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node_modules/stylelint/lib/rules/block-closing-brace-newline-before/README.md

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+# block-closing-brace-newline-before
+
+Require a newline or disallow whitespace before the closing brace of blocks.
+
+```css
+    a { color: pink;
+    }
+/** ↑
+ * The newline before this brace */
+```
+
+## Options
+
+`string`: `"always"|"always-multi-line"|"never-multi-line"`
+
+### `"always"`
+
+There *must always* be a newline before the closing brace.
+
+The following patterns are considered warnings:
+
+```css
+a { color: pink;}
+```
+
+The following patterns are *not* considered warnings:
+
+```css
+a { color: pink;
+}
+```
+
+```css
+a {
+color: pink;
+}
+```
+
+### `"always-multi-line"`
+
+There *must always* be a newline before the closing brace in multi-line blocks.
+
+The following patterns are considered warnings:
+
+```css
+a {
+color: pink;}
+```
+
+The following patterns are *not* considered warnings:
+
+```css
+a { color: pink; }
+```
+
+```css
+a { color: pink;
+}
+```
+
+### `"never-multi-line"`
+
+There *must never* be whitespace before the closing brace in multi-line blocks.
+
+The following patterns are considered warnings:
+
+```css
+a {
+color: pink; }
+```
+
+The following patterns are *not* considered warnings:
+
+```css
+a { color: pink; }
+```
+
+```css
+a {
+color: pink;}
+```

node_modules/stylelint/lib/rules/block-closing-brace-newline-before/index.js

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+"use strict"
+
+const _ = require("lodash")
+const blockString = require("../../utils/blockString")
+const hasBlock = require("../../utils/hasBlock")
+const hasEmptyBlock = require("../../utils/hasEmptyBlock")
+const isSingleLineString = require("../../utils/isSingleLineString")
+const report = require("../../utils/report")
+const ruleMessages = require("../../utils/ruleMessages")
+const validateOptions = require("../../utils/validateOptions")
+
+const ruleName = "block-closing-brace-newline-before"
+
+const messages = ruleMessages(ruleName, {
+  expectedBefore: "Expected newline before \"}\"",
+  expectedBeforeMultiLine: "Expected newline before \"}\" of a multi-line block",
+  rejectedBeforeMultiLine: "Unexpected whitespace before \"}\" of a multi-line block",
+})
+
+const rule = function (expectation) {
+  return (root, result) => {
+    const validOptions = validateOptions(result, ruleName, {
+      actual: expectation,
+      possible: [
+        "always",
+        "always-multi-line",
+        "never-multi-line",
+      ],
+    })
+    if (!validOptions) {
+      return
+    }
+
+    // Check both kinds of statements: rules and at-rules
+    root.walkRules(check)
+    root.walkAtRules(check)
+
+    function check(statement) {
+      // Return early if blockless or has empty block
+      if (
+        !hasBlock(statement)
+        || hasEmptyBlock(statement)
+      ) {
+        return
+      }
+
+      // Ignore extra semicolon
+      const after = (statement.raws.after || "").replace(/;+/, "")
+      if (after === undefined) {
+        return
+      }
+
+      const blockIsMultiLine = !isSingleLineString(blockString(statement))
+      const statementString = statement.toString()
+
+      let index = statementString.length - 2
+      if (statementString[index - 1] === "\r") {
+        index -= 1
+      }
+
+      // We're really just checking whether a
+      // newline *starts* the block's final space -- between
+      // the last declaration and the closing brace. We can
+      // ignore any other whitespace between them, because that
+      // will be checked by the indentation rule.
+      if (
+        !_.startsWith(after, "\n")
+        && !_.startsWith(after, "\r\n")
+      ) {
+        if (expectation === "always") {
+          complain(messages.expectedBefore)
+        } else if (
+          blockIsMultiLine
+          && expectation === "always-multi-line"
+        ) {
+          complain(messages.expectedBeforeMultiLine)
+        }
+      }
+
+      if (
+        after !== ""
+        && blockIsMultiLine
+        && expectation === "never-multi-line"
+      ) {
+        complain(messages.rejectedBeforeMultiLine)
+      }
+
+      function complain(message) {
+        report({
+          message,
+          result,
+          ruleName,
+          node: statement,
+          index,
+        })
+      }
+    }
+  }
+}
+
+rule.ruleName = ruleName
+rule.messages = messages
+module.exports = rule