function effect_orphan(rune) {
	if (DEV) {
		const error = new Error(`effect_orphan\n\`${rune}\` can only be used inside an effect (e.g. during component initialisation)\nhttps://svelte.dev/e/effect_orphan`);

		error.name = 'Svelte error';
		throw error;
	} else {
		throw new Error(`https://svelte.dev/e/effect_orphan`);
	}
}
`%rune%` can only be used inside an effect (e.g. during component initialisation)
@param {string} rune
@returns {never}