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.

Commands to Enable yarn with asdf

How to enable yarn under asdf-managed Node.js by combining `corepack enable` and `asdf reshim nodejs`.

Managing Multiple Node.js Versions with asdf

Migrating Node.js version management from nvm to asdf-nodejs and juggling latest and LTS.

[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.

Registering New User with Initial Password Using Auth0 API

TypeScript sample of creating an Auth0 user with an initial password generated by the generate-password npm package.

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.

How to check the list of AWS Lambda default environment variables

Listing AWS Lambda's default environment variables via docs and a Node.js process.env dump.

AWS Lambda Sample Code to Delete Specific Files Uploaded to S3

A sample AWS Lambda function that deletes S3 objects whose ContentType is text/html.

Deploying to AWS Lambda with Serverless Framework

Installing Serverless Framework and deploying to AWS Lambda using the aws-nodejs template.

Steps to set up AWS Lambda local development environment [Serverless Framework Edition]

Setting up AWS Lambda local development with serverless-offline and companion plugins.

Upload from AWS Lambda function to S3 [Serverless Framework Edition]

Uploading HTML from an AWS Lambda function to S3, with Serverless Framework handling bucket and IAM setup.

[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.

Managing Multiple Bun Versions with asdf

Notes on managing multiple Bun versions with the asdf-bun plugin on M1 macOS.

Cloudflare Pages Error: Exit with error code: 126 When Specified Node.js Version Is Not Available

Fix Cloudflare Pages `Error: Exit with error code: 126` by pinning .tool-versions to a Node.js version the build image supports.

Day.js Time Zone Support Sample Code: How to Use dayjs.tz()

Day.js timezone plugin sample code covering three ways to call `dayjs.tz()` and how they differ.

How to Deploy cors-anywhere to Heroku

Deploying cors-anywhere to Heroku to run your own CORS proxy.

How to Deploy an Existing Express.js Project to Heroku

Adding a Procfile to an existing Express.js app and deploying it to Heroku.

Deploying Ghost, a Node.js Blog Platform, to Heroku

Getting Ghost running locally and deploying it to Heroku to start a new blog.

Notes for learning dotinstall's "Express Introduction" on Mac right now

Notes on stumbling points when following dotinstall's Express Introduction on Mac.

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.

ESLint Installation and Initial Setup for Express (Node.js) Projects

Installing and configuring ESLint in an Express (Node.js) project, walked through as a PR.

How to obtain Evernote API Developer Token (with sample code)

How to obtain an Evernote Developer Token and list notebooks from Node.js, with a fix for the sample's warning.

[Node.js] How to set up Basic authentication in Express.js

Sample code for adding Basic authentication to Express.js, either app-wide or per route.

[Node.js] Getting Host Name in Express.js

How to read the host name from `request.headers.host` in Express.js.

[Express.js] Solution for Error: Request Entity Too Large

Fixing Express.js `Request Entity Too Large` by raising the bodyParser limit, with three patterns.

[Express.js] Timeout Configuration Changes and Sample Code for Testing

Express.js default timeout, plus sample code for server / request / response setTimeout behavior.

[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.

How to Fix Fastify 'Unsupported Media Type: application/x-www-form-urlencoded'

Fix Fastify's Unsupported Media Type: application/x-www-form-urlencoded by registering fastify-formbody.

How to Set Up Basic Authentication with Firebase Hosting

Set up Basic Authentication for Firebase Hosting by pairing it with Cloud Functions.

Sample Code for Loading Avro Files to BigQuery with Cloud Storage + Cloud Functions

Sample Cloud Functions code that loads Avro files from Cloud Storage into BigQuery.

Determining Country, City, Postal Code, and ASN from IP Address [GeoIP2 + Node.js]

Node.js samples for looking up country, city, postal code, and ASN from an IP with GeoIP2.

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.

How to Add Heroku Buildpacks to Build in Node.js, Ruby on Rails Order

Reordering Heroku buildpacks to Node.js before Ruby so Yarn and Webpacker install cleanly, via app.json and the CLI.

[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.

Steps to create an Ionic PWA and release it to Netlify

Creating an Ionic PWA with the create-stencil ionic-pwa starter and deploying it to Netlify from GitHub.

Getting started with ionic start

The options I chose when creating an Ionic Framework project with ionic start — starter, Cordova, and Ionic Pro SDK.

[Jade] Mixin Naming Conventions

Jade mixins and .jade filenames use hyphen-separated names in the official examples.

[Jade] partial is deprecated

Partials are deprecated in recent Jade — use mixins to modularize templates instead.

[Jade] Getting Both Element and Index with each

In Jade, `each item, index in list` exposes the loop index alongside the element.

[JavaScript] Array.includes vs Array.indexOf Performance Comparison

A performance comparison of Array.includes vs Array.indexOf on jsPerf and across Node.js versions.

[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.

Promise reference articles summary [JavaScript/ECMAScript6]

A personal reading list of reference articles for learning ES2015 Promises in JavaScript and Node.js.

[JavaScript] setTimeout(function(){}, 1) Can Sometimes Result in the Same Time Even When Specifying 1 Millisecond

Even with a 1 ms setTimeout, Date.now() inside the callback can match the caller's value — reproduced in the Node.js REPL.

[JavaScript] Sample Code for Timezone String Validation with moment.tz.zone

Validate timezone strings in JavaScript with Moment Timezone's moment.tz.zone in just a few lines.

[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.

[JavaScript] jsdom memory leak

Fixed an out of memory error in a jsdom scraper by calling window.close().

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

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

About JSONP Security

A memo on JSONP cross-domain security concerns with reference links.

Sample Module Code for Getting Amazon Cognito Access Token with k6 Load Testing Tool

Sample k6 code that gets an Amazon Cognito access token in setup and runs authenticated load tests.

Load Testing Tool k6 --compatibility-mode=base Sample Code

Sample code for running the k6 load testing tool faster with --compatibility-mode=base.

[KeystoneJS] How to Change the Blog Feature URL from /blog

How to change the KeystoneJS blog feature URL from /blog to /news via a set of source diffs.

KeystoneJS Configuration Error: Please provide a `cookie secret` value for session encryption.

Fix the KeystoneJS cookie secret error on Heroku deploy by setting the COOKIE_SECRET env var.

How to Create a Node.js CMS 'KeystoneJS' App and Deploy it to Heroku

Build a KeystoneJS CMS app and deploy it to Heroku with MongoDB and other add-ons.

How to use moment.js and moment-timezone in MongoDB shell

Load moment.js and moment-timezone into the MongoDB shell — with a mongorc.js snippet for automatic loading.

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

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

[Mac] Error During Node.js Installation: Build failed: -> task failed (err #2): {task: uv uv.h -> uv.a}

Fixing a Node.js build failure around uv on macOS by removing osx-gcc-installer and keeping Xcode Command Line Tools.

[MongoDB] Error: failed to connect to [localhost:27017]

How a missing localhost entry in /etc/hosts broke a Node.js MongoDB connection on 27017.

Using MongoDB's findOneAndUpdate with Replica Set Awareness to Reduce Load on Primary DB

Prefixing findOneAndUpdate with a secondaryPreferred findOne to offload reads from the MongoDB primary.

[MongoDB] MongoError: Runner error: Overflow sort stage buffered data usage of x bytes exceeds internal limit of 33554432 bytes

Adding an index on the sort field resolved the Overflow sort stage error in Express + Mongoose.

[MongoDB] $pull and $pullAll for Removing Specific Elements from Array Fields

$pull and $pullAll examples for removing single or multiple elements from a MongoDB Array field.

[MongoDB] How to Fix "sort stage buffered data usage of x bytes exceeds internal limit of 33554432 bytes" Error

Adding a Mongoose schema index on the sort field cleared the sort stage buffered data limit error.

[Mongoose] How to Specify Two or More Different OR Conditions

To combine two or more different OR conditions in Mongoose, wrap the $or clauses inside an explicit $and.

[Mongoose] Using Only createdAt with timestamp options

How to keep only createdAt in Mongoose by implementing it yourself in pre save/update hooks.

[Mongoose] Check if Specific Fields Have Changed with isDirectModified, isModified, modifiedPaths

How Mongoose's isDirectModified, isModified, and modifiedPaths differ when detecting field changes on a document.

[Mongoose] When lean option is enabled, a plain javascript object is returned instead of MongooseDocument

Mongoose's lean option returns plain JS objects, so save, virtuals, and instance methods stop working.

Converting Mongoose documents to JSON and returning response

Use Mongoose's lean() to return documents as a JSON response from Express with res.json.

[Mongoose] Use mongoose.Types.ObjectId.isValid for ObjectId Validation

Validate ObjectId strings in Mongoose with mongoose.Types.ObjectId.isValid.

[Mongoose] Setting validation runValidators: true in update() and findOneAndUpdate()

Turn on validators for Mongoose update() and findOneAndUpdate() with the runValidators: true option.

[Mongoose] Schema.Types.Mixed Requires .markModified Before save

If a Schema.Types.Mixed value won't save, you need to call markModified before save.

[Node.js] Implementing Simple Auto Increment with Mongoose

A simple Mongoose auto increment using findOne + sort to add 1 to the current maximum code.

[Mongoose] You Can Skip Validation with model.save({ validateBeforeSave: false })

From Mongoose 4.2.0 you can skip validation with save({ validateBeforeSave: false }).

[Mongoose] When doing batch processing with stream, setting noCursorTimeout: true option might make you happy

A long-running Mongoose stream batch that stops mid-way is fixed by passing noCursorTimeout: true.

[Mongoose] Trouble with Stream Processing Only Default batchSize When Sorting by Unindexed Field

A Mongoose stream sorted by an unindexed field stops at 1000 docs — cause and workarounds.

[Mongoose][timekeeper] TypeError: Undefined type `FakeDate` at `fieldName`

Calling new mongoose.Schema inside timekeeper.freeze throws a FakeDate TypeError — cause and fix.

[Mongoose] TypeError: Cannot read property 'options' of undefined

An object-typed value in a type: ObjectId field triggers the options undefined TypeError — here's why.

[Mongoose] How to Fix Error: Unable to invalidate a subdocument that has not been added to an array.

The 'unable to invalidate a subdocument' Mongoose error explained via a bad type: ObjectId value.

[Mongoose] How to Fix (node:42286) DeprecationWarning: current URL string parser is deprecated, and will be removed in a future version. To use the new parser, pass option { useNewUrlParser: true } to MongoClient.connect.

Fix the MongoDB URL parser DeprecationWarning by passing useNewUrlParser: true to mongoose.connect.

[Mongoose] How to Fix (node:42424) DeprecationWarning: current Server Discovery and Monitoring engine is deprecated, and will be removed in a future version. To use the new Server Discover and Monitoring engine, pass option { useUnifiedTopology: true } to the MongoClient constructor.

Fix the Server Discovery and Monitoring DeprecationWarning with useUnifiedTopology: true.

[Node.js] Stubbing Mongoose virtual attributes with sinon

Stub Mongoose virtual attributes from tests with sinon.stub plus stub.withArgs.

Using nestjs/bull for Job and Queue Processing in NestJS

References I gathered when adopting nestjs/bull for job and queue processing in a NestJS project.

How to Start HTTP and HTTPS Servers Simultaneously in NestJS

Sample NestJS code that runs HTTP and HTTPS servers side by side via ExpressAdapter with a mkcert cert.

[NestJS] node-redis TLS Support Sample Code

NestJS sample that connects node-redis to Redis over TLS by passing a tls option to createClient.

How to Introduce node-source-map-support to Display .ts File Locations in Stack Traces in NestJS

Using source-map-support (dev only) so NestJS stack traces point at .ts files without breaking Sentry source maps.

Policy to Set NODE_ENV Only to production, development, test

Why I restrict NODE_ENV to just production, development, and test in Node.js apps.

[Node.js] Using node-wkhtmltopdf

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

[Node.js] How to Install Version Management Tool nodebrew on Mac

Installing the nodebrew Node.js version manager on Mac and troubleshooting the errors along the way.

[Node.js] RangeError: Maximum call stack size exceeded

Fixing Maximum call stack size exceeded in async.eachSeries by wrapping with process.nextTick.

[Node.js] Error: bind EADDRINUSE

Recovering from Node.js bind EADDRINUSE by finding the port-hogging process with netstat and killing it.

[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] Checking File Existence

Using fs.stat to check for a view file and redirect via Express when it's missing.

[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 sample code to convert to JSON array

A short Node.js snippet that converts a two-dimensional array into a JSON array.

[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] Comparison of Daemonization and Process Management Tools for Development Environment

Comparing nodemon, node-supervisor, and node-dev by how they restart after the process dies, and why I switched to node-supervisor.

[Node.js] How to Resolve Error: ENFILE: file table overflow, open xxx

Fixing Node.js's ENFILE: file table overflow on macOS by raising the file descriptor limit with launchctl plist files.

[Node.js] RangeError: Maximum call stack size exceeded

Notes on working around Node.js's RangeError: Maximum call stack size exceeded using the --stack-size option.

[Node.js] http.request with [Error: socket hang up] code: 'ECONNRESET'

Fixing Node.js's ECONNRESET socket hang up by switching from the http module to the https module for HTTPS requests.

Node.js consists of two things: a runtime environment and libraries

A note on the Node Beginner's Book framing that Node.js is two things: a V8-based runtime and a bundled library of modules.

[Node.js] JavaScript heap out of memory can be resolved with --max-old-space-size

Working around a Node.js JavaScript heap out of memory in CI by raising --max-old-space-size to 2048 MB.

Collection of articles useful for learning Node.js

A list of Japanese-language articles that looked useful when I was learning Node.js.

[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] Difference between module.exports and exports

A short note on module.exports vs exports in Node.js — when in doubt, use module.exports.

[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][node-csv] Error: Invalid closing quote at line 1; found " " instead of delimiter "\ "

Working around a node-csv Invalid closing quote error caused by stray double quotes in tab-separated input.

[Node.js] gyp ERR! configure error Error: EACCES, mkdir '/Users/name/.node-gyp'

Working around node-gyp's EACCES mkdir '/Users/name/.node-gyp' error with mkdir and chmod.

[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] Getting File Extensions with path.extname

Extracting file extensions with Node.js's path.extname, illustrated with a few short examples.

[Node.js] Reverse Reference Memo

A reverse-reference memo for common Node.js tasks like checking whether a file exists.

[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.

Resolving Node.js Timezone Issues with Environment Variable TZ=utc ~ production: UTC vs development: JST

Aligning production UTC and development JST in Node.js by setting the TZ=utc environment variable.

[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.

[Node.js] How to Install the Version Management Tool nodebrew on Mac

Installing the Node.js version manager nodebrew on Mac, with fixes for build-time issues.

[Node.js] How to Install the Version Management Tool nvm on Mac

A quick memo on installing the Node.js version manager nvm on Mac.

Prototype Development of a PDF to Text Extraction and Image Conversion CLI Tool with Node.js and WASM Libraries

I want to extract text and images from PDFs for use in vectorization for RAG. With this background, I developed a prototype CLI tool that's easy to use with Node.js. The key point is leveraging WebAssembly (Wasm) for use in serverless environments. This article introduces the background of our technology selection and an overview of the implementation.

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.

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.

[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.

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.

How to Fix "You have $NVM_DIR set to "/Users/yourname/.nvm", but that directory does not exist."

Clearing the NVM_DIR environment variable to get past a failing nvm install script.

Update nvm version | nvm バージョンアップデート

Running the official nvm manual upgrade shell script to update nvm itself.

PDXNode Presentation Night July 2017 Participation Report

A recap of PDXNode Presentation Night in July 2017, the Portland Node.js community meetup.

[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.

How to Create AWS Lambda Layers with node_modules and Add Them to Lambda Functions

Build node_modules-bundled Lambda Layers with Docker and the AWS CLI, then attach them to a Lambda function.

Reference Information for Shopify API Rate Limits

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

Shopify Official TypeScript/JavaScript Library @shopify/shopify-api

Discovering Shopify's official TypeScript/JavaScript library @shopify/shopify-api and considering migrating from MONEI/Shopify-api-node.

[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.

How to build a Strapi demo environment

Two quick paths to try Strapi: the Hosted Demo and a local project via `npx create-strapi-app`.

Tokyo Node Academy 15th Session Participation Report #tng15

Notes from Tokyo Node Academy 15th session (#tng15) — io.js, Extensible Web, and more.

[Yeoman] You don't seem to have a generator with the name chrome-extension installed.

Fixing Yeoman's missing-generator error on nvm by switching NODE_PATH together with `nvm use` from a .zshrc helper.