3 const blockString = require("../../utils/blockString");
4 const hasBlock = require("../../utils/hasBlock");
5 const hasEmptyBlock = require("../../utils/hasEmptyBlock");
6 const hasEmptyLine = require("../../utils/hasEmptyLine");
7 const isSingleLineString = require("../../utils/isSingleLineString");
8 const optionsMatches = require("../../utils/optionsMatches");
9 const report = require("../../utils/report");
10 const ruleMessages = require("../../utils/ruleMessages");
11 const validateOptions = require("../../utils/validateOptions");
13 const ruleName = "block-closing-brace-empty-line-before";
15 const messages = ruleMessages(ruleName, {
16 expected: "Expected empty line before closing brace",
17 rejected: "Unexpected empty line before closing brace"
20 const rule = function(expectation, options) {
21 return (root, result) => {
22 const validOptions = validateOptions(
27 possible: ["always-multi-line", "never"]
32 except: ["after-closing-brace"]
41 // Check both kinds of statements: rules and at-rules
42 root.walkRules(check);
43 root.walkAtRules(check);
45 function check(statement) {
46 // Return early if blockless or has empty block
47 if (!hasBlock(statement) || hasEmptyBlock(statement)) {
51 // Get whitespace after ""}", ignoring extra semicolon
52 const before = (statement.raws.after || "").replace(/;+/, "");
53 if (before === undefined) {
58 const statementString = statement.toString();
59 let index = statementString.length - 1;
60 if (statementString[index - 1] === "\r") {
65 const expectEmptyLineBefore = (() => {
66 const childNodeTypes = statement.nodes.map(item => item.type);
68 // Reverse the primary options if `after-closing-brace` is set
70 optionsMatches(options, "except", "after-closing-brace") &&
71 (statement.type === "atrule" && childNodeTypes.indexOf("decl") === -1)
73 return expectation === "never" ? true : false;
76 return expectation === "always-multi-line" &&
77 !isSingleLineString(blockString(statement))
82 // Check for at least one empty line
83 const hasEmptyLineBefore = hasEmptyLine(before);
85 // Return if the expectation is met
86 if (expectEmptyLineBefore === hasEmptyLineBefore) {
90 const message = expectEmptyLineBefore
105 rule.ruleName = ruleName;
106 rule.messages = messages;
107 module.exports = rule;