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multicodec

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multicodec

JavaScript implementation of the multicodec specification


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578K
increased by4.93%
Maintainers
6
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What is multicodec?

The multicodec npm package is a self-describing multiformat, which is useful for identifying the format of a given piece of data. It is used extensively in the IPFS ecosystem to handle various data formats in a consistent manner.

What are multicodec's main functionalities?

Encoding and Decoding

This feature allows you to encode a buffer with a specific codec and decode it to find out the codec used. The `addPrefix` method adds a prefix to the buffer, and the `rmPrefix` method removes it.

const multicodec = require('multicodec');

// Encoding a buffer with a specific codec
const buffer = Buffer.from('hello world');
const encoded = multicodec.addPrefix('raw', buffer);
console.log(encoded);

// Decoding a buffer to find out the codec
const decoded = multicodec.rmPrefix(encoded);
console.log(decoded);

Listing Supported Codecs

This feature allows you to list all the supported codecs in the multicodec package. The `print` property contains a list of all the codecs.

const multicodec = require('multicodec');

// Listing all supported codecs
const codecs = multicodec.print;
console.log(codecs);

Resolving Codec Names and Codes

This feature allows you to resolve codec names to their corresponding codes and vice versa. The `getCodeVarint` method returns the code for a given codec name, and the `getName` method returns the name for a given codec code.

const multicodec = require('multicodec');

// Resolving codec name to code
const code = multicodec.getCodeVarint('dag-pb');
console.log(code);

// Resolving codec code to name
const name = multicodec.getName(0x70);
console.log(name);

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Package last updated on 02 Sep 2021

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