envweb

Tiny app that serves environment variables as a javascript.

Features

Create .env file:

PARAM=VALUE

NO_DEFAULT_VALUE
# COMMENTED

Run the app:

npx envweb

Configure reverse-proxy (optional, nginx example):

location /config.js {
    proxy_pass http://path/to/envweb/;
}

Include generated script (before the main app):

<script src="config.js"></script>

Use in your app:

console.log(CONFIG.PARAM); // Equals to VALUE or can be overriten in the env

If you run the app with --json flag, it will return json instead of script. So you can use it in your app like this:

fetch('config.json')
    .then(response => response.json())
    .then(config => console.log(config.PARAM));

Each argument can be passed as a flag or as a value (e.g. --port 8080 or --port=8080). Arguments have short aliases (e.g. -p 8080)

Parameter	Type	Default	Description
`port`	`string`	`8080`	Port where app is serverd
`file`	`string`	`.env`	Env filename to read
`variable`	`string`	`CONFIG`	Name of variable in global script
`window`	`boolean`	`false`	If variable should be set to window
`compress`	`boolean`	`false`	If script should be one-line
`json`	`boolean`	`false`	Response as json instead of script. (`-v` and `-w` are forbidden)

Contributions are always welcome!