wp-gutenberg-block-template/svg.php

<?php
function svg_block_init() {
	if ( ! function_exists( 'register_block_type' ) ) {
		return;
	}

	// remember - for a block defined in a plugin, we will not be using
	// get_template_directory(), etc, it will be the equivalent for plugins.
	$dir = get_template_directory() . '/blocks/svg';
	$uri = get_template_directory_uri() . "/blocks/svg";
	$asset_file = include( get_template_directory() . '/blocks/svg/build/index.asset.php');

	$index_js = 'build/index.js';
	wp_register_script(
		'svg-block-editor',
		"$uri/$index_js",
		$asset_file['dependencies'],
		$asset_file['version']
	);

	$editor_css = 'build/index.css';
	wp_register_style(
		'svg-block-editor',
		"$uri/$editor_css",
		array(),
		filemtime( "$dir/$editor_css" )
	);

	$style_css = 'build/style-index.css';
	wp_register_style(
		'svg-block',
		"$uri/$style_css",
		array(),
		filemtime( "$dir/$style_css" )
	);

	register_block_type( 'room-vw/svg', array(
		'editor_script' => 'svg-block-editor',
		'editor_style'  => 'svg-block-editor',
		'style'         => 'svg-block',
	) );
}
add_action( 'init', 'svg_block_init' );