build/lib/treeshaking.ts/nodeOrChildIsBlack
function nodeOrChildIsBlack(node: ts.Node): boolean {
	if (getColor(node) === NodeColor.Black) {
		return true;
	}
	for (const child of node.getChildren()) {
		if (nodeOrChildIsBlack(child)) {
			return true;
		}
	}
	return false;
}