from-env-with-expand

🕶 from-env 🕶

from-env is helper script that makes environment variables from a local .env-file inside command line statements available.

installation

npm install --save-dev from-env-with-command

usage

.env

VARIABLE1=needs
VARIABLE2=have
VARIABLE3=variables

expansions inside .env

PORT=5000
PROTOCOL=http
HOST=localhost
URL=${PROTOCOL}://${HOST}:${PORT}

package.json (before)

{
    "scripts": {
        "yo": "your-command --that needs --to have --some variables"
    }
}

package.json (after)

{
    "scripts": {
        "yo": "from-env your-command --that %VARIABLE1 --to %VARIABLE2 --some %VARIABLE3"
    }
}

embedded variables replacement

To enable replacing variables that are not standlone:

from-env --embedded-vars your-command --things thing1=%VARIABLE1 thing2=%VARIABLE2 --other $VARIABLE3

or

from-env your-command --things thing1=%VARIABLE1 thing2=%VARIABLE2 --other $VARIABLE3

with

.env

FROM_ENV_EMBEDDED=true

alternative

this also works without any package (also on windows with wsl):

package.json

{
    "scripts": {
        "yo": "from-env your-command --that $(grep VARIABLE1 .env | cut -d '=' -f2) --to $(grep VARIABLE2 .env | cut -d '=' -f2) --some $(grep VARIABLE3 .env | cut -d '=' -f2)"
    }
}