function isLookaround(node) {
	return (
		node.type === "Assertion" &&
		(node.kind === "lookahead" || node.kind === "lookbehind")
	);
}
Determines whether the given `regexpp` AST node is a lookaround node.
@param {regexpp.Node} node Node.
@returns {boolean} `true` if it is a lookaround node.