra String methods. Originally, it modified the String prototype. But I quickly learned that in JavaScript, this is considered poor practice.Personally, I prefer the cleanliness of the way code looks when it appears to be native methods. i.e. when you modify native JavaScript prototypes. However, if any app dependency required string.js, then the app's string prototype would be modified in every module. This could be troublesome. So I settled on creating a wrapper a la jQuery style. For those of you prototype hatin' fools, there is the method extendPrototype().

string strings string.js stringjs s csv html entities parse tags strip trim encode decode escape unescape

hashids

•    Javascript

---

A small JavaScript library to generate YouTube-like ids from numbers. Use it when you don't want to expose your database ids to the user.

hashids database-ids ids hash encoding npm-package node hashid youtube bitly obfuscate encode decode encrypt decrypt

node-jwt-simple - JWT(JSON Web Token) encode and decode module for node.js

•    Javascript

---

JWT(JSON Web Token) encode and decode module for node.js. By default the algorithm to encode is HS256.

jwt encode decode

jose - "JSON Web Almost Everything" - JWA, JWS, JWE, JWT, JWK, JWKS with no dependencies using runtime's native crypto in Node

•    Javascript

---

"JSON Web Almost Everything" - JWA, JWS, JWE, JWT, JWK, JWKS with no dependencies using runtime's native crypto in Node.js, Browser, Cloudflare Workers, Electron, and Deno. The test suite utilizes examples defined in RFC7520 to confirm its JOSE implementation is correct.

verify jwt node browser jose validate jsonwebtoken sign jwk jwe jws jwa encrypt decrypt jwks deno cloudflare-workers cloudflare compact decode detached ec ecdsa eddsa electron embedded flattened general isomorphic json-web-token oct okp payload pem pkcs8 rsa secp256k1 signature spki universal webcrypto workers x509

protocol-buffers - Protocol Buffers for Node.js

•    Javascript

---

See the Google Protocol Buffers docs for more information about the available types etc.Since v4 you can now compile your schemas to a JavaScript file you can require from Node. This means you do not have runtime parse the schemas, which is useful if using in the browser or on embedded devices. It also makes the dependency footprint a lot smaller.

protobuf protocol buffers protocolbuffers encode decode google serialize parse levelup encodings encoding

flac.js - FLAC decoder in JavaScript

•    Javascript

---

The Free Lossless Audio Codec (FLAC) is a widely used lossless audio codec, which means that the audio is compressed without any loss of quality. A decoded FLAC stream is bit-for-bit identical to the original uncompressed audio file. The JavaScript decoder was ported from the FFMpeg project and the demuxer is based on the original FLAC documentation. flac.js uses the Aurora audio framework by ofmlabs to facilitate decoding and playback.

audio av aurora.js aurora decode

node-lame - Node.js native bindings to libmp3lame & libmpg123

•    C++

---

For all your async streaming MP3 encoding/decoding needs, there's node-lame! This module hooks into libmp3lame, the library that the lame command uses, to provide Encoder and Decoder streams to NodeJS.node-lame comes bundled with its own copy of libmp3lame and libmpg123, so there's no need to have them installed on your system.

lame mpg123 mp3 mpeg mpg encode decode

Polar Sonic Link

•    

---

Decodes Polar HRM data into XML using the SonicLink interface and a microphone.

cycling decode hrm polar running soniclink

METAR.NET Decoder

•    DotNet

---

Project libraries used to decode airport METAR weather information into adequate data types, change them and back, create resulting METAR information string. Moreover, project used to download METAR by ICAO airport code is included.

atis decode metar silverlight-3 speci taf

node-binary - Unpack multibyte binary values from buffers and streams

•    Javascript

---

Unpack multibyte binary values from buffers and streams. You can specify the endianness and signedness of the fields to be unpacked too.This module is a cleaner and more complete version of bufferlist's binary module that runs on pre-allocated buffers instead of a linked list.

binary decode endian unpack signed unsigned

mp3.js - A JavaScript MP3 decoder for Aurora.js

•    Javascript

---

MP3.js is a refactored version of JSMad designed to run in the Aurora.js audio framework. It supports all of the features of JSMad and is released under the same GPLv2 license. The code was reorganized a bit, and now uses all typed arrays for decoding at better performance. MP3.js adds support for layer I and II to the existing support for layer III. It also supports free bitrate streams, and improves performance thanks to the use of typed arrays.

audio av aurora.js aurora decode

base62js - Base62 Encoding JavaScript implementation

•    JQuery

---

Base62 Encoding JavaScript implementation

jquery-plugin base62 encode decode base64

bech32 - Bech32 encoding / decoding

•    Javascript

---

A BIP173 compatible Bech32 encoding/decoding library.

bech32 bitcoin base32 encoding decoding crypto crytography decode encode

bs58check - A straight forward implementation of base58check extending upon bs58.

•    Javascript

---

A straight forward implementation of base58check extending upon bs58.

bitcoin base58 base58check bitcoinjs base58-check checksum sha256 base bs58 check decode decoding encode encoding litecoin

wif - Bitcoin Wallet Import Format JS encoding/decoding module

•    Javascript

---

Bitcoin Wallet Import Format (WIF) decoding/encoding module

bitcoin base58 base58check decode decoding encoding encode key private wif

base-x - Encode/decode any base

•    Javascript

---

Fast base encoding / decoding of any given alphabet using bitcoin style leading zero compression.See below for a list of commonly recognized alphabets, and their respective base.

bitcoin base58 base encoding decoding alphabet base-x base62 base64 crypto crytography decode encode

bs58 - Base58 encoding/decoding for Bitcoin

•    Javascript

---

JavaScript component to compute base 58 encoding. This encoding is typically used for crypto currencies such as Bitcoin.Note: If you're looking for base 58 check encoding, see: https://github.com/bitcoinjs/bs58check, which depends upon this library.

base58 bitcoin crypto crytography decode decoding encode encoding litecoin

jsontokens-js - Library for encoding, decoding, and verifying JSON Web Tokens (JWTs) in node.js

•    Javascript

---

Library for encoding, decoding, and verifying JSON Web Tokens (JWTs) in node.js

jwt json web token encode decode verify ecdsa secp256k1 ec elliptic curve signature sign

key-encoder-js - Library for encoding and decoding ecdsa private keys and converting between formats

•    Javascript

---

To get started, first define your key encoder and raw private/public keys.As shown above, there is built in support for SECP256k1 (the curve Bitcoin uses), but you can pass in your own curve parameters for any curve you'd like.

elliptic elliptic-curve asn pem der ecdsa crypto cryptography private key encode decode secp256k1 bitcoin curve private-key private-keys public-key public-keys keys ecdsa-key ecdsa-keys key-converter convert-keys key-format key-formatter format-keys key-encoder encode-keys