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- 'use strict';
- const _ = require('lodash');
- const report = require('../../utils/report');
- const ruleMessages = require('../../utils/ruleMessages');
- const validateOptions = require('../../utils/validateOptions');
- const ruleName = 'value-list-max-empty-lines';
- const messages = ruleMessages(ruleName, {
- expected: (max) => `Expected no more than ${max} empty ${max === 1 ? 'line' : 'lines'}`,
- });
- function rule(max, options, context) {
- const maxAdjacentNewlines = max + 1;
- return (root, result) => {
- const validOptions = validateOptions(result, ruleName, {
- actual: max,
- possible: _.isNumber,
- });
- if (!validOptions) {
- return;
- }
- const violatedCRLFNewLinesRegex = new RegExp(`(?:\r\n){${maxAdjacentNewlines + 1},}`);
- const violatedLFNewLinesRegex = new RegExp(`\n{${maxAdjacentNewlines + 1},}`);
- const allowedLFNewLinesString = context.fix ? '\n'.repeat(maxAdjacentNewlines) : '';
- const allowedCRLFNewLinesString = context.fix ? '\r\n'.repeat(maxAdjacentNewlines) : '';
- root.walkDecls((decl) => {
- const value = decl.raws.value ? decl.raws.value.raw : decl.value;
- if (context.fix) {
- const newValueString = value
- .replace(new RegExp(violatedLFNewLinesRegex, 'gm'), allowedLFNewLinesString)
- .replace(new RegExp(violatedCRLFNewLinesRegex, 'gm'), allowedCRLFNewLinesString);
- if (decl.raws.value) {
- decl.raws.value.raw = newValueString;
- } else {
- decl.value = newValueString;
- }
- } else if (violatedLFNewLinesRegex.test(value) || violatedCRLFNewLinesRegex.test(value)) {
- report({
- message: messages.expected(max),
- node: decl,
- index: 0,
- result,
- ruleName,
- });
- }
- });
- };
- }
- rule.ruleName = ruleName;
- rule.messages = messages;
- module.exports = rule;
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