I am moving an Express app across from CommonJS require syntax to the ES6 module import syntax. This is fine until I try and use dotenv to load my environment variables and every time I try to acce...

I am running vitest runner. Then I see that someone probably vitest is generating from my .ts files some .js files: The error message I get seems to be originating from the uiElementsCreator.test....

Node.js 16.14.2, npm 8.19.2. I am trying to run a simple Node.js script that imports OrbitDB. Here is the script: hello_orbitdb.js // import the package const OrbitDB = require('orbit-db'); Here i...

I have a Node.js project whose modules are imported in the Common.JS way using require. However, the need arose to import a package that is ESM only. One way to use ESM import from in my project wa...

I'm determined to find a way to do this. Here's why: I'm writing tests for .js files which are bundled with webpack for a browser client. I would like to run these tests in nodejs. There is a &quot...

I recently read the following in Kyle Simpson's You Don't Know JS: ES6 "[ES6 modules export] actual bindings (almost like pointers) to the identifiers in your inner module definition." My confusi...

I'd like to make a Javascript file that exports its content (e.g. a class) if it can export (e.g. it has been loaded with <script type="module">) and otherwise, assigns its content...

Let's say you're developing a polyfill and don't want to shim a class if it already exists in the browser. How can this be done in ES6? The following is not valid because exports is not a statement...

I have a problem with my webpack project, so I was trying to import one class to another and instantiate it but suddenly an error appear in my console and my program stopped working, it was this: U...

Is there any performance advantage or disadvantage of using ES modules over CommonJS modules in a nodejs backend project? I'm asking this because I see a lot of people using CJS still even though n...

I am following a tutorial and it says ES modules uses live bindings. It means a feature to support cyclical dependencies. But I don't clearly understand this concept. What does this mean?

Calling setTimeout with setImmediate has unpredicted behaviour if using CommonJS modules. But if you switch to ESM ("type": "module" in package.json), it will always execute set...

My package.json file looks something like this: { ... "main": "index.js", "type": "module", "scripts": { "devStart": "pm2 start ...

I use the flag --experimental-modules when running my Node application in order to use ES6 modules. However when I use this flag the metavariable __dirname is not available. Is there an alternative...

I build a expressJs app by ES6 and I got the below error: (node:4132) ExperimentalWarning: The ESM module loader is experimental. internal/modules/run_main.js:54 internalBinding('errors').trigger...

I updated to nanoid4 and began getting the following error: [ERR_REQUIRE_ESM]: require() of ES Module [...]/node_modules/nanoid/index.js not supported. Instead change the require of index.js in [....

ES6 modules allows us to create a single point of entry like so: // main.js import foo from 'foo'; foo() <script src="scripts/main.js" type="module"></script> foo.js ...

All modern versions of Node need to run packages as modules is "type": "module" in package.json, but I don't see any flags for npm init or yarn init that will add that property....

We're trying to use the new ways of exporting and importing modules for ES6 with Node.js. It's important for us to get the version number from the package.json file. The following code should do th...

I'm new to Gulp and trying to automate some tasks. Here's my environment setup: npm version: 8.1.0, node version 17.0.1, gulp CLI version 2.3.0 and gulp version 4.0.2 And here's my gulpfile.js: // ...

I'm rewriting some JS code on TypeScript and encounter with problems with module import. For example, I want to write my toggleVisiblity function. Here is code: /// <reference path="../../typin...

I'm trying to get webpack to ignore an import, so that its imported by the browser using a native ES6 import statement, not webpack. I'm trying to get ffmpeg.js to import directly as it crashes web...

I'm loading a javascript file using jquery with the usual: // file application.js $.getScript("module.js", function(data, textStatus, jqxhr) { ... }); So far so good. Except that module.js uses ...

I'm trying to write a simple jest test for a 3rd party package were using that only exports an ES module. It's a wrapper around an http server. Here is a test repo I setup (just run yarn &&...

Original question:JavaScript - Does the use of namespace imports have an effect on a module's treeshake-ability? Assume that we are using ES6 module system. According to the docs, when we use an * ...