function simpleId(path) {
	      return path.parts.length === 1 && !AST.helpers.scopedId(path) && !path.depth;
	    }
function simpleId(path) {
	      return path.parts.length === 1 && !AST.helpers.scopedId(path) && !path.depth;
	    }
function simpleId ( path ) { return path . parts . length === 1 && ! AST . helpers . scopedId ( path ) && ! path . depth ; }
an ID is simple if it only has one part, and that part is not `..` or `this`.
an ID is simple if it only has one part and that part is not .. or this .