text: 'use strict';
  
  const beforeBlockString = require('../../utils/beforeBlockString');
  const blockString = require('../../utils/blockString');
  const hasBlock = require('../../utils/hasBlock');
  const hasEmptyBlock = require('../../utils/hasEmptyBlock');
  const optionsMatches = require('../../utils/optionsMatches');
  const report = require('../../utils/report');
  const ruleMessages = require('../../utils/ruleMessages');
  const validateOptions = require('../../utils/validateOptions');
  const whitespaceChecker = require('../../utils/whitespaceChecker');
  const { isRegExp, isString } = require('../../utils/validateTypes');
  
  const ruleName = 'block-opening-brace-space-before';
  
  const messages = ruleMessages(ruleName, {
  	expectedBefore: () => 'Expected single space before "{"',
  	rejectedBefore: () => 'Unexpected whitespace before "{"',
  	expectedBeforeSingleLine: () => 'Expected single space before "{" of a single-line block',
  	rejectedBeforeSingleLine: () => 'Unexpected whitespace before "{" of a single-line block',
  	expectedBeforeMultiLine: () => 'Expected single space before "{" of a multi-line block',
  	rejectedBeforeMultiLine: () => 'Unexpected whitespace before "{" of a multi-line block',
  });
  
  const meta = {
  	url: 'https://stylelint.io/user-guide/rules/list/block-opening-brace-space-before',
  };
  
  /** @type {import('stylelint').Rule} */
  const rule = (primary, secondaryOptions, context) => {
  	const checker = whitespaceChecker('space', primary, messages);
  
  	return (root, result) => {
  		const validOptions = validateOptions(
  			result,
  			ruleName,
  			{
  				actual: primary,
  				possible: [
  					'always',
  					'never',
  					'always-single-line',
  					'never-single-line',
  					'always-multi-line',
  					'never-multi-line',
  				],
  			},
  			{
  				actual: secondaryOptions,
  				possible: {
  					ignoreAtRules: [isString, isRegExp],
  					ignoreSelectors: [isString, isRegExp],
  				},
  				optional: true,
  			},
  		);
  
  		if (!validOptions) {
  			return;
  		}
  
  		// Check both kinds of statements: rules and at-rules
  		root.walkRules(check);
  		root.walkAtRules(check);
  
  		/**
  		 * @param {import('postcss').Rule | import('postcss').AtRule} statement
  		 */
  		function check(statement) {
  			// Return early if blockless or has an empty block
  			if (!hasBlock(statement) || hasEmptyBlock(statement)) {
  				return;
  			}
  
  			// Return early if at-rule is to be ignored
  			if (
  				statement.type === 'atrule' &&
  				optionsMatches(secondaryOptions, 'ignoreAtRules', statement.name)
  			) {
  				return;
  			}
  
  			// Return early if selector is to be ignored
  			if (
  				statement.type === 'rule' &&
  				optionsMatches(secondaryOptions, 'ignoreSelectors', statement.selector)
  			) {
  				return;
  			}
  
  			const source = beforeBlockString(statement);
  			const beforeBraceNoRaw = beforeBlockString(statement, {
  				noRawBefore: true,
  			});
  
  			let index = beforeBraceNoRaw.length - 1;
  
  			if (beforeBraceNoRaw[index - 1] === '\r') {
  				index -= 1;
  			}
  
  			checker.before({
  				source,
  				index: source.length,
  				lineCheckStr: blockString(statement),
  				err: (m) => {
  					if (context.fix) {
  						if (primary.startsWith('always')) {
  							statement.raws.between = ' ';
  
  							return;
  						}
  
  						if (primary.startsWith('never')) {
  							statement.raws.between = '';
  
  							return;
  						}
  					}
  
  					report({
  						message: m,
  						node: statement,
  						index,
  						result,
  						ruleName,
  					});
  				},
  			});
  		}
  	};
  };
  
  rule.ruleName = ruleName;
  rule.messages = messages;
  rule.meta = meta;
  module.exports = rule;
  