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node_modules/stylelint/lib/rules/value-list-max-empty-lines/README.md

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+# value-list-max-empty-lines
+
+Limit the number of adjacent empty lines within value lists.
+
+```css
+a {
+  box-shadow:
+    inset 0 2px 0 #dcffa6,
+                    /* ← */
+    0 2px 5px #000; /* ↑ */
+}                   /* ↑ */
+/**                    ↑
+ *       This empty line */
+```
+
+## Options
+
+`int`: Maximum number of empty lines.
+
+For example, with `0`:
+
+The following patterns are considered warnings:
+
+```css
+a {
+  padding: 10px
+
+    10px
+    10px
+    10px
+}
+```
+
+```css
+a {
+  padding: 
+    10px
+    10px
+    10px
+
+    10px
+}
+```
+
+```css
+a {
+  box-shadow: inset 0 2px 0 #dcffa6,
+
+    0 2px 5px #000;
+}
+```
+
+```css
+a {
+  box-shadow:
+    inset 0 2px 0 #dcffa6,
+
+    0 2px 5px #000;
+}
+```
+
+The following patterns are *not* considered warnings:
+
+```css
+a {
+  padding: 10px 10px 10px 10px
+}
+```
+
+```css
+a {
+  padding: 10px
+    10px
+    10px
+    10px
+}
+```
+
+```css
+a {
+  padding:
+    10px
+    10px
+    10px
+    10px
+}
+```
+
+```css
+a {
+  box-shadow: inset 0 2px 0 #dcffa6, 0 2px 5px #000;
+}
+```
+
+```css
+a {
+  box-shadow: inset 0 2px 0 #dcffa6,
+    0 2px 5px #000;
+}
+```
+
+```css
+a {
+  box-shadow:
+    inset 0 2px 0 #dcffa6,
+    0 2px 5px #000;
+}
+```

node_modules/stylelint/lib/rules/value-list-max-empty-lines/index.js

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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 styleSearch = require("style-search")
+
+const ruleName = "value-list-max-empty-lines"
+
+const messages = ruleMessages(ruleName, {
+  expected: max => `Expected no more than ${max} empty line(s)`,
+})
+
+const rule = function (max) {
+  const maxAdjacentNewlines = max + 1
+
+  return (root, result) => {
+    const validOptions = validateOptions(result, ruleName, {
+      actual: max,
+      possible: _.isNumber,
+    })
+    if (!validOptions) {
+      return
+    }
+
+    root.walkDecls(decl => {
+      const value = decl.value
+      const repeatLFNewLines = _.repeat("\n", maxAdjacentNewlines)
+      const repeatCRLFNewLines = _.repeat("\r\n", maxAdjacentNewlines)
+
+      styleSearch({ source: value, target: "\n" }, match => {
+        if (value.substr(match.startIndex + 1, maxAdjacentNewlines) === repeatLFNewLines || value.substr(match.startIndex + 1, maxAdjacentNewlines * 2) === repeatCRLFNewLines) {
+          // Put index at `\r` if it's CRLF, otherwise leave it at `\n`
+          let index = match.startIndex
+          if (value[index - 1] === "\r") {
+            index -= 1
+          }
+
+          report({
+            message: messages.expected(max),
+            node: decl,
+            index,
+            result,
+            ruleName,
+          })
+        }
+      })
+    })
+  }
+}
+
+rule.ruleName = ruleName
+rule.messages = messages
+module.exports = rule