stylelint/lib/utils/eachDeclarationBlock.js

A mighty, modern CSS linter.

'use strict';

// In order to accommodate nested blocks (postcss-nested),
// we need to run a shallow loop (instead of eachDecl() or eachRule(),
// which loop recursively) and allow each nested block to accumulate
// its own list of properties -- so that a property in a nested rule
// does not conflict with the same property in the parent rule
/**
 * executes a provided function once for each declaration block.
 * @param {Root|Document} root - root element of file.
 * @param {function} cb - Function to execute for each declaration block
 */
module.exports = function(root /*: Object */, cb /* Function */) {
	function each(statement) {
		if (statement.nodes && statement.nodes.length) {
			const decls = statement.nodes.filter((node) => {
				if (node.type === 'decl') {
					return true;
				} else {
					each(node);
				}
			});

			if (decls.length) {
				cb(decls.forEach.bind(decls));
			}
		}
	}

	each(root);
};