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node_modules/stylelint/lib/rules/media-feature-range-operator-space-before/README.md

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+# media-feature-range-operator-space-before
+
+Require a single space or disallow whitespace before the range operator in media features.
+
+```css
+@media (max-width >= 600px) {}
+/**               ↑
+ * The space before this */
+```
+
+## Options
+
+`string`: `"always"|"never"`
+
+### `"always"`
+
+There *must always* be a single space before the range operator.
+
+The following patterns are considered warnings:
+
+```css
+@media (max-width>=600px) {}
+```
+
+```css
+@media (max-width>= 600px) {}
+```
+
+The following patterns are *not* considered warnings:
+
+```css
+@media (max-width >=600px) {}
+```
+
+```css
+@media (max-width >= 600px) {}
+```
+
+### `"never"`
+
+There *must never* be whitespace before the range operator.
+
+The following patterns are considered warnings:
+
+```css
+@media (max-width >=600px) {}
+```
+
+```css
+@media (max-width >= 600px) {}
+```
+
+The following patterns are *not* considered warnings:
+
+```css
+@media (max-width>=600px) {}
+```
+
+```css
+@media (max-width>= 600px) {}
+```

node_modules/stylelint/lib/rules/media-feature-range-operator-space-before/index.js

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+"use strict"
+
+const atRuleParamIndex = require("../../utils/atRuleParamIndex")
+const report = require("../../utils/report")
+const ruleMessages = require("../../utils/ruleMessages")
+const validateOptions = require("../../utils/validateOptions")
+const whitespaceChecker = require("../../utils/whitespaceChecker")
+const findMediaOperator = require("../findMediaOperator")
+
+const ruleName = "media-feature-range-operator-space-before"
+
+const messages = ruleMessages(ruleName, {
+  expectedBefore: () => "Expected single space before range operator",
+  rejectedBefore: () => "Unexpected whitespace before range operator",
+})
+
+const rule = function (expectation) {
+  const checker = whitespaceChecker("space", expectation, messages)
+  return (root, result) => {
+    const validOptions = validateOptions(result, ruleName, {
+      actual: expectation,
+      possible: [
+        "always",
+        "never",
+      ],
+    })
+    if (!validOptions) {
+      return
+    }
+
+    root.walkAtRules(/^media$/i, atRule => {
+      findMediaOperator(atRule, checkBeforeOperator)
+    })
+
+    function checkBeforeOperator(match, params, node) {
+      // The extra `+ 1` is because the match itself contains
+      // the character before the operator
+      checker.before({
+        source: params,
+        index: match.index + 1,
+        err: m => {
+          report({
+            message: m,
+            node,
+            index: match.index + atRuleParamIndex(node),
+            result,
+            ruleName,
+          })
+        },
+      })
+    }
+  }
+}
+
+rule.ruleName = ruleName
+rule.messages = messages
+module.exports = rule