astro/dist/actions/actions-file.js

Astro is a modern site builder with web best practices, performance, and DX front-of-mind.

// `es-module-lexer` compiles WebAssembly when this module is evaluated. It is
// deliberately kept out of `actions/utils.js`, which the `astro:actions`
// runtime graph reaches: restricted runtimes (Cloudflare Workers) disallow
// wasm code generation. This module is only loaded by dev/build config code.
// https://github.com/withastro/astro/issues/17906
import * as eslexer from "es-module-lexer/minimal";
/**
* Check whether the Actions config file is present.
*/
export async function isActionsFilePresent(fs, srcDir) {
	await eslexer.init();
	const actionsFile = search(fs, srcDir);
	if (!actionsFile) return false;
	let contents;
	try {
		contents = fs.readFileSync(actionsFile.url, "utf-8");
	} catch {
		return false;
	}
	// Check if `server` export is present.
	// If not, the user may have an empty `actions` file,
	// or may be using the `actions` file for another purpose
	// (possible since actions are non-breaking for v4.X).
	const [, exports] = eslexer.parse(contents, actionsFile.url.pathname);
	for (const exp of exports) {
		if (exp.n === "server") {
			return actionsFile.filename;
		}
	}
	return false;
}
function search(fs, srcDir) {
	const filenames = [
		"actions.mjs",
		"actions.js",
		"actions.mts",
		"actions.ts",
		"actions/index.mjs",
		"actions/index.js",
		"actions/index.mts",
		"actions/index.ts"
	];
	for (const filename of filenames) {
		const url = new URL(filename, srcDir);
		if (fs.existsSync(url)) {
			return {
				filename,
				url
			};
		}
	}
	return undefined;
}