Envful is a CLI tool that verifies the presence of environment variables. It looks inside your .env file and the host system. You can use it to run any process while ensuring all the variables are set.
Never again waste time debugging your app because of a misconfigured environment.
You can install Envful using NPM, allowing you to run it from your project's scripts.
bash
npm install envful
You can also install directly from crates.io using cargo.
bash
cargo install envful
Envful uses the .env.example file as a manifest for which variables are needed. If your project has a .env.example it already supports envful! 🚀
Check for variables and undeclared variables using check:
bash
envful check
You can also specify a command to run if check is successful using the '--' separator. It will immediately fail if a variable is missing, showing helpful messages.
```bash envful -- echo "I am envful!"
envful -- npm run dev ```
```
USAGE:
envful [OPTIONS]
OPTIONS: -d, --dir
SUBCOMMANDS: check Check if the .env has all required variables and warns if missing help Print this message or the help of the given subcommand(s) ```
Inside your .env.example file, you can declare the variables that your application requires. You can use the triple hash market (###) to add a description to the variable. Add [optional] to a variable for warning instead of failing.
Example:
```bash
DATABASE_URL=postgres://postgres:postgres@localhost:5432/postgres
APP_SECRET= ```