Reviving an abandoned react component for the opensource : itinerary

By LiBePosted on Sunday 31 July 2022Sunday 31 July 2022Cat G33k, ProgrammesLeave a comment

Hey, Do you feel like you would better opensource an abandoned project from your company rather than throwing it to the trash ? It's like recycling outdated but viable products from the supermarket : it is still valuable but can't be sold anymore... That project has been abandoned 3 years ago already, the product owner… Read More »

Hybrid spring-boot : webflux and webmvc

By LiBePosted on Thursday 30 June 2022Thursday 30 June 2022Cat G33k, ProgrammesLeave a comment

I know some of you think about getting to speead with your api.How can one have a java api that can scale up without affecting more costs and machines ? You may have looked into reactive apis and WebFlux recently,...but you wonder how you can successfully convert your apis with a reversible approach. Suppose you… Read More »

Websocket : how to forward traffic in Node.js

By LiBePosted on Tuesday 31 May 2022Tuesday 31 May 2022Cat G33k, ProgrammesLeave a comment

Many solutions exist to serve remote content on proxies : webpack-dev-server, next.js, http-proxy, or just my own local-traffic.While these solutions offer an efficient way to route http traffic, they sometimes have support for websocket, which correspond to a different protocol (tcp messages but not exactly http) The client only sends a http request once, then… Read More »

next.js : build a web filter registry

By LiBePosted on Saturday 30 April 2022Saturday 30 April 2022Cat G33k, ProgrammesLeave a comment

next.js is a framework that belongs to the page generator frameworks, it is getting more and more popular every day,but it is also a server application framework, and can be used to orchestrate interactions. If you are moving away from java and spring servers like me, you are certainly going to wonder how you can… Read More »

Build a live editor for your design system

By LiBePosted on Thursday 31 March 2022Thursday 31 March 2022Cat G33k, ProgrammesLeave a comment

Using a design system is a work for UI engineers, not for OS specialists or SRE teams.Tools should exist to create interfaces without having to install anything.Web editors should be helpful : they should provide suggestions as you type, and report mistakes, problems or errors.You should be able to test your work immediately, like in… Read More »

jest : how to cheat with time

By LiBePosted on Monday 28 February 2022Monday 28 February 2022Cat G33k, ProgrammesLeave a comment

Of course I could spend some time mirroring the jest docsite, even though the description is comprehensive and the examples are relevant. (https://jestjs.io/docs/timer-mocks) jest.useFakeTimers(); jest.spyOn(global, 'setTimeout'); Once you have this code, you can freeze the time and execute tasks that should have been deferred to later in real conditionsYou can even advance in time by… Read More »

Use typescript … while exporting “.mjs” modules

By LiBePosted on Monday 31 January 2022Monday 31 January 2022Cat G33k, ProgrammesLeave a comment

Typescript offers great safety against data corruption, it verifies every part of the data flow in your app and compares it against the libraries signature.If anything seems wrong, it asks you to double check at compile time.Ecmascript modules is probably the convergence of frontend and backend javascript : it is seamless across different environments and… Read More »

Jenkinsfile : the auto-upgrading project

By LiBePosted on Thursday 30 December 2021Thursday 30 December 2021Cat G33k, ProgrammesLeave a comment

A dream project is when your codebase runs on the latest and safest version of your libraries. No need to worry about deprecation, adaptation, breaking changes, or sticking with legacy tools. Today GitHub/GitLab tend to make it easier with assisted upgrades : dependabot, security alerts, all you have to do is to activate it and… Read More »

jscodeshift, run programmatically

By LiBePosted on Tuesday 30 November 2021Tuesday 30 November 2021Cat G33k, ProgrammesLeave a comment

jscodeshift is a great tool for running migrations on frontend codebase. It saves days of team syncup, cross team collaboration and prioritization,my team is looking at building a tool to automatically upgrade applications that consume our libraries, instead of giving an upgrade doc and deadlines.the jscodeshift is a command line interface and works the same… Read More »

WebAssembly in javascript : load and run with ease

By LiBePosted on Friday 29 October 2021Friday 29 October 2021Cat G33k, ProgrammesLeave a comment

WebAssembly libraries looks like unicorns in the sky, but they need to be prepared to be used efficiently ;most of the time, you start by naively pass values in functions before realizing that only pointers are read. const webAssemblyModule = await WebAssembly.compile(wasmData);const instance = await WebAssembly.instantiate(webAssemblyModule,{env: {memory: newMemory}, exports: { memory: newMemory }});instance.exports.foo("bar"); // but… Read More »