How to build software using just vanilla JS

The goal here is to export/import modern ES modules.

• Add type="module" in your script tag.
• When using import specify the .js file extension so that the browser can find the file.

JavaScript built-in types can be checked using the typeof operator: boolean, number or bigint, string, symbol or object.

So typeof applied to any of your custom classes will return object. To get the actual class name, check yourInstance.constructor.name.

Your IDE can check your types by checking your JSDoc comments, which allows your IDE to check types, including your own custom types.

If you provide an API, you can even generate .dt.ts files from JavaScript files using JSDoc.

You can use TypeScript type checking in JavaScript projects and even use a jsconfig.json

Define as many <template>s as your need and replace the DOM node by their cloned content.

Instead of running node mycode.js, run node --watch mycode.js