oboe

What is oboe?

The oboe npm package is a library for streaming JSON over HTTP. It allows you to parse JSON as it is being received, which can be useful for handling large JSON responses or for real-time data processing.

What are oboe's main functionalities?

Streaming JSON Parsing

This feature allows you to parse JSON data as it is being streamed from an HTTP source. The `node` method is used to handle individual nodes as they are parsed, and the `done` method is called when the entire JSON has been parsed.

const oboe = require('oboe');

oboe('http://example.com/big.json')
  .node('!.*', function(node) {
    console.log('Parsed node:', node);
  })
  .done(function(parsedJson) {
    console.log('Finished parsing:', parsedJson);
  });

Pattern Matching

Oboe allows you to use pattern matching to extract specific parts of the JSON data as it is being parsed. In this example, the `node` method is used to match the `author.name` pattern and log the author's name.

const oboe = require('oboe');

oboe('http://example.com/big.json')
  .node('!author.name', function(name) {
    console.log('Author name:', name);
  });

Error Handling

Oboe provides error handling capabilities to manage issues that may arise during the JSON parsing process. The `fail` method is used to handle any errors that occur.

const oboe = require('oboe');

oboe('http://example.com/big.json')
  .fail(function(error) {
    console.error('Failed to parse JSON:', error);
  });

Other packages similar to oboe

stream-json

The stream-json package is another library for streaming JSON parsing. It provides a more modular approach, allowing you to build a custom pipeline for processing JSON data. Compared to oboe, stream-json offers more flexibility and control over the parsing process.

JSONStream

JSONStream is a library for parsing and stringifying large JSON data streams. It is similar to oboe in that it allows for streaming JSON parsing, but it is more focused on providing a simple and efficient way to handle large JSON data sets.

event-stream

event-stream is a toolkit for working with streams in Node.js. It includes utilities for creating and manipulating streams, including JSON parsing. While not specifically focused on JSON, it provides a versatile set of tools for stream processing, making it a more general-purpose alternative to oboe.

README

Oboe.js helps web applications respond quicker by wrapping http's request-response model with a progressively streamed interface. It glues a transport that sits somewhere between streaming and downloading to a JSON parser that sits somewhere between SAX and DOM. It is small enough to be a micro-library, doesn't have any external dependencies and doesn't care which other libraries you need it to speak to.

Oboe makes it really easy to start using json from a response before the ajax request completes. Or even if it never completes.

Where next?

• Visualise faster web applications through streaming
• Visit the project homepage
• Browse code examples
• Learn the Oboe.js API
• Download the library
• Discuss Oboe.js