rev-hash

What is rev-hash?

The rev-hash npm package is used to generate a hash from a file or string content. This is particularly useful for cache busting in web development, where you need to ensure that users get the latest version of a file.

What are rev-hash's main functionalities?

Generate hash from file content

This feature allows you to generate a hash from the content of a file. You read the file into a buffer and then pass that buffer to the rev-hash function to get the hash.

const revHash = require('rev-hash');
const fs = require('fs');

const buffer = fs.readFileSync('path/to/file');
const hash = revHash(buffer);
console.log(hash);

Generate hash from string content

This feature allows you to generate a hash from a string. You simply pass the string to the rev-hash function to get the hash.

const revHash = require('rev-hash');

const content = 'Hello, world!';
const hash = revHash(content);
console.log(hash);

Other packages similar to rev-hash

hasha

The hasha package is a versatile hashing library that supports multiple hashing algorithms like MD5, SHA-1, SHA-256, etc. It can hash strings, buffers, and even streams. Compared to rev-hash, hasha offers more flexibility in terms of hashing algorithms and input types.

crypto

The crypto package is a built-in Node.js module that provides cryptographic functionality, including a wide range of hash algorithms. It is more complex and powerful than rev-hash, offering more control over the hashing process but requiring more setup.

md5-file

The md5-file package is specifically designed to generate MD5 hashes from files. It is similar to rev-hash in that it focuses on file content hashing, but it is limited to the MD5 algorithm.

README

rev-hash

Create a hash for file revving

It will create a md5 hash from the input buffer and slice it to 10 characters, which is unique enough for this purpose. If you think you need a different hash algorithm or a longer hash, you're wrong.

Install

$ npm install --save rev-hash

Usage

var fs = require('fs');
var revHash = require('rev-hash');
var buffer = fs.readFileSync('unicorn.png');

revHash(buffer);
//=> 'bb9d8fe615'

License

MIT © Sindre Sorhus