@fontoxml/fontoxml-development-tools/src/createLazyLoadedFunction.js

Development tools for Fonto.

import path from 'path';
import { pathToFileURL } from 'url';

/**
 * Factory for a lazy loaded function that lazily imports a module from an absolute path.
 *
 * @param {string} absolutePath The absolute path of the module to be lazily imported.
 *
 * @return {(...args: unknown[]) => Promise<unknown>} The lazy loaded function wrapper.
 */
export default function createLazyLoadedFunction(absolutePath) {
	if (!path.isAbsolute(absolutePath)) {
		throw new Error(
			`"${absolutePath}" should be registered using an absolute path instead of a relative one.`
		);
	}

	return async (...args) => {
		const loadedFunction = (await import(pathToFileURL(absolutePath)))
			.default;
		return loadedFunction(...args);
	};
}