~javascriptweekly | Issue 696 - Do the (ESLint) Evolution (12)

PLV8: Use JavaScript Functions in PostgreSQL — Did you know you can use JavaScript within Postgres for things like stored procedures and triggers? PLV8 is the extension that makes it happen. PLV8ify adds an extra layer by converting JS/TS files into PLV8 ready SQL.

es-toolkit: A Modern JavaScript Utility Library — Think Lodash but newer, faster, smaller, and with tree shaking and built-in TypeScript support. The reference guide shows off the supported functions so far – it’s not quite as extensive as Lodash, but it’s getting there with the goal being “to achieve full feature parity with Lodash.”

What's Coming Next for ESLint — At eleven years old, ESLint is preparing itself for another eleven years by continuing to evolve into a language-agnostic linter that anyone can write plugins for. The new configuration system introduced in ESLint 9.0 is “just the beginning of significant changes” on the way.

Speeding up the JavaScript Ecosystem: Isolated Declarations — “TypeScript’s new isolated declaration feature is a game changer for sharing code among developers.” The latest in Marvin’s fantastic series about finding performance wins in how we do things in the JS world.

Recreating the THX 'Deep Note' in JavaScript — A fun bit of sound generation with Tone.js. Note that people have reported mixed results on different browsers, but it works for me. Just be careful it doesn’t ▶️ explode your teeth.

Introducing @let in Angular — The new @let syntax extends Angular’s built-in template syntax with a better way to define variables inside component templates.

Building a Hybrid Sign-Up/Subscribe Form with Stripe Elements — A practical guide on how to use custom flows, webhooks, and user metadata to build a single form that automatically subscribes new users using Stripe Elements.

Sneaky React Memory Leaks: How the React Compiler Won’t Save You — While the new and exciting React Compiler can tackle a lot of issues and make most codebases more performant, it pays to be aware of tricky edge cases.

React Flow 12: Create Node-Based Editors & Interactive Diagrams — Part of xyflow, this makes it easy to create node-based UIs where you have interactive components wired together however you choose. There's a Svelte version too.

Croner 8.1: 'Cron' Triggering and Evaluation — Trigger functions to the schedule of your choice using cron syntax. It can also evaluate cron expressions to give you a list of upcoming times.

TinyBase 5.0: A Reactive Data Store for Local-First Apps — A data store that acts as a reactive backend to your apps if you want less headache building out backends. v5.0 includes a new mergeableStore type that can wrap your data as a Conflict-Free Replicated Data Type (CRDT). Homepage.

✂️ Cut Your QA Cycles Down to Minutes with Automated Testing — Are slow test cycles bottlenecking your dev teams' release velocity? With QA Wolf , your organization can run entire test suites in minutes, not days. Plus, get to 80% automated E2E coverage in just 4 months (zero flakes, guaranteed). Schedule a demo.