gro_plugin_sveltekit_app.ts

import { args_serialize } from '@fuzdev/fuz_util/args.ts';
import { spawn_result_to_message, type SpawnedProcess } from '@fuzdev/fuz_util/process.ts';

import { to_forwarded_args } from './args.ts';
import { find_cli, spawn_cli, spawn_cli_process } from './cli.ts';
import { VITE_CLI } from './constants.ts';
import type { Plugin } from './plugin.ts';
import { TaskError } from './task.ts';

export interface GroPluginSveltekitAppOptions {
	/**
	 * The Vite CLI to use.
	 */
	vite_cli?: string;
}

export const gro_plugin_sveltekit_app = ({
	vite_cli = VITE_CLI
}: GroPluginSveltekitAppOptions = {}): Plugin => {
	let sveltekit_process: SpawnedProcess | undefined = undefined;
	return {
		name: 'gro_plugin_sveltekit_app',
		setup: async ({ dev, watch, log, config }) => {
			const found_vite_cli = await find_cli(vite_cli);
			if (!found_vite_cli)
				throw Error(
					`Failed to find Vite CLI \`${vite_cli}\`, do you need to run \`${config.pm_cli} i\`?`
				);
			if (dev) {
				// `vite dev` in development mode
				if (watch) {
					const serialized_args = ['dev', ...args_serialize(to_forwarded_args(vite_cli))];
					sveltekit_process = await spawn_cli_process(found_vite_cli, serialized_args, log);
				} else {
					log.debug(
						`the SvelteKit app plugin is loaded but will not output anything` +
							' because `dev` is true and `watch` is false'
					);
				}
			} else {
				// `vite build` in production mode
				const serialized_args = ['build', ...args_serialize(to_forwarded_args(vite_cli))];
				const spawned = await spawn_cli(found_vite_cli, serialized_args, log);
				if (!spawned?.ok) {
					throw new TaskError(
						`${vite_cli} build failed: ${
							spawned ? spawn_result_to_message(spawned) : 'unknown error'
						}`
					);
				}
			}
		},
		teardown: async () => {
			if (sveltekit_process) {
				sveltekit_process.child.kill();
				await sveltekit_process.closed;
			}
		}
	};
};