How to Fix 'command not found' Error After npm install --global in asdf Environment

asdf is a very convenient version management tool, but when globally installing commands with npm install --global, the path may not be available and 'command not found' may appear. This article explains the cause and the simple solution using the asdf reshim command.

[atom-ternjs] Solution for 'Failed to find plugin node-express'

Fixing atom-ternjs's 'Failed to find plugin node-express' error by installing the tern-node-express plugin.

avn: Automatically Switch Node.js Versions

Set up avn to automatically switch Node.js versions from a .node-version file when you cd into a project.

[AWS Lambda] We recommend npm install serverless --global to reduce node_modules file size

Global-installing Serverless Framework cut the AWS Lambda deployment .zip by about 10 MiB.

[Node.js] base62-node Was Renamed to base62.js

base62-node was renamed to base62.js, and the API moved to a createConverter() style.

[JavaScript] java.lang.ArithmeticException: Non-terminating decimal expansion; no exact representable decimal result

Fixing bigdecimal.js's repeating-decimal divide error by passing scale and RoundingMode.

[JavaScript][BigDecimal] java.lang.RuntimeException: Unknown call signature for obj = new java.math.BigDecimal: object

bigdecimal.js throws `Unknown call signature` when given a non-numeric value, so validate arguments first.

java.io.IOException: Missing root object specification in trailer Error with easy-pdf-merge

Working around a PDFBox bug in the easy-pdf-merge npm package by using a maintained fork.

[JavaScript] fast-safe-stringify is Convenient for Preventing TypeError: Converting circular structure to JSON

Use fast-safe-stringify to serialize circular references as [Circular] and avoid JSON.stringify TypeErrors.

github-changes Can Auto-Generate CHANGELOG.md from Commit Messages

How to use github-changes to auto-generate CHANGELOG.md from commit messages, with a real-world PR example.

Default Values for npm @google-cloud/bigquery Retry Options autoRetry and maxRetries

Default values of autoRetry and maxRetries in @google-cloud/bigquery, with sample overrides.

Greenkeeper service that automatically runs npm update & creates pull requests is convenient

Setup notes for Greenkeeper, which opens automated npm update pull requests on your GitHub repositories.

Environment Setup Steps to Introduce Lint to Sass (.scss) with gulp-scss-lint

How to lint .scss files with gulp-scss-lint and the scss-lint gem, wired into a gulp task.

[Node.js] Run Lint Before git commit with husky + lint-staged

Setting up husky and lint-staged with 'npx mrm lint-staged' to run Lint automatically on git pre-commit.

Configuration to Continue Using husky v4 Without Upgrading to husky v5

How to stay on husky v4 by pinning it via npm install and ignoring 5.x updates in Dependabot.

How to Install CoffeeScript

Install nvm and Node.js, then run npm install -g coffee-script to get CoffeeScript up and running.

How to check Ionic Framework version

How to check the Ionic Framework main and CLI versions with npm info, ionic --version, and package.json.

[JavaScript] Detecting Hyphens and Dashes with Regular Expressions Using unicode-regex + Dash_Punctuation

Detect the many kinds of hyphen and dash characters at once by combining unicode-regex with the Dash_Punctuation category.

[JavaScript] Median Calculation Sample Code and Math.js Usage Examples

Compute the median in JavaScript with Math.js's math.median, or hand-written ES5 / ES6 functions.

[JavaScript] Use unicode-substring for Extracting Parts of Strings Containing Unicode

Why substring breaks surrogate pairs — and how the unicode-substring package slices Unicode strings safely.

Convert JSON to CSV with json2csv [JavaScript/Node.js]

Sample Node.js code for converting JSON to CSV with json2csv, without writing loops yourself.

[Mac] How to Install Node.js and npm [Homebrew]

Installing Node.js via Homebrew and npm via the curl-based install.sh on macOS.

[Node.js] Using node-wkhtmltopdf

How to install wkhtmltopdf via Homebrew so you can use node-wkhtmltopdf from Node.js.

[Node.js] How to resolve Error: Cannot find module 'express'

Fixing Node.js Cannot find module 'express' by reinstalling dependencies with npm install -d.

[Node.js] Sample code to get href values with cheerio

You need to chain .find('a') before .attr('href') to read an anchor's href with cheerio.

[Node.js] How to Fix Error: spawn ENOENT

child_process.spawn's Error: spawn ENOENT was caused by a missing ImageMagick binary.

[Node.js] Module 'commander.js' for Easy Command Line Argument Handling

A quick pointer to commander.js, a handy Node.js module for CLI argument handling.

[Node.js] Converting CSV to JSON files using CSVTOJSON

A small Node.js snippet that pipes csvtojson between fs read and write streams to turn a CSV file into a JSON file.

[Node.js] log-timestamp: Adding Timestamps to console.log and console.error Output

Introducing log-timestamp, a Node.js module that prepends timestamps to console.log and console.error output.

[Node.js] Let's use stable version to avoid MONGOOSE WARNING

Fixing the !!! MONGOOSE WARNING !!! banner in a Node.js app by pinning package.json to a stable Mongoose version.

[Node.js] Sanitize and validate with node-validator

A quick pointer to node-validator, a handy Node.js package for sanitizing and validating input.

How to Update Node.js + NPM + Express All to Latest Versions

Bumping Node.js to the latest LTS and refreshing an Express project's npm deps in one shot with npm-check-updates.

[Node.js] How to Install npm on Mac

Installing npm on a Mac that already has Node.js via nodebrew, and notes on the http URL gotcha.

[Node.js] Installed socketio instead of socket.io and got 'Cannot find module 'socket.io'' error

Mixing up the socketio and socket.io npm packages led to a Cannot find module error — here's the fix.

Error: Cannot find module '../build/Release/sodium' solution [macOS Edition]

Fixing the Node.js 'Cannot find module sodium' error on macOS with Homebrew's libsodium and a fresh npm install.

[Node.js] url-join that nicely combines URLs is convenient

Using url-join to combine URL fragments while handling duplicate slashes and query parameters cleanly.

Use npm-check-updates to update all package.json to latest versions and npm update

Using npm-check-updates (ncu) to rewrite package.json to the latest versions and then npm update.

Distribute an npm CLI Privately via Cloud Storage — A Self-Contained Zip Recipe with Google Drive

A registry is overkill, but handing over the source feels wrong. In that gap sits a humble option: pack your npm CLI into a single self-contained zip and share it through a Google Drive link. Bundle the npm tarball with an INSTALL.md, share it via link or email restriction, and let a human fetch it from a browser and install it. Assembled here as a recipe that actually runs.

Shipping an npm CLI Tool Securely to a Specific Customer — Designing the Build, Sign, and Deliver Pipeline

You want a privately developed npm CLI tool used only inside one customer enterprise, never on the public npm registry. It looks like plain packaging, but in practice you must satisfy three things at once: passing the OS security gates (Gatekeeper and SmartScreen), tamper-evident signing, and a distribution network you can control and audit per customer. Targeting macOS and Windows now with Linux ahead, this post designs build, signing, distribution, and supply-chain hardening as a single pipeline.

How to resolve node-gyp errors during npm install

Four ways I've fixed recurring node-gyp rebuild errors during npm install.

npm json2csv for converting JSON to CSV format is super convenient

A quick guide to converting JSON to CSV with npm json2csv, including sample code and why to avoid custom CSV.

npm Juice Converts CSS in style Tags to Inline Styles - Convenient for HTML Emails

A quick look at npm Juice for inlining CSS in HTML emails, plus an online converter and Gmail notes.

[Node.js] npm package executable files exist as symbolic links in node_modules/.bin

How npm-installed executables end up as symlinks under node_modules/.bin, with a real directory listing.

Why You Should Separate the developers Team from the publish Team in npm Organizations ― A Practical Pattern for Clear Collaborators in Enterprise Settings

The developers team in npm Organizations cannot be deleted and all members are automatically added, making ownership unclear in enterprise settings. This article explains the practical pattern of separating publish teams and setting developers to read-only.

[npm] How to remove packages not in package.json from node_modules

A short memo on using npm prune to remove packages missing from package.json out of node_modules.

Hardening npm Publishing with Trusted Publishing — Tokenless OIDC, Staged Publishing, and PR-Merge Releases

After the 2025-2026 npm supply-chain attacks, publishing with a long-lived token is no longer the default. Authenticate with GitHub Actions OIDC Trusted Publishing so there is no publish secret, make CI capable of only staging a package, and keep live promotion as a separate npm MFA step. Restrict the release Environment to the PR merge ref, and automate even the release PR itself. The result is a multi-boundary defense where repository write access alone cannot produce a live npm package.

Numeral.js for Number Formatting in JavaScript and TypeScript

A brief note on picking Numeral.js for number formatting in JavaScript / TypeScript, with @types/numeral for typings.

Nuxt.js Update Version 2.14.x -> 2.15.x

Steps I ran when updating Nuxt.js from 2.14.x to 2.15.x.

[Node.js] phantom Module's addCookie Method Arguments Changed

phantom 0.7.2 changed addCookie to take a single cookie object, so callers need to be updated.

Reference Information for Shopify API Rate Limits

Reference notes on Shopify API rate limits, shopify-api-node's autoLimit option, and stopcock.

How to Install Shopify CLI and Theme on macOS

Install Shopify CLI and @shopify/theme on macOS via asdf-managed Node.js and npm, skipping Homebrew.

[npm] Use Showdownjs instead of markdown-to-html for converting Markdown to HTML

markdown-to-html has npm audit vulnerabilities, so use Showdownjs for Markdown-to-HTML in Node.js.

Opening a Folder Can Run Malware — A Safe Demo of Developer-Targeted Attacks Disguised as Job Recruiting via VS Code folderOpen and npm Lifecycle Scripts

Attacks that lure developers into running malware-laden repositories under the guise of recruiting or coding tests are on the rise. The steps you take right after git clone (opening the folder in an editor, running npm install) can themselves be the code-execution trigger. I built a demo repository to reproduce that safely on localhost, and here are the design decisions and defenses worth taking away.

Presented 'What We Practice for Continuous npm update' at We Are JavaScripters! @17th #wejs

My talk 'What We Practice for Continuous npm update' at the We Are JavaScripters! @17th meetup.