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pbf

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pbf

a low-level, lightweight protocol buffers implementation in JavaScript

  • 4.0.1
  • latest
  • Source
  • npm
  • Socket score

Version published
Weekly downloads
1.5M
decreased by-6.96%
Maintainers
28
Weekly downloads
 
Created

What is pbf?

The pbf npm package is a low-level library for reading and writing Protocol Buffers (protobuf), a language-neutral, platform-neutral, extensible mechanism for serializing structured data. It is designed to be both efficient in performance and small in size, making it ideal for applications like map data processing in browsers or on servers.

What are pbf's main functionalities?

Reading Protocol Buffers

This code sample demonstrates how to read data from a Protocol Buffers file. It uses the Pbf instance to parse the buffer based on predefined tags and assigns the parsed data to a JavaScript object.

const Pbf = require('pbf');
const { readFileSync } = require('fs');

const buffer = readFileSync('data.pbf');
const pbf = new Pbf(buffer);
const data = pbf.readFields(readData, {});

function readData(tag, data, pbf) {
  if (tag === 1) data.name = pbf.readString();
  else if (tag === 2) data.version = pbf.readVarint();
}

Writing Protocol Buffers

This code sample shows how to write data to a Protocol Buffers file. It creates a new Pbf instance, writes data into it by specifying tags, and then writes the serialized data to a file.

const Pbf = require('pbf');
const { writeFileSync } = require('fs');

const data = { name: 'Example', version: 1 };
const pbf = new Pbf();
writeData(data, pbf);
pbf.finish();

writeFileSync('output.pbf', Buffer.from(pbf.buffer));

function writeData(obj, pbf) {
  pbf.writeStringField(1, obj.name);
  pbf.writeVarintField(2, obj.version);
}

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Package last updated on 08 Jul 2024

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