ひよっこエンジニアが Node のアップデートに立ち向かったら Zod でハマった話
CommonJSからES Modulesへの移行する方法。トップダウンかボトムアップか
Secretlint v7でCommonJS からES Modulesへの移行を行いました。 Secretlint v7.0.0をリリースしました。Pure ESMへの書き直し この記事では、CommonJS(CJS)からES Modules(ESM)への移行を行った経緯と、移行する方法について紹介します。 CJSからESMへの移行は、率直に言えば単調な作業で、メリットが見えにくい作業です。 しかし、将来的にCJSよりもESMが主流になることは間違いないので、移行することは必要です。 移行の作業は、移行方法が決まれば大部分は機械的な書き換えが可能です。 では、実際にどうやって移行したのかを紹介します。 ESMへの移行の影響は依存元へと連鎖する Secretlintのリポジトリはmonorepoになっていて、だいたい40コぐらいのパッケージが含まれています。 そしてパッケージ間で依存関係があ
Architecture of an early stage SAAS | Feelback Blog
IntroductionIn this article I describe a simple architecture for an early stage SAAS. As a solo founder, I report some choices made to launch Feelback, a small-scale SAAS for collecting users signals about any content. This article will cover the technical side of designing and running a simple SAAS. It will also include some details about coding and evolving the initial feature set ready at launc
State of Node.js Performance 2023
The year is 2023 and we’ve released Node.js v20. It’s a significant accomplishment, and this article aims to use scientific numbers to assess the state of Node.js’ performance. All the benchmark results contain a reproducible example and hardware details. To reduce the noise for regular readers, the reproducible steps will be collapsed at the beginning of all sections. This article aims to provide
Practical Guide To Not Blocking The Event Loop
JavaScript runs in a single-threaded environment with an event loop, an architecture that is very easy to reason about. It’s a continuous loop executing incoming work. Said work can schedule more of it for the future. while (hasWorkToDo) { /* Run timers, I/O callbacks, check for incoming connections, and so on... */ doWork(); } Synchronous work runs immediately; asynchronous work runs when there i
Node.js v20 の主な変更点 - 別にしんどくないブログ
2023 年 4 月 18 日にリリースされた Node.js v20 の主な変更点を紹介します。 nodejs.org ファイルのアクセスやプロセスの起動を制限する新しいパーミッションモデル (experimental) --allow-fs-read でファイルの読み込みを許可する --allow-fs-write によるファイル書き込み許可 --allow-child-process による child_process の許可 --allow-worker による Worker Threads の許可 Permission Model の参考記事 V8 11.3 による新しい JavaScript の機能 テストランナー（node:test）が stable に昇格 Single Executable Application JSON の config を使った Blob が必要に
How to process a CSV file five times faster in NodeJs with Rust and Napi rs
How to process a CSV file five times faster in NodeJs with Rust and Napi rsAdded 1 year ago - 15 min read napi.rsnode.jsrust-languagecsv-processingperformance-tunning Intro CSV file Nodejs processing Rust processing Napi rs Conclusion Intro This tutorial will teach us how to process a CSV file in NodeJs with Rust and Napi rs. We will use the Rust programming language to speed up the processing of
Trying Node.js Test Runner
I even wrote my own test runner 11 year ago: gt I personally think Node.js follows the same "minimal core" as JavaScript itself. Thus things like linters, code formatters, and test runners are better made as 3rd party tools. While this was a good idea for a long time, now any language without a standard testing tool seems weird. Deno, Rust, Go - they all have their own built-in test runners. Curre
Node.js compatibility for Cloudflare Workers – starting with Async Context Tracking, EventEmitter, Buffer, assert, and util
Node.js compatibility for Cloudflare Workers – starting with Async Context Tracking, EventEmitter, Buffer, assert, and util03/23/2023 Over the coming months, Cloudflare Workers will start to roll out built-in compatibility with Node.js core APIs as part of an effort to support increased compatibility across JavaScript runtimes. We are happy to announce today that the first of these Node.js APIs –
npm/yarn/pnpm/bunを同じコマンドで扱える ni のzsh実装を書いた
A Complete Guide to Pino Logging in Node.js | Better Stack Community
Pino is a powerful logging framework for Node.js that boasts exceptional speed and comprehensive features. In fact, its impressive performance earned it a default spot in the open-source Fastify web server for logging output. Pino's versatility also extends to its ease of integration with other Node.js web frameworks, making it a top choice for developers looking for a reliable and flexible loggin
Fixing a Memory Leak in a Production Node.js App
Fixing a Memory Leak in a Production Node.js AppJanuary 12th, 2023 — 15 min read A few months ago, I wrote about my migration from Postgres to SQLite. I ended that with a "to be continued" because I had a number of issues related to memory and CPU spikes that I couldn't really explain. For a while I thought it was bugs in LiteFS (which I'm using to get distributed SQLite for my distributed node ap
eslint-cjs-to-esm: CJSをESMへとマイグレーションするツールを書いた
Node.js にプロセスレベルの Permission が入りそうな話 - from scratch
10 best practices to containerize Node.js web applications with Docker | Snyk Blog | Snyk
September 14, 2022: Check out our new and improved cheat sheet for containerizing Node.js web applications with Docker! Are you looking for best practices on how to build Node.js Docker images for your web applications? Then you’ve come to the right place! The following article provides production-grade guidelines for building optimized and secure Node.js Docker images. You’ll find it helpful rega
Simple colored logging for your JavaScript CLI output
I love writing CLI scripts using JavaScript (mostly with deno, zx, or plain node.js). Here's something I add to almost all my scripts: a tiny copy-pasteable way to color the output of success and failure messages without adding external libraries. With a green ✔ and a red ｘ character: console.success = (...args) => console.log("\x1b[32m✔\x1b[0m", ...args); console.failure = (...args) => console.er
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