### Bracket For accessing properties using bracket notation like `foo[bar]`
function (key, root, originalKey) {
	this.root = root;
	this.key = key;
	//!steal-remove-start
	if (process.env.NODE_ENV !== 'production') {
		this[canSymbol.for("can-stache.originalKey")] = originalKey;
	}
	//!steal-remove-end
}