Script to automate creating new components in a React application.

create-component.sh

#!/usr/bin/env bash
#
# Create React Component.
#

# Sane defaults.
# -e Exit on error.
# -u Whine on undefined variables.
# -o pipefail Exit main script if pipe process fails.
set -euo pipefail

# Version.
version="1.0.0"

# Print manual.
help() {
	cat <<-EOF >&2
		About:
		        Create React Component v$version by Arthur <arthur@corenzan.com>

		Usage:
		        $0 [options] <components>

		Arguments:
		        <components>           Space separated component names, e.g. Form Input Button.

		Options:
		        --help       -h        Print manual.
		        --directory  -d        Directory where components are located. Will auto detect. Defaults to current directory.
		        --typescript -t        Use TypeScript.
		        --stylesheet -s        Create stylesheet.
	EOF
}

# Check for required arguments.
if ! test $# -ge 1; then
	help
	exit
fi

# Parse arguments.
args=$(getopt -n "$0" -o hd:ts -l help,directory:,typescript,stylesheet -- "$@")

# Bail if parsing failed.
if test $? -ne 0; then
	exit 1
fi

# Put arguments back into $@.
eval set -- "$args"

# Handle arguments.
while :; do
	case "$1" in
		-h|--help)
			help
			exit
			;;
		-d|--directory)
			prefix="$2"
			shift 2
			;;
		-t|--typescript)
			typescript=1
			shift
			;;
		-s|--stylesheet)
			stylesheet=1
			shift
			;;
		--)
			shift
			break
			;;
	esac
done

# Solve directory.
if test -d "${directory=}"; then
	prefix="$directory"
elif test -d "src/components"; then
	prefix="src/components"
elif test -d "components"; then
	prefix="components"
else
	prefix="."
fi

# Batch mode.
if test $# -gt 1; then
	flags=(-d "$prefix")

	if test -n "${typescript=}"; then
		flags+=(-t)
	fi

	if test -n "${stylesheet=}"; then
		flags+=(-s)
	fi

	for component in "$@"; do
		"$0" "${flags[@]}" "$component"
	done

	exit 0
fi

name="$1"
path="$prefix/$name"

# Prevent overwriting.
if test -d "$path"; then
	printf "%s" "$0: component '$name' already exists\n" >&2
	exit 1
fi

# Create component directory.
mkdir "$path"

# Set component file.
file="$path/index.jsx"
if test -n "${typescript=}"; then
	file="$path/index.tsx"
fi

# Use stylesheet.
if test -n "${stylesheet=}"; then
	touch "$path/style.module.css"
	printf "%s\n\n" "import classes from \"./style.module.css\";" >> "$file"
fi

# Use TypeScript.
if test -n "${typescript=}"; then
	printf "type Props = {};\n\n" >> "$file"
	printf "%s\n" "export function $name({}: Props) {" >> "$file"
else
	printf "%s\n" "export function $name() {" >> "$file"
fi

# Write the rest of the component.
cat <<-EOF >> "$file"
	  return (
	    <>$name</>
	  );
	}
EOF