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Introducing Enhanced Alert Actions and Triage Functionality
Socket now supports four distinct alert actions instead of the previous two, and alert triaging allows users to override the actions taken for all individual alerts.
stream-transform
Advanced tools
Package description
The stream-transform package is a simple and powerful tool for transforming data in Node.js streams. It allows you to easily modify data as it passes through a stream, making it highly useful for tasks such as data manipulation, filtering, and aggregation in real-time data processing applications.
Synchronous Transformation
This feature allows for synchronous data transformation within a stream. The provided code sample demonstrates how to read data from a CSV file, transform each record by joining its elements with a space, and then output the transformed data.
const transform = require('stream-transform');
const transformer = transform(function(record, callback){
setTimeout(function(){
callback(null, record.join(' ') + '\n');
}, 500);
}, {parallel: 5});
require('fs').createReadStream('/path/to/source.csv').pipe(transformer).pipe(process.stdout);
Asynchronous Transformation
This feature supports asynchronous transformation of stream data. The code sample shows how to asynchronously convert each piece of data to uppercase before passing it through the stream.
const transform = require('stream-transform');
const transformer = transform(function(record, callback){
process.nextTick(function(){
callback(null, record.toUpperCase());
});
});
require('fs').createReadStream('/path/to/source.txt').pipe(transformer).pipe(process.stdout);
Through2 is a tiny wrapper around Node.js streams.Transform that makes it easier to create transform streams. It is similar to stream-transform in providing a simple API for data transformation but differs in its implementation and customization options.
Event-stream is a toolkit for working with Node.js streams in a functional programming style, offering a variety of utilities for creating, combining, and consuming streams. While it provides more general stream manipulation capabilities, it shares the ability to transform stream data with stream-transform.
Readme
Part of the CSV module, this project is a simple object
transformation framework. It implements the Node.js stream.Transform
API.
It also provides a simple callback-based API for convenience.
It is both extremely easy to use and powerful.
Documentation for the "csv-parse" package is available here.
Refer to the project webpage for an exhaustive list of options and some usage examples.
The module is built on the Node.js Stream API. For the sake of simplify, a simple callback API is also provided. To give you a quick look, here's an example of the callback API:
var transform = require('stream-transform');
input = [ [ '1', '2', '3', '4' ], [ 'a', 'b', 'c', 'd' ] ];
transform(input, function(data){
data.push(data.shift());
return data.join(',')+'\n';
}, function(err, output){
output.should.eql([ '2,3,4,1\n', 'b,c,d,a\n' ]);
});
Tests are executed with mocha. To install it, simple run npm install
followed by npm test
. It will install mocha and its dependencies in your
project "node_modules" directory and run the test suite. The tests run
against the CoffeeScript source files.
To generate the JavaScript files, run npm run coffee
.
The test suite is run online with Travis against the versions 0.10, 0.11 and 0.12 of Node.js.
FAQs
Object transformations implementing the Node.js `stream.Transform` API
The npm package stream-transform receives a total of 1,367,810 weekly downloads. As such, stream-transform popularity was classified as popular.
We found that stream-transform demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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Product
Socket now supports four distinct alert actions instead of the previous two, and alert triaging allows users to override the actions taken for all individual alerts.
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