function TransitionDirective(node, context) {
	let flags = node.modifiers.includes('global') ? TRANSITION_GLOBAL : 0;
	if (node.intro) flags |= TRANSITION_IN;
	if (node.outro) flags |= TRANSITION_OUT;

	const args = [
		b.literal(flags),
		context.state.node,
		b.thunk(/** @type {Expression} */ (context.visit(parse_directive_name(node.name))))
	];

	if (node.expression) {
		args.push(b.thunk(/** @type {Expression} */ (context.visit(node.expression))));
	}

	// in after_update to ensure it always happens after bind:this
	context.state.after_update.push(b.stmt(b.call('$.transition', ...args)));
}
@param {AST.TransitionDirective} node
@param {ComponentContext} context