What is playground_node_import.meta.env?

This repository is a small experimental playground exploring a limitation in Node.js: the inability to set a global variable called import.meta.env across different JavaScript modules. The project demonstrates a specific technical frustration. In modern JavaScript, developers can use import.meta to access metadata about a module. Some tools allow you to attach an env object to this, which is handy for storing environment settings like whether the code is running on a server or a client. The code here shows that when you try to set this shared object in one file, it does not carry over to another file. The included example shows a secondary file successfully reading a value, but the main file crashing because it sees the variable as undefined. This would be useful for JavaScript developers or toolmakers trying to understand how module-level variables work in Node.js, specifically when building tools that need to share environment configurations across files. For example, a developer building a web framework might want to check a simple flag to see if the code is currently running in a browser or on a server. This playground provides a concrete, reproducible example of why that approach currently fails, which is valuable for anyone debugging similar issues or designing a workaround. The project is essentially a bug report or proof-of-concept rather than a functional tool. It does not offer a solution or a library to download, it simply isolates the problem with raw code and terminal output so others can easily see what is happening under the hood.