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node_modules/stylelint/lib/rules/declaration-block-single-line-max-declarations/README.md

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+# declaration-block-single-line-max-declarations
+
+Limit the number of declaration within a single line declaration block.
+
+```css
+a { color: pink; top: 0; }
+/** ↑            ↑
+ * The number of these declarations */
+```
+
+## Options
+
+`int`: Maximum number of declarations allowed.
+
+For example, with `1`:
+
+The following patterns are considered warnings:
+
+```css
+a { color: pink; top: 3px; }
+```
+
+```css
+a,
+b { color: pink; top: 3px; }
+```
+
+The following patterns are *not* considered warnings:
+
+```css
+a { color: pink; }
+```
+
+```css
+a,
+b { color: pink; }
+```
+
+```css
+a {
+  color: pink;
+  top: 3px;
+}
+```

node_modules/stylelint/lib/rules/declaration-block-single-line-max-declarations/index.js

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+"use strict"
+
+const beforeBlockString = require("../../utils/beforeBlockString")
+const blockString = require("../../utils/blockString")
+const isSingleLineString = require("../../utils/isSingleLineString")
+const report = require("../../utils/report")
+const ruleMessages = require("../../utils/ruleMessages")
+const validateOptions = require("../../utils/validateOptions")
+const _ = require("lodash")
+
+const ruleName = "declaration-block-single-line-max-declarations"
+
+const messages = ruleMessages(ruleName, {
+  expected: quantity => `Expected no more than ${quantity} declaration(s)`,
+})
+
+const rule = function (quantity) {
+  return (root, result) => {
+    const validOptions = validateOptions(result, ruleName, {
+      actual: quantity,
+      possible: [_.isNumber],
+    })
+    if (!validOptions) {
+      return
+    }
+
+    root.walkRules(rule => {
+      if (!isSingleLineString(blockString(rule))) {
+        return
+      }
+      if (!rule.nodes) {
+        return
+      }
+
+      const decls = rule.nodes.filter(node => node.type === "decl")
+
+      if (decls.length <= quantity) {
+        return
+      }
+
+      report({
+        message: messages.expected(quantity),
+        node: rule,
+        index: beforeBlockString(rule, { noRawBefore: true }).length,
+        result,
+        ruleName,
+      })
+    })
+  }
+}
+
+rule.ruleName = ruleName
+rule.messages = messages
+module.exports = rule