130 lines
3.3 KiB
JavaScript
130 lines
3.3 KiB
JavaScript
'use strict';
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const addEmptyLineAfter = require('../../utils/addEmptyLineAfter');
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const blockString = require('../../utils/blockString');
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const hasBlock = require('../../utils/hasBlock');
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const hasEmptyBlock = require('../../utils/hasEmptyBlock');
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const hasEmptyLine = require('../../utils/hasEmptyLine');
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const isSingleLineString = require('../../utils/isSingleLineString');
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const optionsMatches = require('../../utils/optionsMatches');
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const removeEmptyLinesAfter = require('../../utils/removeEmptyLinesAfter');
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const report = require('../../utils/report');
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const ruleMessages = require('../../utils/ruleMessages');
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const validateOptions = require('../../utils/validateOptions');
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const ruleName = 'block-closing-brace-empty-line-before';
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const messages = ruleMessages(ruleName, {
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expected: 'Expected empty line before closing brace',
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rejected: 'Unexpected empty line before closing brace',
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});
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const meta = {
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url: 'https://stylelint.io/user-guide/rules/block-closing-brace-empty-line-before',
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fixable: true,
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deprecated: true,
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};
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/** @type {import('stylelint').Rule} */
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const rule = (primary, secondaryOptions, context) => {
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return (root, result) => {
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const validOptions = validateOptions(
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result,
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ruleName,
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{
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actual: primary,
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possible: ['always-multi-line', 'never'],
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},
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{
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actual: secondaryOptions,
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possible: {
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except: ['after-closing-brace'],
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},
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optional: true,
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},
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);
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if (!validOptions) {
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return;
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}
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// Check both kinds of statements: rules and at-rules
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root.walkRules(check);
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root.walkAtRules(check);
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/**
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* @param {import('postcss').Rule | import('postcss').AtRule} statement
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*/
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function check(statement) {
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// Return early if blockless or has empty block
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if (!hasBlock(statement) || hasEmptyBlock(statement)) {
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return;
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}
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// Get whitespace after ""}", ignoring extra semicolon
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const before = (statement.raws.after || '').replace(/;+/, '');
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// Calculate index
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const statementString = statement.toString();
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let index = statementString.length - 1;
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if (statementString[index - 1] === '\r') {
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index -= 1;
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}
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// Set expectation
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const expectEmptyLineBefore = (() => {
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const childNodeTypes = statement.nodes.map((item) => item.type);
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// Reverse the primary options if `after-closing-brace` is set
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if (
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optionsMatches(secondaryOptions, 'except', 'after-closing-brace') &&
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statement.type === 'atrule' &&
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!childNodeTypes.includes('decl')
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) {
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return primary === 'never';
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}
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return primary === 'always-multi-line' && !isSingleLineString(blockString(statement));
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})();
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// Check for at least one empty line
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const hasEmptyLineBefore = hasEmptyLine(before);
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// Return if the expectation is met
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if (expectEmptyLineBefore === hasEmptyLineBefore) {
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return;
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}
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if (context.fix) {
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const { newline } = context;
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if (typeof newline !== 'string') return;
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if (expectEmptyLineBefore) {
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addEmptyLineAfter(statement, newline);
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} else {
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removeEmptyLinesAfter(statement, newline);
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}
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return;
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}
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const message = expectEmptyLineBefore ? messages.expected : messages.rejected;
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report({
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message,
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result,
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ruleName,
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node: statement,
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index,
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});
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}
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};
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};
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rule.ruleName = ruleName;
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rule.messages = messages;
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rule.meta = meta;
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module.exports = rule;
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