with-env.sh

#! /usr/bin/env bash

# Populate the current shell with environment variables sourced from the .env
# file in the current working directory.
# 
# This script is designed to take advantage of how Yarn assigns the INIT_CWD
# environment variable based on where a package.json script is called from in a
# workspace-enabled project.
# 
# EXAMPLE USAGE:
#   "scripts": {
#     "build": "yarn workspaces run build",
#     "clean": "yarn workspaces run clean",
#     "start": "./opt/with-env.sh node bin/index.js"
#   }

load_env () {
	# Read the current environment variables
	eval "$(export -p)"
	
	set -o allexport
	source "${1:0}" 2> /dev/null
	set +o allexport
}

# The specific file to source depends on if Yarn has set INIT_CWD
load_env "${INIT_CWD:-${PWD}}/.env"

# Execute any commands passed to the script
eval "${@:1}"