JavaScript
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JS monorepos in prod 5: merging Git repositories and preserve commit history
Categories: DevOps & SRE, Node.js | Tags: Bash, DevOps, Git, GitHub, JavaScript, Packaging, GitOps, Monorepo
At Adaltas, we maintain several open-source Node.js projects organized as Git monorepos and published on NPM. We shared our experience to work with Lerna monorepos in a set of articles: Part…
May 21, 2021
Bridging the DBnomics Swagger/OpenAPI schema with GraphQL
Categories: DevOps & SRE, Front End | Tags: Data Engineering, GraphQL, JAMstack, JavaScript, REST, Node.js, Schema
While redacting a long and fastidious document today, I came across DBnomics, an open platform federating economic datasets. Browsing its website and APIs, I found their OpenAPI schema (aka Swagger…
By David WORMS
Apr 8, 2021
JS monorepos in prod 3: commit enforcement and changelog generation
Categories: DevOps & SRE, Front End | Tags: Git, JavaScript, Unit tests, CI/CD, Monorepo, Node.js, Release and features
Conventional Commits introduces a structured format for commit messages. It standardizes the messages among all the contributors. This makes them more readable and easy to automate. It simplifies the…
By David WORMS
Feb 2, 2021
JS monorepos in prod 2: project versioning and publishing
Categories: DevOps & SRE, Front End | Tags: Git, JavaScript, Unit tests, CI/CD, GitOps, Monorepo, Node.js, Release and features
One great advantage of a monorepo is to maintain coherent versions between packages and to automatize the version creation and the publication of packages. This article covers the versioning and…
By David WORMS
Jan 11, 2021
JS monorepos in prod 1: project initialization
Categories: DevOps & SRE, Front End | Tags: Git, JavaScript, GitOps, Monorepo, Node.js, Release and features
Every project journey begins with the step of initialization. When your overall project is composed of multiple projects, it is tempting to create one Git repository per project. In Node.js, a project…
By David WORMS
Jan 5, 2021
Plugin architecture in JavaScript and Node.js with Plug and Play
Categories: Front End, Node.js | Tags: Asynchronous, DevOps, JavaScript, Programming, Agile, Open source, Release and features
Plug and Play helps library and application authors to introduce a plugin architecture into their code. It simplifies complex code execution with well-defined interception points, also called hooks…
By David WORMS
Aug 28, 2020
Gatsby.js, React and GraphQL for documentation websites
Categories: Adaltas Summit 2018, Front End | Tags: Gatsby, GraphQL, HTTP, JAMstack, JavaScript, Markdown, React.js, SEO, API, GitOps, Node.js
In the last few months, I have started to redesign some of our Open Source project websites. This includes the websites of the Node.js CSV project, the Node.js HBase client and the Nikita project, our…
By David WORMS
Apr 1, 2019
Native modules for Node.js with N-API
Categories: Adaltas Summit 2018, Front End | Tags: C++, JavaScript, Kerberos, NPM, Node.js
How to create native modules for Node.js? How to use N-API, the future of native addons development? Writing C/C++ addon is a useful and powerful feature of the Node.js runtime. Let’s explore them…
Dec 12, 2018
TensorFlow on Spark 2.3: The Best of Both Worlds
Categories: Data Science, DataWorks Summit 2018 | Tags: Mesos, YARN, C++, CPU, GPU, JavaScript, Tuning, Spark, Keras, Kubernetes, Machine Learning, Python, TensorFlow
The integration of TensorFlow With Spark has a lot of potential and creates new opportunities. This article is based on a conference seen at the DataWorks Summit 2018 in Berlin. It was about the new…
By Yliess HATI
May 29, 2018
EclairJS - Putting a Spark in Web Apps
Categories: Data Engineering, Front End | Tags: JavaScript, Jupyter, Spark
Presentation by David Fallside from IBM, images extracted from the presentation. Introduction Web Apps development has moved from Java to NodeJS and Javascript. It provides a simple and rich…
By David WORMS
Jul 17, 2016
Tutorial for creating and publishing a new Node.js module
Categories: Front End | Tags: CoffeeScript, GitHub, JavaScript, Learning and tutorial, License, Mocha, NPM, Travis CI, Unit tests, Node.js
In this tutorial, I provide complete instructions for creating a new Node.js module, writing the code in coffee-script, publishing it on GitHub, sharing it with other Node.js fellows through NPM…
By David WORMS
Dec 3, 2013
Crawl you website including login form with Phantomjs
Categories: Front End | Tags: CoffeeScript, JavaScript, Mocha, Unit tests, Node.js
With PhantomJS, we start a headless WebKit and pilot it with our own scripts. Said differently, we write a script in JavaScript or CoffeeScript which controls an Internet browser and manipulates the…
By David WORMS
Nov 27, 2013
Catch 'uncaughtException' error in your mocha test
Categories: Node.js | Tags: DevOps, JavaScript, Mocha, Unit tests
This isn’t the first time I faced this situation. Today, I finally found the time and energy to look for a solution. In your mocha test, let’s say you need to test an expected “uncaughtException…
By David WORMS
Oct 27, 2013
Asynchronous array iteration in Node.js with Each
Categories: Node.js | Tags: Asynchronous, CoffeeScript, JavaScript, Release and features
Control flow in Node.js is the sort of library for which almost all the developers have created and publish their own libraries. They usually aim at reducing spaghetti codes made of deep callbacks. I…
By David WORMS
Jul 18, 2012
Java versus JS fun, a quote from the Node.js mailing list
Categories: Node.js | Tags: Java, JavaScript, Node.js
I just read that one on the mailing list. I found it relevant enough to share it with those who did not subscribe to it: First Lothar Pfeiler: I still wonder, if it’s cool to have such a big…
By David WORMS
Feb 23, 2012
A fresh look at testing Node.js projects: Mocha, Should and Travis
Categories: DevOps & SRE, Node.js | Tags: DevOps, JavaScript, Mocha, Unit tests, CI/CD, Node.js
Today, I finally decided to spend some time around Travis. It’s been a few weeks since that little green image on top of many GitHub homepages has been buzzing me. Well, to be totally honest, this isn…
By David WORMS
Feb 19, 2012
Coffee script, how do I debug that damn js line?
Categories: Hack, Node.js | Tags: CoffeeScript, Debug, JavaScript, Node.js
Update April 12th, 2012: Pull request adding error reporting to CoffeeScript with line mapping Chances are that, if you code in CoffeeScript, you often find yourself facing a JavaScript exception…
By David WORMS
Feb 15, 2012
Announcing Mecano, a set of functions for system deployment
Categories: DevOps & SRE, Node.js | Tags: Automation, CoffeeScript, Infrastructure, JavaScript, Open source
Update July 2016, Mecano is now renamed Nikita. We are releasing Node Mecano on GitHub which gather common functions used while deploying systems. The idea was to group those functions into a…
By David WORMS
Feb 12, 2012
MapReduce introduction
Categories: Big Data | Tags: MapReduce, Big Data, Java, JavaScript
Information systems have more and more data to store and process. Companies like Google, Facebook, Twitter and many others store astronomical amounts of information from their customers and must be…
By David WORMS
Jun 26, 2010
Node.js, JavaScript on the server side
Categories: Front End, Node.js | Tags: HTTP, JavaScript, Server, Node.js
Waiting for the Next Big Language (NBL for Next Big Language), this is now 3 years or more since I predict to my customers a bright future for JavaScript as a programming language for server…
By David WORMS
Jun 12, 2010