function props_invalid_value(key) {
	if (DEV) {
		const error = new Error(`props_invalid_value\nCannot do \`bind:${key}={undefined}\` when \`${key}\` has a fallback value\nhttps://svelte.dev/e/props_invalid_value`);

		error.name = 'Svelte error';
		throw error;
	} else {
		throw new Error(`https://svelte.dev/e/props_invalid_value`);
	}
}
Cannot do `bind:%key%={undefined}` when `%key%` has a fallback value
@param {string} key
@returns {never}