Bash module idea

runtime.bash

#!/usr/bin/env bash

declare -A IMPORTS

# Returns the path of the script of the caller
function relative_path() {
	dirname "${BASH_SOURCE[1]}"
}

# Imports a module
import() {
	# Relative path to module
	local caller_dir=$(dirname "${BASH_SOURCE[1]}")
	local module_path=$(realpath "$caller_dir/$1")
	local module_name=$(basename "${module_path%.*}") # Use the basename as default module_name

	# Check if "as" keyword is used for aliasing
	if [[ $2 == "as" && -n $3 ]]; then
		module_name=$3
	fi

	local caller_script=$(realpath "${BASH_SOURCE[1]}")

	# Create a unique namespace for each module based on its real path
	local namespace="$module_name"

	# Check if this script has already imported this module
	if [[ ${IMPORTS["$caller_script:$module_path"]} == 1 ]]; then
		return
	fi

	# Mark this module as imported by this script
	IMPORTS["$caller_script:$module_path"]=1

	while read -r function_name; do
		eval "
      $namespace.$function_name() {
        source \"$module_path\"
        $function_name \"\$@\"
      }
    "
	done < <(
		source "$module_path"
		compgen -A function
	)
}

# Source the entry-point script
source "$1"